STD Tuning Engine Safe Boost/EGTs for an OM617

Safe Boost/EGTs for an OM617

Safe Boost/EGTs for an OM617

 
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snowbrd84
Naturally-aspirated

23
05-15-2013, 01:37 PM #1
I put an OM617 out of an 85 300sd into my 89 Jeep Wrangler. I just got done installing some new Monark nozzles and I also put in a very nice digital pyro gauge. I tapped the exhaust manifold right in the center in front of the turbo flange. The thing is pretty accurate, when I turn the key on, the pyro gauge almost perfectly reads the ambient outside air temp...

I drove it around and floored on the highway, it would hit upwards of 1100f before i backed off... My boost gauge hits 10psi before the wastegate opens.

So I bought a manual boost controller and mounted it in the cab with the hoses running into the engine bay and connecting to a safety blowoff valve and then back to the turbo and intake. I turned it up a bit and randomely got exactly what I wanted to try out, 14psi boost before the wastegate opens. EGTs are below 1100 too. The ALDA is also removed BTW.

So I was driving it around yesterday testing and I pull up to a traffic light. After sitting for a minute, I notice a lot of white smoke coming out the exhaust. It seemed to be idling fine. I got going again and when I would floor it, it would go, but it seemed like it lost some power... I went home, and parked in my driveway, no smoke, nothing, I couldnt get it to do it again...

What are the same boost limits and EGTs for this engine? And anyone have any clue what may have happened to get that white smoke at idle??

One other note is that after sitting overnight, I start the engine, it fires right up, but then it dies 5 seconds later and it is very very hard to get it started again, must pump the pedal for like 20 seconds cranking. But then once its going, it has no issues.
snowbrd84
05-15-2013, 01:37 PM #1

I put an OM617 out of an 85 300sd into my 89 Jeep Wrangler. I just got done installing some new Monark nozzles and I also put in a very nice digital pyro gauge. I tapped the exhaust manifold right in the center in front of the turbo flange. The thing is pretty accurate, when I turn the key on, the pyro gauge almost perfectly reads the ambient outside air temp...

I drove it around and floored on the highway, it would hit upwards of 1100f before i backed off... My boost gauge hits 10psi before the wastegate opens.

So I bought a manual boost controller and mounted it in the cab with the hoses running into the engine bay and connecting to a safety blowoff valve and then back to the turbo and intake. I turned it up a bit and randomely got exactly what I wanted to try out, 14psi boost before the wastegate opens. EGTs are below 1100 too. The ALDA is also removed BTW.

So I was driving it around yesterday testing and I pull up to a traffic light. After sitting for a minute, I notice a lot of white smoke coming out the exhaust. It seemed to be idling fine. I got going again and when I would floor it, it would go, but it seemed like it lost some power... I went home, and parked in my driveway, no smoke, nothing, I couldnt get it to do it again...

What are the same boost limits and EGTs for this engine? And anyone have any clue what may have happened to get that white smoke at idle??

One other note is that after sitting overnight, I start the engine, it fires right up, but then it dies 5 seconds later and it is very very hard to get it started again, must pump the pedal for like 20 seconds cranking. But then once its going, it has no issues.

Simpler=Better
PORTED HEAD

2,127
05-15-2013, 02:54 PM #2
Your limit for EGT is 1250 unlimited, above that 30 seconds max. I'd say keep it under 1100F is a good way to have a little bit of a safety net. The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car. You're fine at 14, at worst you're only wasting 2psi. Rumor has it that rods bend once you get up to 28psi. Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow. Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak. Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use. At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you
This post was last modified: 05-15-2013, 02:58 PM by Simpler=Better.

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
05-15-2013, 02:54 PM #2

Your limit for EGT is 1250 unlimited, above that 30 seconds max. I'd say keep it under 1100F is a good way to have a little bit of a safety net. The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car. You're fine at 14, at worst you're only wasting 2psi. Rumor has it that rods bend once you get up to 28psi. Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow. Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak. Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use. At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

MFSuper90
Budget Builder

1,533
05-15-2013, 09:21 PM #3
(05-15-2013, 02:54 PM)Simpler=Better Your limit for EGT is 1250 unlimited, above that 30 seconds max. I'd say keep it under 1100F is a good way to have a little bit of a safety net. The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car. You're fine at 14, at worst you're only wasting 2psi. Rumor has it that rods bend once you get up to 28psi. Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow. Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak. Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use. At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you

I never bent a rod....
I let off at 1000F. Post turbo Confused
but it'll only get that high if i limit boost to 12psi. EGT's slow wayy down at 15-17 psi.

'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         
MFSuper90
05-15-2013, 09:21 PM #3

(05-15-2013, 02:54 PM)Simpler=Better Your limit for EGT is 1250 unlimited, above that 30 seconds max. I'd say keep it under 1100F is a good way to have a little bit of a safety net. The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car. You're fine at 14, at worst you're only wasting 2psi. Rumor has it that rods bend once you get up to 28psi. Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow. Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak. Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use. At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you

I never bent a rod....
I let off at 1000F. Post turbo Confused
but it'll only get that high if i limit boost to 12psi. EGT's slow wayy down at 15-17 psi.


'82 300D -3" straight pipe, ALDA deleted, 3in1 glowshift gauge, HX30, egr-less manifold, A/W intercooler Big Grin
'14 Ram 6.7l cummins -G56 handshaker, wishing it was deleted         

raysorenson
Superturbo

1,162
05-16-2013, 01:46 PM #4
Re: white smoke and stalling, check lift pump pressure, verify fuel filters aren't clogged.
raysorenson
05-16-2013, 01:46 PM #4

Re: white smoke and stalling, check lift pump pressure, verify fuel filters aren't clogged.

Austincarnut
Holset

298
04-21-2017, 09:05 PM #5
(05-15-2013, 09:21 PM)MFSuper90
(05-15-2013, 02:54 PM)Simpler=Better Your limit for EGT is 1250 unlimited, above that 30 seconds max.  I'd say keep it under 1100F is a good way to have a little bit of a safety net.  The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car.  You're fine at 14, at worst you're only wasting 2psi.  Rumor has it that rods bend once you get up to 28psi.  Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow.  Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak.  Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use.  At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you

I never bent a rod....
I let off at 1000F. Post turbo Confused
but it'll only get that high if i limit boost to 12psi. EGT's slow wayy down at 15-17 psi.
how do you regulate boost pressure?
Austincarnut
04-21-2017, 09:05 PM #5

(05-15-2013, 09:21 PM)MFSuper90
(05-15-2013, 02:54 PM)Simpler=Better Your limit for EGT is 1250 unlimited, above that 30 seconds max.  I'd say keep it under 1100F is a good way to have a little bit of a safety net.  The digital gauges are cool, on hot summer days my exhaust would never cool below 180* in the parking lot at work Big Grin

No ALDA boost requirement is estimated at 12-14psi, it depends on the car.  You're fine at 14, at worst you're only wasting 2psi.  Rumor has it that rods bend once you get up to 28psi.  Remember, the static compresson on this beast is 22.5:1

No idea on the smoke.

For the hard starts you're getting air in the lines somehow.  Install tygon(mcmastercarr.com) or lawnmower clear fuel lines up near the IP to help you find the air leak.  Some people have had luck with the cheapo hardware store vinyl tubing, it's up to you what to use.  At $1/foot Tygon isn't bad at all-plus that gives you an excuse to buy methanol nozzles from mcmaster

swing by balamer later this summer, I have a stash of parts I would love to sell you

I never bent a rod....
I let off at 1000F. Post turbo Confused
but it'll only get that high if i limit boost to 12psi. EGT's slow wayy down at 15-17 psi.
how do you regulate boost pressure?

R-3350
Dreaming of compounds

182
04-22-2017, 01:55 AM #6
at around over two BAR (~30psi) WITH FUELING TO MATCH the rods will let go. i have run over 30 on my engine briefly due to waste gate plumbing issues however with the stock mw pump you cant push enough fuel to use more than ~14 psi of boost. there is noticeably less power over 14 psi on my car with a maxed out stock pump. as for the egt limits the rule of thumb of 1250*F is actually based off of direct injected cummins engines. stock Mercedes recommends a continuous turbine inlet temp of less than 1450*F. that being said the cooler you can run the better it is for your engine.
R-3350
04-22-2017, 01:55 AM #6

at around over two BAR (~30psi) WITH FUELING TO MATCH the rods will let go. i have run over 30 on my engine briefly due to waste gate plumbing issues however with the stock mw pump you cant push enough fuel to use more than ~14 psi of boost. there is noticeably less power over 14 psi on my car with a maxed out stock pump. as for the egt limits the rule of thumb of 1250*F is actually based off of direct injected cummins engines. stock Mercedes recommends a continuous turbine inlet temp of less than 1450*F. that being said the cooler you can run the better it is for your engine.

Keino
GT2256V

151
04-22-2017, 03:59 AM #7
Im wondering where this idea of boost over 2 bar is dangerous.

Im using a 7.5mm dieselmeken pump set at around 140cc and a borgwarner s200g that boosts 2.5 bar (~36 psi)
I dont have any egt gauge so no clue what the egt's are.
Just wanted to say that my rods are not bent  (yet???) after more than 2 years of daily driving  Smile
Keino
04-22-2017, 03:59 AM #7

Im wondering where this idea of boost over 2 bar is dangerous.

Im using a 7.5mm dieselmeken pump set at around 140cc and a borgwarner s200g that boosts 2.5 bar (~36 psi)
I dont have any egt gauge so no clue what the egt's are.
Just wanted to say that my rods are not bent  (yet???) after more than 2 years of daily driving  Smile

led-panzer
Holset

541
04-22-2017, 09:48 AM #8
We've heard that figure for years but I haven't seen anyone actually bend a rod from high boost.

1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake
led-panzer
04-22-2017, 09:48 AM #8

We've heard that figure for years but I haven't seen anyone actually bend a rod from high boost.


1984 300D 4-speed ~200,000 miles
7.5mm M-pump, GT3582 turbo, F-Tune Performance intake/exhaust manifolds, A/A intercooler, 315 nozzles, Enlarged prechambers, Bosch 044 feed pump, Custom lightweight flywheel with 240mm clutch, Lowered, 17" AMG rims - 300 hp OM617 project
1985 300D 280,000 miles RIP
2001 F350 7.3 DP tuner, 4"exhaust, S&B intake

barrote
Superturbo

1,627
04-22-2017, 12:34 PM #9
A stupid question, how does a bent rod looks like?
I can't see how a engine can bent the rods ... i have seen them sticking out broken not bent....

FD,
Powered by tractor fuel
barrote
04-22-2017, 12:34 PM #9

A stupid question, how does a bent rod looks like?
I can't see how a engine can bent the rods ... i have seen them sticking out broken not bent....


FD,
Powered by tractor fuel

NZScott
HX30W 73/44mm

398
04-23-2017, 02:11 AM #10
Yes well I've learnt boost is a very "fluid" measurement, how efficient is the turbo, how efficient is the intercooler (if there is one), fuel/air ratio, EGTs, time spent at those conditions, etc all plays into it


1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




NZScott
04-23-2017, 02:11 AM #10

Yes well I've learnt boost is a very "fluid" measurement, how efficient is the turbo, how efficient is the intercooler (if there is one), fuel/air ratio, EGTs, time spent at those conditions, etc all plays into it



1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




R-3350
Dreaming of compounds

182
04-23-2017, 08:12 AM #11
i have seen at least two people who have blown engines with too much boost. mind you i wouldn't call it too much boost as much as too much power for the rods. 2 bar of boost from an efficient turbo at low rpm with all the fuel you can burn with it to match may cause failure. but so can over revving the engine. the pistons reach 25 meters per second peak velocity at 5000 rpm in a 617 with the stroke of 92.4mm and R/S ratio of 1.61. 25 mps is the rule of thumb for maximum rpm for longevity.
R-3350
04-23-2017, 08:12 AM #11

i have seen at least two people who have blown engines with too much boost. mind you i wouldn't call it too much boost as much as too much power for the rods. 2 bar of boost from an efficient turbo at low rpm with all the fuel you can burn with it to match may cause failure. but so can over revving the engine. the pistons reach 25 meters per second peak velocity at 5000 rpm in a 617 with the stroke of 92.4mm and R/S ratio of 1.61. 25 mps is the rule of thumb for maximum rpm for longevity.

Keino
GT2256V

151
04-28-2017, 02:35 PM #12
About yesterday.....

Going uphill, overtaking another car accelerating from 70 mph to about 100-105 mph Boosting **More** than 36 psi ( gauge only measures 36)

Result?

Blown headgasket!    Will be taking a closer look tomorrow. Pics will be posted.

Rolleyes
Keino
04-28-2017, 02:35 PM #12

About yesterday.....

Going uphill, overtaking another car accelerating from 70 mph to about 100-105 mph Boosting **More** than 36 psi ( gauge only measures 36)

Result?

Blown headgasket!    Will be taking a closer look tomorrow. Pics will be posted.

Rolleyes

Evenglass
GT2256V

149
04-28-2017, 04:35 PM #13
(04-28-2017, 02:35 PM)Keino About yesterday.....

Going uphill, overtaking another car accelerating from 70 mph to about 100-105 mph Boosting **More** than 36 psi ( gauge only measures 36)

Result?

Blown headgasket!    Will be taking a closer look tomorrow. Pics will be posted.

Rolleyes
Time for studs! I'm studding mine now and will set my wastegate at 28psi.
Evenglass
04-28-2017, 04:35 PM #13

(04-28-2017, 02:35 PM)Keino About yesterday.....

Going uphill, overtaking another car accelerating from 70 mph to about 100-105 mph Boosting **More** than 36 psi ( gauge only measures 36)

Result?

Blown headgasket!    Will be taking a closer look tomorrow. Pics will be posted.

Rolleyes
Time for studs! I'm studding mine now and will set my wastegate at 28psi.

scrubs
GTA2056V

92
04-28-2017, 09:28 PM #14
You tube
"Diesel dyno complications"
Too much boost n fuel
scrubs
04-28-2017, 09:28 PM #14

You tube
"Diesel dyno complications"
Too much boost n fuel

Keino
GT2256V

151
04-29-2017, 01:31 PM #15
Alright, so the head has been pulled.

[Image: 2nq4ehi.jpg]

After head was removed it was clear that cyl #3 was the one combusting water.

[Image: 2jcfvye.jpg]


And the reason where/why the headgasket broke has been identified aswell.

[Image: v9jb6.jpg]



So I got this bigass hole in my wastegate! Looks almost as it has melted.

[Image: 154btxi.jpg]

Im not gonna say too much before I have started the engine with a new headgasket and run it.
But it looks like nothing has been damaged except the gasket itself.

So going uphill at 100-105 mph around 3500 rpm with 140-150cc fuel and no boost restriction. Without doubt I have been going 43psi +  the rest is just to fantasise about.

Should this engine run like it did before this incident the cred goes to the engineers in Germany a long time ago.

Will update when I know more.



In the meantime I got some stuff to clean from all the radiator fluid that was spray all over the enginebay.


[Image: 2ewegqv.jpg]
Keino
04-29-2017, 01:31 PM #15

Alright, so the head has been pulled.

[Image: 2nq4ehi.jpg]

After head was removed it was clear that cyl #3 was the one combusting water.

[Image: 2jcfvye.jpg]


And the reason where/why the headgasket broke has been identified aswell.

[Image: v9jb6.jpg]



So I got this bigass hole in my wastegate! Looks almost as it has melted.

[Image: 154btxi.jpg]

Im not gonna say too much before I have started the engine with a new headgasket and run it.
But it looks like nothing has been damaged except the gasket itself.

So going uphill at 100-105 mph around 3500 rpm with 140-150cc fuel and no boost restriction. Without doubt I have been going 43psi +  the rest is just to fantasise about.

Should this engine run like it did before this incident the cred goes to the engineers in Germany a long time ago.

Will update when I know more.



In the meantime I got some stuff to clean from all the radiator fluid that was spray all over the enginebay.


[Image: 2ewegqv.jpg]

awsrock
300SDL / HX30 / 90cc

179
04-29-2017, 04:20 PM #16
For what it's worth, my same turbo came with a bad actuator. No hole though. I am just using a crappy eBay one at the moment.
awsrock
04-29-2017, 04:20 PM #16

For what it's worth, my same turbo came with a bad actuator. No hole though. I am just using a crappy eBay one at the moment.

NZScott
HX30W 73/44mm

398
04-29-2017, 09:17 PM #17
Going for a copper gasket or a stock one again?

Yanks love putting ARP studs in everything but still don't see why our engines need them


1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




NZScott
04-29-2017, 09:17 PM #17

Going for a copper gasket or a stock one again?

Yanks love putting ARP studs in everything but still don't see why our engines need them



1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




R-3350
Dreaming of compounds

182
04-29-2017, 10:10 PM #18
way i see it is for the price its cheap insurance. i am looking at new rods, modified pistons, copper HG, and studs for the head and mains. all this seems extreme however i now have a goal of over 500 hp at the crank and being able to rev over 6K all while maintaining some kind of reliability. theres a lot more i have planned to do including multiple redundant cooling systems and aero work on the body. while these engines are built amazingly tough they to fail sooner with much more power going through them and i want something that still can be daily driven without worrying about breaking it while being face meltingly fast.
R-3350
04-29-2017, 10:10 PM #18

way i see it is for the price its cheap insurance. i am looking at new rods, modified pistons, copper HG, and studs for the head and mains. all this seems extreme however i now have a goal of over 500 hp at the crank and being able to rev over 6K all while maintaining some kind of reliability. theres a lot more i have planned to do including multiple redundant cooling systems and aero work on the body. while these engines are built amazingly tough they to fail sooner with much more power going through them and i want something that still can be daily driven without worrying about breaking it while being face meltingly fast.

Keino
GT2256V

151
04-30-2017, 03:40 PM #19
I will be using a standard headgasket.
I am convinced I have a solid and safe setup. (However no boost restriction would kill every single engine out there Big Grin )  
New wastegate has been ordered. I still need to find out why this one broke however.
Hopefully I will be able to start the engine tomorrow.

Updates are to come.
Keino
04-30-2017, 03:40 PM #19

I will be using a standard headgasket.
I am convinced I have a solid and safe setup. (However no boost restriction would kill every single engine out there Big Grin )  
New wastegate has been ordered. I still need to find out why this one broke however.
Hopefully I will be able to start the engine tomorrow.

Updates are to come.

Simpler=Better
PORTED HEAD

2,127
05-01-2017, 09:20 AM #20
Do you have an exhaust pressure gauge? They're easy to install

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
05-01-2017, 09:20 AM #20

Do you have an exhaust pressure gauge? They're easy to install


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

Keino
GT2256V

151
05-02-2017, 10:47 AM #21
(05-01-2017, 09:20 AM)Simpler=Better Do you have an exhaust pressure gauge? They're easy to install

Hi.
No I don't.  Thats not the same as an EGT gauge?

Started the engine and it seems to run well!   Rolleyes
Keino
05-02-2017, 10:47 AM #21

(05-01-2017, 09:20 AM)Simpler=Better Do you have an exhaust pressure gauge? They're easy to install

Hi.
No I don't.  Thats not the same as an EGT gauge?

Started the engine and it seems to run well!   Rolleyes

Austincarnut
Holset

298
05-02-2017, 06:18 PM #22
(04-30-2017, 03:40 PM)Keino I will be using a standard headgasket.
I am convinced I have a solid and safe setup. (However no boost restriction would kill every single engine out there Big Grin )  
New wastegate has been ordered. I still need to find out why this one broke however.
Hopefully I will be able to start the engine tomorrow.

Updates are to come.

What are you using for a waste gate and how high are you setting it?
Austincarnut
05-02-2017, 06:18 PM #22

(04-30-2017, 03:40 PM)Keino I will be using a standard headgasket.
I am convinced I have a solid and safe setup. (However no boost restriction would kill every single engine out there Big Grin )  
New wastegate has been ordered. I still need to find out why this one broke however.
Hopefully I will be able to start the engine tomorrow.

Updates are to come.

What are you using for a waste gate and how high are you setting it?

Keino
GT2256V

151
05-03-2017, 09:58 AM #23
(05-02-2017, 06:18 PM)Austincarnut What are you using for a waste gate and how high are you setting it?

I am using the internal wastegate that the BW turbo came with. (the part that broke, so I ordered a new one)
But in between the wg and compressorhousing im using "dawes device"  very simple to manually adjust just how much boost you want.
The wastegate that broke would open at 1.7 bar (24-25psi) and I wanted some more since I still had some blacksmoke at full throttle


I was thinking of setting it at 2.3 bar for now (33-34psi)
Keino
05-03-2017, 09:58 AM #23

(05-02-2017, 06:18 PM)Austincarnut What are you using for a waste gate and how high are you setting it?

I am using the internal wastegate that the BW turbo came with. (the part that broke, so I ordered a new one)
But in between the wg and compressorhousing im using "dawes device"  very simple to manually adjust just how much boost you want.
The wastegate that broke would open at 1.7 bar (24-25psi) and I wanted some more since I still had some blacksmoke at full throttle


I was thinking of setting it at 2.3 bar for now (33-34psi)

NZScott
HX30W 73/44mm

398
05-04-2017, 01:34 AM #24
Would be nice to know a 617 can be reliable at that boost Wink


1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




NZScott
05-04-2017, 01:34 AM #24

Would be nice to know a 617 can be reliable at that boost Wink



1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




Keino
GT2256V

151
05-04-2017, 09:30 AM #25
(05-04-2017, 01:34 AM)NZScott Would be nice to know a 617 can be reliable at that boost Wink

I totally understand you Wink 
But as I stated earlier I've been boosting 2.4-2.5 bar'ish for like 2 years without any problems.
The engine im using is 617.952 (Original turbodiesel) And has been renovated before usage, head been into shop, valves replaced, new cylinder linings/pistons.

However a broken wastegate changes things.... Dodgy
Keino
05-04-2017, 09:30 AM #25

(05-04-2017, 01:34 AM)NZScott Would be nice to know a 617 can be reliable at that boost Wink

I totally understand you Wink 
But as I stated earlier I've been boosting 2.4-2.5 bar'ish for like 2 years without any problems.
The engine im using is 617.952 (Original turbodiesel) And has been renovated before usage, head been into shop, valves replaced, new cylinder linings/pistons.

However a broken wastegate changes things.... Dodgy

Petar
7.5mm M pump

459
05-04-2017, 03:43 PM #26
@Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.
Petar
05-04-2017, 03:43 PM #26

@Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.

NZScott
HX30W 73/44mm

398
05-05-2017, 12:03 AM #27
(05-04-2017, 09:30 AM)Keino
(05-04-2017, 01:34 AM)NZScott Would be nice to know a 617 can be reliable at that boost Wink

I totally understand you Wink 
But as I stated earlier I've been boosting 2.4-2.5 bar'ish for like 2 years without any problems.
The engine im using is 617.952 (Original turbodiesel) And has been renovated before usage, head been into shop, valves replaced, new cylinder linings/pistons.

However a broken wastegate changes things.... Dodgy

True, forgot that...you even said your NA conversion handled it too (just doesn't like getting hot)


1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




NZScott
05-05-2017, 12:03 AM #27

(05-04-2017, 09:30 AM)Keino
(05-04-2017, 01:34 AM)NZScott Would be nice to know a 617 can be reliable at that boost Wink

I totally understand you Wink 
But as I stated earlier I've been boosting 2.4-2.5 bar'ish for like 2 years without any problems.
The engine im using is 617.952 (Original turbodiesel) And has been renovated before usage, head been into shop, valves replaced, new cylinder linings/pistons.

However a broken wastegate changes things.... Dodgy

True, forgot that...you even said your NA conversion handled it too (just doesn't like getting hot)



1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km

1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




Simpler=Better
PORTED HEAD

2,127
05-05-2017, 06:29 AM #28
(05-04-2017, 03:43 PM)Petar @Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.

I know a guy with 5 NOS OM617 pistons, still in the box, that could be for sale Wink

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
05-05-2017, 06:29 AM #28

(05-04-2017, 03:43 PM)Petar @Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.

I know a guy with 5 NOS OM617 pistons, still in the box, that could be for sale Wink


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

Keino
GT2256V

151
05-05-2017, 09:13 AM #29
(05-05-2017, 12:03 AM)NZScott True, forgot that...you even said your NA conversion handled it too (just doesn't like getting hot)

That is correct. It started evacuating water from the radiator. Boosted around 2 bar with it.

The turbo was smaller tho. And only 6mm pump.


(05-04-2017, 03:43 PM)Petar @Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.

At the time it wasnt hard to get them, Question was only where I would get them cheapest.  Price was aprox 2250 USD
The turbopistons are way more expensive than regular om617 pistons....
Keino
05-05-2017, 09:13 AM #29

(05-05-2017, 12:03 AM)NZScott True, forgot that...you even said your NA conversion handled it too (just doesn't like getting hot)

That is correct. It started evacuating water from the radiator. Boosted around 2 bar with it.

The turbo was smaller tho. And only 6mm pump.


(05-04-2017, 03:43 PM)Petar @Keino You said you have new pistons ? How hard were they to get, and what was the price ? I've heard that they are quite expensive.

At the time it wasnt hard to get them, Question was only where I would get them cheapest.  Price was aprox 2250 USD
The turbopistons are way more expensive than regular om617 pistons....

Keino
GT2256V

151
05-08-2017, 12:10 PM #30
So it seems like it was just the headgasket giving up. Engine runs just as well as it did before this little incident.

Angel

[Image: 25kprlz.jpg]
Keino
05-08-2017, 12:10 PM #30

So it seems like it was just the headgasket giving up. Engine runs just as well as it did before this little incident.

Angel

[Image: 25kprlz.jpg]

 
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