STD Tuning Engine Whats up with Cut Delivery Valves?

Whats up with Cut Delivery Valves?

Whats up with Cut Delivery Valves?

 
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Poll: Cut Delivery Valves
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Yes; worth it!!!
28.57%
Votes 2
No; not worth the time spent...
71.43%
Votes 5
 
Total 7 vote(s) 100%
Ian White
machinemanjr

22
11-30-2009, 01:03 AM #1
What have you guys noticed? More power/ smoke? Higher EGT's? What exactly does cutting the DV's entail?I have just completed my engine swap in my 81 300SD. It now houses a 1984 model year 617.952. The alda has never been touched (evidence of this being the metal band around plastic cap over adj nut). I want to remove it soon because it isn't near as peppy as my former benz engine (stock with ALDA devirginized 1981 617.951). I need to check my boost on this .952 and report back. Basically, I am looking for good performance while trying not to sacrifice too much mileage-I know people in Hell want icewater .
Ian White
11-30-2009, 01:03 AM #1

What have you guys noticed? More power/ smoke? Higher EGT's? What exactly does cutting the DV's entail?I have just completed my engine swap in my 81 300SD. It now houses a 1984 model year 617.952. The alda has never been touched (evidence of this being the metal band around plastic cap over adj nut). I want to remove it soon because it isn't near as peppy as my former benz engine (stock with ALDA devirginized 1981 617.951). I need to check my boost on this .952 and report back. Basically, I am looking for good performance while trying not to sacrifice too much mileage-I know people in Hell want icewater .

ForcedInduction
Banned

3,628
11-30-2009, 01:15 AM #2
The DV isn't a restriction to flow on the M and MW pump. Cutting the collar results in a very unstable idle, lots of smoke and extremely quick increasing EGTs. It had good power but the EGTs made the power unusable.

http://www.youtube.com/watch?v=HUUxhb4Rd9w
This post was last modified: 11-30-2009, 01:16 AM by ForcedInduction.
ForcedInduction
11-30-2009, 01:15 AM #2

The DV isn't a restriction to flow on the M and MW pump. Cutting the collar results in a very unstable idle, lots of smoke and extremely quick increasing EGTs. It had good power but the EGTs made the power unusable.

http://www.youtube.com/watch?v=HUUxhb4Rd9w

Ian White
machinemanjr

22
11-30-2009, 01:18 AM #3
(11-30-2009, 01:15 AM)ForcedInduction The DV isn't a restriction to flow on the M and MW pump. Cutting the collar results in a very unstable idle, lots of smoke and extremely quick increasing EGTs. It had good power but the EGTs made the power unusable.

http://www.youtube.com/watch?v=HUUxhb4Rd9w

Cutting the collar? I thought to 'cut the dv's' one would remove them and have them Blanchard ground...
Ian White
11-30-2009, 01:18 AM #3

(11-30-2009, 01:15 AM)ForcedInduction The DV isn't a restriction to flow on the M and MW pump. Cutting the collar results in a very unstable idle, lots of smoke and extremely quick increasing EGTs. It had good power but the EGTs made the power unusable.

http://www.youtube.com/watch?v=HUUxhb4Rd9w

Cutting the collar? I thought to 'cut the dv's' one would remove them and have them Blanchard ground...

ForcedInduction
Banned

3,628
11-30-2009, 01:33 AM #4
No, just the collar profile.
Attached Files
Image(s)
       
ForcedInduction
11-30-2009, 01:33 AM #4

No, just the collar profile.

Attached Files
Image(s)
       

Ian White
machinemanjr

22
11-30-2009, 03:31 AM #5
(11-30-2009, 01:33 AM)ForcedInduction No, just the collar profile.

So it is just removing some material from the top of the dv to the collar? Or cutting the diameter of the collar? My picture will explain my question...
How are these DV's removed from the IP? Thread link / picture?
This post was last modified: 11-30-2009, 03:32 AM by Ian White.
Attached Files
Image(s)
   
Ian White
11-30-2009, 03:31 AM #5

(11-30-2009, 01:33 AM)ForcedInduction No, just the collar profile.

So it is just removing some material from the top of the dv to the collar? Or cutting the diameter of the collar? My picture will explain my question...
How are these DV's removed from the IP? Thread link / picture?

Attached Files
Image(s)
   

ForcedInduction
Banned

3,628
11-30-2009, 03:39 AM #6
Yes, Just cutting the collar. The height difference is an optical illusion of the camera.
ForcedInduction
11-30-2009, 03:39 AM #6

Yes, Just cutting the collar. The height difference is an optical illusion of the camera.

Ian White
machinemanjr

22
11-30-2009, 03:41 AM #7
(11-30-2009, 03:39 AM)ForcedInduction Yes, Just cutting the collar. The height difference is an optical illusion of the camera.

I assume the are accessed underneath the inj lines on the IP and the 15 mm nuts? Please excuse my uninformedness
Ian White
11-30-2009, 03:41 AM #7

(11-30-2009, 03:39 AM)ForcedInduction Yes, Just cutting the collar. The height difference is an optical illusion of the camera.

I assume the are accessed underneath the inj lines on the IP and the 15 mm nuts? Please excuse my uninformedness

ForcedInduction
Banned

3,628
11-30-2009, 03:49 AM #8
Yes. Remove the lines, remove the 15mm nuts and they will be directly under. They will need a new copper crush washer as well.
ForcedInduction
11-30-2009, 03:49 AM #8

Yes. Remove the lines, remove the 15mm nuts and they will be directly under. They will need a new copper crush washer as well.

Ian White
machinemanjr

22
11-30-2009, 12:58 PM #9
Okay, looks fairly striaghtforeward. Did you turn yours yourself or did you have someone do it? I am wondering how much to turn off the body...
Ian White
11-30-2009, 12:58 PM #9

Okay, looks fairly striaghtforeward. Did you turn yours yourself or did you have someone do it? I am wondering how much to turn off the body...

ForcedInduction
Banned

3,628
11-30-2009, 04:32 PM #10
Yes, I did them myself using a crude air drill/lathe and a dremel.
ForcedInduction
11-30-2009, 04:32 PM #10

Yes, I did them myself using a crude air drill/lathe and a dremel.

DrewGerhan
If it don't blow black, take it back!

101
11-30-2009, 06:11 PM #11
What about cutting a "channel" in the collar? Would that in theory allow more fuel, but not as much as totally cutting them? Maybe better idle results?

1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE
DrewGerhan
11-30-2009, 06:11 PM #11

What about cutting a "channel" in the collar? Would that in theory allow more fuel, but not as much as totally cutting them? Maybe better idle results?


1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE

ForcedInduction
Banned

3,628
11-30-2009, 06:15 PM #12
I don't know. Give it a try and let us know!
ForcedInduction
11-30-2009, 06:15 PM #12

I don't know. Give it a try and let us know!

DrewGerhan
If it don't blow black, take it back!

101
11-30-2009, 09:16 PM #13
The DVs from the P7100 shown above show that on the brass looking one, the collar is still there but just "thinner". This would allow more fuel and still have a collar to reduced the risk of double injection.

Thats what I could come up with the collar does from reading other threads.

1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE
DrewGerhan
11-30-2009, 09:16 PM #13

The DVs from the P7100 shown above show that on the brass looking one, the collar is still there but just "thinner". This would allow more fuel and still have a collar to reduced the risk of double injection.

Thats what I could come up with the collar does from reading other threads.


1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE

E300TSC
Turbo-Supercharged

321
11-30-2009, 09:28 PM #14
Here's a picture of my modified DV:

[Image: Pb230006.jpg]

Unfortunately, I don't have a stock one to compare it to...
E300TSC
11-30-2009, 09:28 PM #14

Here's a picture of my modified DV:

[Image: Pb230006.jpg]

Unfortunately, I don't have a stock one to compare it to...

DrewGerhan
If it don't blow black, take it back!

101
11-30-2009, 09:30 PM #15
I take it from your user name, that is from a 606?

1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE
DrewGerhan
11-30-2009, 09:30 PM #15

I take it from your user name, that is from a 606?


1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE

E300TSC
Turbo-Supercharged

321
11-30-2009, 09:35 PM #16
Yeah, sorry, I should put my car in my sig...
E300TSC
11-30-2009, 09:35 PM #16

Yeah, sorry, I should put my car in my sig...

Ian White
machinemanjr

22
11-30-2009, 09:57 PM #17
(11-30-2009, 06:11 PM)DrewGerhan What about cutting a "channel" in the collar? Would that in theory allow more fuel, but not as much as totally cutting them? Maybe better idle results?

Is this also known as slotting?
Ian White
11-30-2009, 09:57 PM #17

(11-30-2009, 06:11 PM)DrewGerhan What about cutting a "channel" in the collar? Would that in theory allow more fuel, but not as much as totally cutting them? Maybe better idle results?

Is this also known as slotting?

DrewGerhan
If it don't blow black, take it back!

101
11-30-2009, 10:05 PM #18
I couldn't tell ya. I feel that a Cummins forum might be helpful right now.

1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE
DrewGerhan
11-30-2009, 10:05 PM #18

I couldn't tell ya. I feel that a Cummins forum might be helpful right now.


1981 300SD 230k miles "Gently Modified" Daily Driver

1999 F-250 7.3L Power Stroke 150k miles "The Usual Mods" Tow Rig

1981 300SD 190k miles "Heavily Modified" Big Grin  GONE

Ian White
machinemanjr

22
12-01-2009, 04:41 AM #19
I don't know what to do; I want more power, but I would like to sacrifice as little fuel economy as I could...What mods should I do?
Ian White
12-01-2009, 04:41 AM #19

I don't know what to do; I want more power, but I would like to sacrifice as little fuel economy as I could...What mods should I do?

E300TSC
Turbo-Supercharged

321
12-01-2009, 05:11 AM #20
I'd be looking into a set of Tomnik's "Holly" 6.5mm elements and a VNT for the most bang for the buck.

I'm getting some 7.5's from him and it would probably be a good time to get some other things right now to save on shipping. I could send them to you once I got them here in the States.
E300TSC
12-01-2009, 05:11 AM #20

I'd be looking into a set of Tomnik's "Holly" 6.5mm elements and a VNT for the most bang for the buck.

I'm getting some 7.5's from him and it would probably be a good time to get some other things right now to save on shipping. I could send them to you once I got them here in the States.

Ian White
machinemanjr

22
12-01-2009, 01:08 PM #21
Tell me more about 6.5mm elements please...I am uninformed.
Ian White
12-01-2009, 01:08 PM #21

Tell me more about 6.5mm elements please...I am uninformed.

Ian White
machinemanjr

22
12-02-2009, 02:56 AM #23
(11-30-2009, 09:28 PM)E300TSC Here's a picture of my modified DV:

[Image: Pb230006.jpg]

Unfortunately, I don't have a stock one to compare it to...

Are you still using your cut delivery valves in your OM606? Or did the bad idle get to you Wink...
Ian White
12-02-2009, 02:56 AM #23

(11-30-2009, 09:28 PM)E300TSC Here's a picture of my modified DV:

[Image: Pb230006.jpg]

Unfortunately, I don't have a stock one to compare it to...

Are you still using your cut delivery valves in your OM606? Or did the bad idle get to you Wink...

E300TSC
Turbo-Supercharged

321
12-02-2009, 08:03 AM #24
Ian, I'm afraid I haven't had time to put them in yet... Sad

1998 MB E300 - 194,000 miles. Current/future mods: 7.5mm pump elements, Holset HX40 Turbo feeding Eaton M90 supercharger through custom fabbed intake system. Aeroturbine muffler, scratch-built 4" stainless exhaust. EGR eliminated, ECM recalibrated, modified rack position feedback circuit. Porterfield RS brake pads, Bilstein sport shocks, VDO EGT, oil and boost gauges.

2000 Ford F250 - 150,000 miles. Current/future mods: DP Tuner 3 map chip, scratch-built high flow intake, high output IDM, open circuit fuel system, ball bearing turbo, South Bend full metal clutch, slotted and drilled rotors. Autometer Sport Comp EGT and boost gauges.
E300TSC
12-02-2009, 08:03 AM #24

Ian, I'm afraid I haven't had time to put them in yet... Sad


1998 MB E300 - 194,000 miles. Current/future mods: 7.5mm pump elements, Holset HX40 Turbo feeding Eaton M90 supercharger through custom fabbed intake system. Aeroturbine muffler, scratch-built 4" stainless exhaust. EGR eliminated, ECM recalibrated, modified rack position feedback circuit. Porterfield RS brake pads, Bilstein sport shocks, VDO EGT, oil and boost gauges.

2000 Ford F250 - 150,000 miles. Current/future mods: DP Tuner 3 map chip, scratch-built high flow intake, high output IDM, open circuit fuel system, ball bearing turbo, South Bend full metal clutch, slotted and drilled rotors. Autometer Sport Comp EGT and boost gauges.

DervTuning
Unregistered

47
12-02-2009, 06:45 PM #25
Indeed, larger diameter elements are the way to go for more fuel with proper delivery, as well as being very cost effective (for more power).


(12-02-2009, 08:03 AM)E300TSC Ian, I'm afraid I haven't had time to put them in yet... Sad


Don't worry, we will soon change that for you Big Grin
DervTuning
12-02-2009, 06:45 PM #25

Indeed, larger diameter elements are the way to go for more fuel with proper delivery, as well as being very cost effective (for more power).


(12-02-2009, 08:03 AM)E300TSC Ian, I'm afraid I haven't had time to put them in yet... Sad


Don't worry, we will soon change that for you Big Grin

Ian White
machinemanjr

22
12-02-2009, 09:24 PM #26
(12-02-2009, 06:45 PM)DervTuning Indeed, larger diameter elements are the way to go for more fuel with proper delivery, as well as being very cost effective (for more power).


(12-02-2009, 08:03 AM)E300TSC Ian, I'm afraid I haven't had time to put them in yet... Sad


Don't worry, we will soon change that for you Big Grin

What are you getting at when you say you will change parameters of my quest for power?
Ian White
12-02-2009, 09:24 PM #26

(12-02-2009, 06:45 PM)DervTuning Indeed, larger diameter elements are the way to go for more fuel with proper delivery, as well as being very cost effective (for more power).


(12-02-2009, 08:03 AM)E300TSC Ian, I'm afraid I haven't had time to put them in yet... Sad


Don't worry, we will soon change that for you Big Grin

What are you getting at when you say you will change parameters of my quest for power?

HoleshotHolset
Holset

379
12-07-2009, 01:29 PM #27
(11-30-2009, 01:15 AM)ForcedInduction It had good power but the EGTs made the power unusable.

What were/are you running for a turbo?
Folks around here (short of the Finns) aren't known for running 'big' turbos...

On a OM617/OM606, anything smaller than a Holset HX35 is little, IMHO.

Beers,

Matt

'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten
HoleshotHolset
12-07-2009, 01:29 PM #27

(11-30-2009, 01:15 AM)ForcedInduction It had good power but the EGTs made the power unusable.

What were/are you running for a turbo?
Folks around here (short of the Finns) aren't known for running 'big' turbos...

On a OM617/OM606, anything smaller than a Holset HX35 is little, IMHO.

Beers,

Matt


'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten

ForcedInduction
Banned

3,628
12-07-2009, 09:06 PM #28
That was with the VNT.
ForcedInduction
12-07-2009, 09:06 PM #28

That was with the VNT.

HoleshotHolset
Holset

379
12-08-2009, 02:16 PM #29
(12-07-2009, 09:06 PM)ForcedInduction That was with the VNT.

OK. It takes a lot of flow/boost to burn clean. Was there a haze of gray or a cloud of black? Smile

Beers,

Matt

'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten
HoleshotHolset
12-08-2009, 02:16 PM #29

(12-07-2009, 09:06 PM)ForcedInduction That was with the VNT.

OK. It takes a lot of flow/boost to burn clean. Was there a haze of gray or a cloud of black? Smile

Beers,

Matt


'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten

ForcedInduction
Banned

3,628
12-08-2009, 02:51 PM #30
It was thick gray, not black.
ForcedInduction
12-08-2009, 02:51 PM #30

It was thick gray, not black.

HoleshotHolset
Holset

379
12-21-2009, 03:03 PM #31
(12-08-2009, 02:51 PM)ForcedInduction It was thick gray, not black.

That's not exactly fogging for skeeters level of overfueling - I bet with a little more boost/flow she'd clean right up. EGT's pre-turbo were about 1300° after a hard run...?

Beers,

Matt

'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten
HoleshotHolset
12-21-2009, 03:03 PM #31

(12-08-2009, 02:51 PM)ForcedInduction It was thick gray, not black.

That's not exactly fogging for skeeters level of overfueling - I bet with a little more boost/flow she'd clean right up. EGT's pre-turbo were about 1300° after a hard run...?

Beers,

Matt


'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten

Ian White
machinemanjr

22
12-28-2009, 12:51 AM #32
Would grafting a hx40 clear up the extra fuel?
Ian White
12-28-2009, 12:51 AM #32

Would grafting a hx40 clear up the extra fuel?

ForcedInduction
Banned

3,628
12-28-2009, 10:44 AM #33
For about 500rpm with it spools up at 4000rpm! Big Grin
ForcedInduction
12-28-2009, 10:44 AM #33

For about 500rpm with it spools up at 4000rpm! Big Grin

HoleshotHolset
Holset

379
12-28-2009, 12:35 PM #34
(12-28-2009, 10:44 AM)ForcedInduction For about 500rpm with it spools up at 4000rpm! Big Grin

Yeah - HX40's are lag pigs. Even on 5.9L Cummins engines. There are plenty of other options out there that will flow more and spool faster. Industrial Injection makes some very nice hybrid turbos - spendy, though.

I was VERY impressed with the ball bearing Garrett (GT37R ?) one friend of mine had on his Cummins ISB. The thing spooled nearly instantly and the EGT's stayed cool with a LOT of fuel even though he had a nasty crack in his intercooler. Again, a spendy bugger - but they seem to be very, very durable.

'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten
HoleshotHolset
12-28-2009, 12:35 PM #34

(12-28-2009, 10:44 AM)ForcedInduction For about 500rpm with it spools up at 4000rpm! Big Grin

Yeah - HX40's are lag pigs. Even on 5.9L Cummins engines. There are plenty of other options out there that will flow more and spool faster. Industrial Injection makes some very nice hybrid turbos - spendy, though.

I was VERY impressed with the ball bearing Garrett (GT37R ?) one friend of mine had on his Cummins ISB. The thing spooled nearly instantly and the EGT's stayed cool with a LOT of fuel even though he had a nasty crack in his intercooler. Again, a spendy bugger - but they seem to be very, very durable.


'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten

 
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