STD Tuning Engine Pre chamber questions

Pre chamber questions

Pre chamber questions

 
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poleshady
GTA2056V

78
06-05-2013, 12:49 AM #1
Ive tried doing research recently for what to do for the pre chambers, but alot of the threads have been 404'd.
what i understand is that you remove the collar by making a tool, then make a slide hammer with the right threads( i found some random part that will work for this today) then what do you do with the pre chamber? just clean them out or drill bigger holes? is it worth the effort? i already have the engine out and injectors out.

also the crush rings need to be replaced right? anyone have a part number for those or a source?

any links i might have missed would be helpful
thanks.
poleshady
06-05-2013, 12:49 AM #1

Ive tried doing research recently for what to do for the pre chambers, but alot of the threads have been 404'd.
what i understand is that you remove the collar by making a tool, then make a slide hammer with the right threads( i found some random part that will work for this today) then what do you do with the pre chamber? just clean them out or drill bigger holes? is it worth the effort? i already have the engine out and injectors out.

also the crush rings need to be replaced right? anyone have a part number for those or a source?

any links i might have missed would be helpful
thanks.

AlanMcR
mind - blown

400
06-05-2013, 01:03 AM #2
(06-05-2013, 12:49 AM)poleshady Ive tried doing research recently for what to do for the pre chambers, but alot of the threads have been 404'd.
what i understand is that you remove the collar by making a tool, then make a slide hammer with the right threads( i found some random part that will work for this today) then what do you do with the pre chamber? just clean them out or drill bigger holes? is it worth the effort? i already have the engine out and injectors out.

also the crush rings need to be replaced right? anyone have a part number for those or a source?

any links i might have missed would be helpful
thanks.
You might want to start with which engine you are talking about. The prechambers differ.
AlanMcR
06-05-2013, 01:03 AM #2

(06-05-2013, 12:49 AM)poleshady Ive tried doing research recently for what to do for the pre chambers, but alot of the threads have been 404'd.
what i understand is that you remove the collar by making a tool, then make a slide hammer with the right threads( i found some random part that will work for this today) then what do you do with the pre chamber? just clean them out or drill bigger holes? is it worth the effort? i already have the engine out and injectors out.

also the crush rings need to be replaced right? anyone have a part number for those or a source?

any links i might have missed would be helpful
thanks.
You might want to start with which engine you are talking about. The prechambers differ.

poleshady
GTA2056V

78
06-05-2013, 01:17 AM #3
Forgot to me to mention that, it's a 617 from an 85 300d
poleshady
06-05-2013, 01:17 AM #3

Forgot to me to mention that, it's a 617 from an 85 300d

Simpler=Better
PORTED HEAD

2,127
06-05-2013, 07:51 AM #4
You can get the crush washers an return lines for peachparts, buy at least 20 crush washers to have on hand-you never know when you'll need to swap an injector for diagnostics.

The PC burn holes sre typically reamed out, http://www.superturbodiesel.com/std/show...p?tid=2169
This post was last modified: 06-05-2013, 07:55 AM 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
06-05-2013, 07:51 AM #4

You can get the crush washers an return lines for peachparts, buy at least 20 crush washers to have on hand-you never know when you'll need to swap an injector for diagnostics.

The PC burn holes sre typically reamed out, http://www.superturbodiesel.com/std/show...p?tid=2169


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?

stomis
K26-2

31
06-07-2013, 09:54 AM #5
(06-05-2013, 07:51 AM)Simpler=Better You can get the crush washers an return lines for peachparts, buy at least 20 crush washers to have on hand-you never know when you'll need to swap an injector for diagnostics.

The PC burn holes sre typically reamed out, http://www.superturbodiesel.com/std/show...p?tid=2169

Im still yet to find an actual guide on reaming them out other than "Take a carbide cutter on a dremel and ream them open .010"

1986 Olds 442 - Blue/Silver : 383 SBC, AFR 210 Eliminators, Roller Cam, Blueprinted and balance (for real Smile

To come: Gen 1 Isuzu trooper, OM617, sm465, np241, locked toy axles, 33x10.5 KM2s
stomis
06-07-2013, 09:54 AM #5

(06-05-2013, 07:51 AM)Simpler=Better You can get the crush washers an return lines for peachparts, buy at least 20 crush washers to have on hand-you never know when you'll need to swap an injector for diagnostics.

The PC burn holes sre typically reamed out, http://www.superturbodiesel.com/std/show...p?tid=2169

Im still yet to find an actual guide on reaming them out other than "Take a carbide cutter on a dremel and ream them open .010"


1986 Olds 442 - Blue/Silver : 383 SBC, AFR 210 Eliminators, Roller Cam, Blueprinted and balance (for real Smile

To come: Gen 1 Isuzu trooper, OM617, sm465, np241, locked toy axles, 33x10.5 KM2s

poleshady
GTA2056V

78
06-07-2013, 01:53 PM #6
i didnt see that part about suing a dremel, i just assumed you turned them by hand?

how many steps do you need to go to enlarge to holes, or can you just jump to whatever size you want?
This post was last modified: 06-07-2013, 10:41 PM by poleshady.
poleshady
06-07-2013, 01:53 PM #6

i didnt see that part about suing a dremel, i just assumed you turned them by hand?

how many steps do you need to go to enlarge to holes, or can you just jump to whatever size you want?

Simpler=Better
PORTED HEAD

2,127
06-07-2013, 10:17 PM #7
A reamer is a precision tool. A drill bit is really sloppy compared to a reamer, and a dremel is downright caveman. You want a solid carbine straight reamer.
[Image: reamer.JPG]

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
06-07-2013, 10:17 PM #7

A reamer is a precision tool. A drill bit is really sloppy compared to a reamer, and a dremel is downright caveman. You want a solid carbine straight reamer.
[Image: reamer.JPG]


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
06-07-2013, 10:38 PM #8
I got one that is tapered slightly. The way I look at it, the small amount of taper couldn't hurt, if not maybe even help

'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
06-07-2013, 10:38 PM #8

I got one that is tapered slightly. The way I look at it, the small amount of taper couldn't hurt, if not maybe even help


'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         

poleshady
GTA2056V

78
06-07-2013, 10:42 PM #9
(06-07-2013, 10:17 PM)Simpler=Better A reamer is a precision tool. A drill bit is really sloppy compared to a reamer, and a dremel is downright caveman. You want a solid carbine straight reamer.
[Image: reamer.JPG]

so did you do the reaming by hand?
poleshady
06-07-2013, 10:42 PM #9

(06-07-2013, 10:17 PM)Simpler=Better A reamer is a precision tool. A drill bit is really sloppy compared to a reamer, and a dremel is downright caveman. You want a solid carbine straight reamer.
[Image: reamer.JPG]

so did you do the reaming by hand?

OM616
10mm MW

572
06-08-2013, 01:29 PM #10
A reamer is intended to finish a hole, so it will only remove a little at a time, generally no more than .015 inch per side.

For the back ones you will have to go in steps to get them big enough, make sure you follow the angle of each port as they are different. Use a good "cutting fluid" for steal and go slow, if all you have used before is a drill bit, think of going VERY SLOW compared to a drill bit.

I used a cordless drill but I am a machinist so no big deal to me. For a novice I recommend getting a "hand Reamer" (they are tapered) and do them by hand.

There is no "procedure" of do this as only a hand full of us have dared to go against the MB gods and butcher the perfection that only MB can achieve lol..
OM616
06-08-2013, 01:29 PM #10

A reamer is intended to finish a hole, so it will only remove a little at a time, generally no more than .015 inch per side.

For the back ones you will have to go in steps to get them big enough, make sure you follow the angle of each port as they are different. Use a good "cutting fluid" for steal and go slow, if all you have used before is a drill bit, think of going VERY SLOW compared to a drill bit.

I used a cordless drill but I am a machinist so no big deal to me. For a novice I recommend getting a "hand Reamer" (they are tapered) and do them by hand.

There is no "procedure" of do this as only a hand full of us have dared to go against the MB gods and butcher the perfection that only MB can achieve lol..

poleshady
GTA2056V

78
06-08-2013, 02:26 PM #11
well, i couldn't get them all out so unfortunately i dont think its gonna happen on this engine.

i made a slide hammer with a 10 lb weight, and one of the pre chambers would not come out. i was really wailing on it, it broke welds a few times and finally stripped out the threads of the puller.
poleshady
06-08-2013, 02:26 PM #11

well, i couldn't get them all out so unfortunately i dont think its gonna happen on this engine.

i made a slide hammer with a 10 lb weight, and one of the pre chambers would not come out. i was really wailing on it, it broke welds a few times and finally stripped out the threads of the puller.

ronnie
GT2559V

179
06-08-2013, 05:38 PM #12
I just want to clarify that I used a dremal tool to turn a proper reamer. Not just butchered them. Yes one size of carbide burrs was the right size so did use that on the holes it was properly sized for. So no I did not caveman do pc's
ronnie
06-08-2013, 05:38 PM #12

I just want to clarify that I used a dremal tool to turn a proper reamer. Not just butchered them. Yes one size of carbide burrs was the right size so did use that on the holes it was properly sized for. So no I did not caveman do pc's

 
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