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Old 02-16-2020, 06:52 PM   #1
BC847
 
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Question Which piston? (With a twist)

I've got to get new pistons (and a replacement block ).

- I have what I think is a well flowing head (195/220) that includes swirl-inducing reliefs.

Click the image to open in full size.



I've run the head for a good while now with the stock/OEM '93 pistons (narrow/deep bowl?) and the associated 145* nozzle spray angle.

I'm pulling things apart to replace the short-block. Removing the head reveals apparent uniformity of the soot/carbon patterns of each cylinder . .

Click the image to open in full size.



Typical of six . . .

Click the image to open in full size.



I'm assuming this pattern at the nozzle is a result of the swirl (typical) . . .

Click the image to open in full size.



This is typical of the pistons . . .

Click the image to open in full size.



Clearly, there's some fuel impingement going on . . .

Click the image to open in full size.



The engine ran strong and clean.



If I'm not mistaken, the stock/OEM '93 Dodge/Cummins run this piston (someone correct me if I'm wrong, please).

Click the image to open in full size.



I think I might benefit from running this piston, if only to lessen the impingement . .

Click the image to open in full size.



I think it'd be best to raise the C/R a little to offset those reliefs in the head (I've yet to CC them ) That piston I'm looking at won't help that way.



Thoughts? Suggestions? Rude remarks?
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Original owner of a VE fueled 1993 W250 ClubCab.


Silencer ring MIA, str8 pipe with 10" exhaust tip, 250psi boost gauge, ghost-lights 'n truck-nutz. K&N air filter next (if my grades are good enoufh).
 
Old 02-16-2020, 08:28 PM   #2
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If it was me.....

Skirts have coating also.
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Old 02-16-2020, 08:52 PM   #3
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I would go with the non-intercooled 1st Gen piston.
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Infinite Performance

Last edited by Smokem; 02-16-2020 at 08:53 PM.
 
Old 02-16-2020, 09:16 PM   #4
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Quote:
Originally Posted by Smokem View Post
I would go with the non-intercooled 1st Gen piston.
I was hoping you'd comment. Thanks.
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Original owner of a VE fueled 1993 W250 ClubCab.


Silencer ring MIA, str8 pipe with 10" exhaust tip, 250psi boost gauge, ghost-lights 'n truck-nutz. K&N air filter next (if my grades are good enoufh).
 
Old 02-16-2020, 09:18 PM   #5
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Quote:
Originally Posted by BC847 View Post
I was hoping you'd comment. Thanks.
It is the best option for a wider bowl yet retaining the most compression. The industrial 286110 is often used in engines that don't see as much street use.
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Old 05-28-2020, 02:06 PM   #6
BC847
 
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Interestingly, the folks at Mahle Motorsport don't recognize any of those part numbers shown in the piston dimensions .pdf that Smokum sent me.

I've sent a copy of that .pdf to Jason Griffin of Mahle Motorsport. He's at a loss and is forwarding it to his engineer guys to see if they can make anything of it.

Looking for the 286210. (I've a phone call to Infinite Performance as well. Left a message).
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Original owner of a VE fueled 1993 W250 ClubCab.


Silencer ring MIA, str8 pipe with 10" exhaust tip, 250psi boost gauge, ghost-lights 'n truck-nutz. K&N air filter next (if my grades are good enoufh).

Last edited by BC847; 05-28-2020 at 02:09 PM.
 
Old 05-28-2020, 02:13 PM   #7
95cummins5.9
 
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That's a Cummins number is maybe why?
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puzzy, tune it.

I don't own anything stock, from engines to boobies I've modded them all. Life is too short to live with mediocre chit.
 
Old 05-28-2020, 02:41 PM   #8
BC847
 
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Danged if I know. Smokum is sending updated nembers.

But, that makes better sense.
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Original owner of a VE fueled 1993 W250 ClubCab.


Silencer ring MIA, str8 pipe with 10" exhaust tip, 250psi boost gauge, ghost-lights 'n truck-nutz. K&N air filter next (if my grades are good enoufh).
 
Old 05-28-2020, 02:44 PM   #9
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"Hi David,

So this is a old sheet 10+ years. Those are all off-the shelf MAHLE
Aftermarket parts. Call or email them 800-223-9152 custsrv@us.mahle.com,
they should be able to convert the "old" MAHLE part numbers (286xxxx) into
current MAI PN (224-xxxx).
Or they can cross reference the Cummins numbers directly.


Kind regards,

Jason Griffin
MAHLE Engine Components USA, Inc.
MAHLE Motorsports (ENP43S1)"
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Original owner of a VE fueled 1993 W250 ClubCab.


Silencer ring MIA, str8 pipe with 10" exhaust tip, 250psi boost gauge, ghost-lights 'n truck-nutz. K&N air filter next (if my grades are good enoufh).
 
Old 05-28-2020, 03:51 PM   #10
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Quote:
Originally Posted by BC847 View Post

Looking for the 286210. (I've a phone call to Infinite Performance as well. Left a message).
286210 crosses to 224-3525 Mahle/Clevite

Does that answer your question?

The cummins STD bore number 3802100 for the kit with rings and snap rings. Piston number

Last edited by Snedge; 05-28-2020 at 03:52 PM.
 
Old 05-28-2020, 05:07 PM   #11
BC847
 
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Quote:
Originally Posted by Snedge View Post
286210 crosses to 224-3525 Mahle/Clevite

Does that answer your question?
Yes. Thanks.
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