12 valve

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Jun 5, 2010 | 03:26 PM

HAYMAFIA

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Diesel Wrench

Joined: Apr 2008

Posts: 634

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From: Tulia, TX

12 valve

are the pistons in the 91 12 valve and a 95 12 valve the same. reason being i have a 91 motor and want to put the 215 stix in it. will it work

Jun 5, 2010 | 04:45 PM

12vcummins96

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From: Pearland Tx

the pistons are the same yes

Jun 5, 2010 | 04:50 PM

HAYMAFIA

Thread Starter

Diesel Wrench

Joined: Apr 2008

Posts: 634

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From: Tulia, TX

so would it be better to swap the head too since the 91 is not intercooled.

Jun 5, 2010 | 08:04 PM

skyjacked84

Diesel Enthusiast

Joined: Jun 2009

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From: clarksville Tn

use boat ones. the dome is bigger so you can do more timming

Jun 6, 2010 | 01:47 PM

94 12valve

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Joined: Jan 2009

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From: Pylesville, Maryland

Quote:

Originally Posted by HAYMAFIA

so would it be better to swap the head too since the 91 is not intercooled.

if the 91 is non initercooled than the pistons are different than the 95's

---AutoMerged DoublePost---

also the head on the non intercooled 91 will need 9mm injector tips

Last edited by 94 12valve; Jun 6, 2010 at 01:47 PM. Reason: Automerged Doublepost

Jun 6, 2010 | 08:05 PM

FastCR

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From: Livingston Montana

Quote:

Originally Posted by 94 12valve

if the 91 is non initercooled than the pistons are different than the 95's

---AutoMerged DoublePost---

also the head on the non intercooled 91 will need 9mm injector tips

Correct from what I know, the non IC pistons and head design are different. you could check on compD to see if theres any gains to be had using the non IC'd pistons.