Compression Differences?

RacinDuallie

Black Sheep Racing
Joined
Apr 24, 2006
Messages
17,369
Can anyone verify the CR differences between these pistons?

The first 2 pics are of a 1998.5 24V ( excuse the shrapnel impacts :doh: on the piston top- that was from a hurt turbo:bang that got sucked through the system....:evil )

The second 2 pics are of 2004.5 24V- (yet to be modified for service.....:rockwoot: )
 

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Last edited:
Give me piston part numbers (Cummins), I will check :poke:
 
Do you have a engine serial number?

I search with those pn, but without result.
 
Tag for the 1998.5 = Engine # 56441784 :poke: ( date of Mfg. 3-19-98 )

No tag for the 2004.5's :confused:
 
That second set of pistons looks vaugely familiar :rockwoot:
 
Hoss said:
That second set of pistons looks vaugely familiar :rockwoot:

Not done with them yet, modifications coming to improve the burn inside that bowl-further...... with some aids with other sources of injection. I hope will improve the burn with these bowls.:evil :evil :evil
 
Hoss said:
There is a lot that can be done in that area


That is what I hear, any insight? :poke: :poke: :lolly: :stab: :evil


I accept PM's of coarse if you don't care to publically say......:doh:
 
No compression ratios for those pistons in Cummins Quickserve :badidea:
 
partsguy662 said:
Jeff, a simple cc test should tell you all you need to know....;)
:bang Burrett was smashed.... :doh: Have to order up a replacement.... If it wasn't broke I'da never needed to ask.....:rules: :evil
 
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