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  • Protrusion, CR | Cummins Diesel Forum
    The piston protrusion specs I have and what you have posted are for 94 and later emissions controlled automotive apps, these engines have compression ratios ranging from 17 1:1 up to 17 5:1 My Cummins maintenance manual list industrial off road engines with compression ratios from 16 5:1 up to 18:1
  • Piston protrusion below specs | Cummins Diesel Forum
    I measured my piston protrusion on my 12v and my protrusion is way below specs I am at 016 and my other pistons are about the same and or slightly lower
  • Piston protrusion | Cummins Diesel Forum
    Hey I just finished installing my pistons and was going through to check the protrusion and number 1 was in aspect 25 thousands but the rest where all at 35 thousands Im not sure what to do about this should I run the 10 thousands over head gasket or try to fix it The block was cleaned up at
  • Piston protrusion specs,,,Im so confused | Cummins Diesel Forum
    I'm in the process of putting together a 12 valve for a conversion project The block needed a 0 020 overbore and I waited for like four months for some Mahle motorsport performance cast pistons What I don't understand is how much piston protrusion is acceptable before a thicker head gasket is
  • piston protrusion and valve face depth for hamilton cam
    hey, I am in the process of building my p pumped 24 valve and just have gotten my shortblock and cylinder head back from the machine shop and I was measuring piston protrusion and valve face depth to determine if the Hamilton 188 220 would have proper clearance and it looks like I may have some
  • Piston Protrusion Over Spec. What Head Gasket?
    The problem: I measured my piston protrusion over the wrist pin as the manual instructs and had a couple of pistons that are a bit out of spec coming in with a total protrusion of 0 022" The service manual says that min protrusion is 0 006" and max is 0 019" and if you are outside this range then you have a problem
  • Headgasket thickness PTV compression HELP | Cummins Diesel Forum
    For piston protrusion I have tried to find exact figures for my 97 I read one thread that posted 0 024-0 028 protrusion is oem spec Mine being 030- 034 if I went with a 010 over head gasket I'm assuming I would lose a little bit of compression across the board but also increase my PTV
  • Injector Tip Protrusion. . . Risk of hitting pistons?
    Is there any risk of the injector tips being hit by the piston if too thin of seal washers are installed? Are there any other risks? Reason I ask is because upon reassembly of changing my head gasket, I checked the tip protrusion on each injector before putting the head in They were all WAY


















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