stock compression ratio

mustangjl · August 1st, 2008, 06:24 PM

what is the stock compression ratio for a 2002 mustang gt?

00vabchgt · August 1st, 2008, 06:52 PM

9.66:1

PowerShiftz02GT · August 1st, 2008, 08:49 PM

What do you have to do to take this test. i work at a dealership but and i want a mechanic to check mine but if its a big job, then forget because ill have to give them a little bit of money. But what does this process involve?

cliffyk · August 2nd, 2008, 01:01 AM

You cannot directly "test" the compression ratio, it is a physical/mechanical property of an engines design and represents the cylinder/combustion chamber volume at BDC divided by the cylinder/chamber volume at TDC.

It can be sort of inferred from cranking compression values, but not really.

The compression ratio for the '03 GT 4.6L 2V is listed as 9.74:1 in the '03 factory shop manual, I believe the '02s are the same.

August 1st, 2008, 06:24 PM	#1
mustangjl Regular 2002 mustang gt 13.5 @ 106 Join Date: Nov 2007 Location: dawsonville Posts: 266 iTrader: 2 reviews	stock compression ratio what is the stock compression ratio for a 2002 mustang gt? __________________ mods: flowmaster catback,75mm tb,3.73,sct x3,turbo 70mm-10psi,3 core intercooler,injected engineering tune,mph blower cams. 450hp/460tq fastest et 13.3@114 bowties are for little boys

August 1st, 2008, 08:49 PM	#3
PowerShiftz02GT MM Fanatic 2002 Mustang GT Join Date: Nov 2007 Location: Michigan Posts: 4,204 iTrader: 13 reviews	What do you have to do to take this test. i work at a dealership but and i want a mechanic to check mine but if its a big job, then forget because ill have to give them a little bit of money. But what does this process involve? __________________

August 2nd, 2008, 01:01 AM	#4
cliffyk Hardcore Enthusiast Join Date: Feb 2007 Location: Saint Augustine, FL Posts: 1,808 iTrader: 1 reviews	You cannot directly "test" the compression ratio, it is a physical/mechanical property of an engines design and represents the cylinder/combustion chamber volume at BDC divided by the cylinder/chamber volume at TDC. It can be sort of inferred from cranking compression values, but not really. The compression ratio for the '03 GT 4.6L 2V is listed as 9.74:1 in the '03 factory shop manual, I believe the '02s are the same. __________________ -cliff knight- My Mustang 2003 GT, UPR X, 24lb/h injectors, Magnaflow, 180° stat, PP 70mm TB & plenum, DF Commando, Steeda UDPs, Ralco RZ_flywheel, RAM HDX clutch, WX EFX COPs 3.73s, 262 rwHP/305 lb-ft. Flex-fuel: burns gas and rubber...

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