xka24detx

i already tried searching and couldnt find anything. my friend and i were bored so we rented a compression guage from auto zone and got these readings. i remember reading somewhere about good #'s and bad ones, but i cant find them...

My ka24de
1=175
2=180
3=175
4=180

My friends ka24e (i might be off give or take 1 psi, im posting his by memory)
1=160
2=165
3=161
4=167

kandyflip445

Yours is good and your friends isn't too bad either.

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My 240 vBgarage

Munch

off of the 240sx.org faq (http://www.240sx.org/faq/articles/compression_test.htm)

"Compression Pressure kPa (kg/cm2, psi) / RPM
Standard = 1,236 (12.6, 179) / 300
Minimum = 1,040 (10.6, 151) / 300
Difference limit between cylinders = 98 (1.0, 14) / 300"

ledzeppelin240

And those numbers are with WOT@300RPM, don't forget that...

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xka24detx

how do you do it at 3000rpm? the throttle was wide open, we did it the way we knew how to, cut fuel, remove all spark plugs, and crank the engine with the guage in each sparkplug hole

docrice

the specs are specified @ 300 rpm (not 3k), which is the speed your engine *should* crank at with the starter when the motor is warmed up. variation in that speed will cause variation in your numbers.

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xka24detx

lol oops sry, it was late, i mis read it, but yeah throttle was wide open and i think it was at 300