170,160,122,153
this is from a gsr motor stock
i need to do something about this man

 

how many times did you let it crank?
I let mine crank 4 times and I got 180 from all four.

 

Tells you if your motor has gone south..

But really, My compression was 180 180 180 150 or so and I had to get new rings.

If thats the case man, an Acura is selling ITR pistons and rings for 219 + tax. Not jdm, usdm, its still 10:6.1 though.

 

i was 100.200.200.200, but i was broke and kept driving it till it was 100.200.200.100. finaly tore it apart and found cracked ring lands in 1 and 4

 

 

wut shud it be?

 

i had to crank it 8 times per cyl to get it even up this high man it was so bad

 

My car was in the 235-240 range when I tested it. I think thats what a gsr should be at in good condition.

 

I am doing my compression check tomorrow, how many times should I crank it? 5?


[Modified by Halo, 12:24 AM 5/5/2002]

 

I wouldnt rely on a compression test to determine your motor has gone "south." I have a friend who measured 180 across the board and dyno'ed mid 160's.

 

my auto tech teacher says 5, but others say crank 'til it doesn't go anymore. if i crank it 5 times, i'll get mid 200's, if i crank it all the way, it's about 235 across the board. it's probably a bit more consistent if you crank it all the way. or at least you'll feel better about your numbers

 

i cranked it 5 times, and got 220 across the board... i dont think thats too bad considering i got 111,xxx miles on it...

 

yea my motor is in the *******

 

mine was in the 180's last time i did a check.. but i also have 9-1 compression too... that accounts for some of it..

i'd get it taken care of soon.. you dont want it to get worse and have something else go wrong and end up costing you more...

 

uhh.. what are you talking about? a compression test will tell you ALOT about the condition of your engine.

 

I know it will tell you alot, but it will not determine if your motor has gone "south" in some cases. Like I said, Im saying this from a visual experience. My friend had a Gen1 B16a head on a B18c1 block. With that combo, you should expect 10.7+:1 compression. We again, measured 180 across the board. Is it hard to believe? EXTREMELY, thats why we did a compression check on my JDM B20B and it got 208 across, which "equates" to about 9.6.

Is the compression tester tool bad, I really doubt it considering that my numbers for accurate (if not precise).

The guy with the B16/B18C combo had punched out mid 160's on the dyno. His car is very strong uptil this day and almost made 190whp (dont know the results of the current compression). I have no earthly idea how to explain this freak situation, but Im saying this all from truth.


[Modified by Crazy Bovine, 12:10 PM 5/5/2002]

 

dont forget to be at wide open throttle crank till it doesnt go anymore

it will tell a lot about your motor or piece of mind that your doing good

 

WOT was done. We did this test multiple times.

 

in a compression test, what's important is that you have the same compression across all cylinders, not necessarily that you have higher results. as long as you're within spec, if you get approx. the same reading across the board, you can assume that your engine is doing fine. if you get widely varying results, you can assume that your engine will need some work, i.e. engine gone/going "south".

 

I understand where you are coming from for sure. Im stating from my experience that if you read a low number across the board, but they are all consistent, its not necessarily a bad motor

 

Did you remeber to disconnect the injectors? Fuel has a tendency to load up when you are cranking it, during a compression test. This causes your number to go down as you go from one cylinder to another. Just a suggestion...

 

gotcha

 

 

Rings, valves, valve seals or head gasket