I did a compression test today.. n2o???
10-25-2001, 05:37 AM
#5
Senior Member
Join Date: Dec 2000
Posts: 402
Re: I did a compression test today.. n2o???
Originally posted by wicked1044
results are: 176, 174, 176, 176, 175, 174...
think i can hold some n2o?
results are: 176, 174, 176, 176, 175, 174...
think i can hold some n2o?
10-25-2001, 07:07 AM
#7
Senior Member
Thread Starter
Join Date: Aug 2000
Posts: 2,467
i used the compression tester at my friends shop...
it was a really nice unit. (high quality) it was in two pieces... one went into where the plug goes and the other connects the gauge.
the engine was warm and i did pull the fuse to kill the fuel.
the turned each test 5 times. the gauge built up pressure quickly.
if you want i can get the maker and part # of the unit, let me know...
it was a really nice unit. (high quality) it was in two pieces... one went into where the plug goes and the other connects the gauge.
the engine was warm and i did pull the fuse to kill the fuel.
the turned each test 5 times. the gauge built up pressure quickly.
if you want i can get the maker and part # of the unit, let me know...
10-25-2001, 07:25 AM
#8
Originally posted by wicked1044
i used the compression tester at my friends shop...
it was a really nice unit. (high quality) it was in two pieces... one went into where the plug goes and the other connects the gauge.
the engine was warm and i did pull the fuse to kill the fuel.
the turned each test 5 times. the gauge built up pressure quickly.
if you want i can get the maker and part # of the unit, let me know...
i used the compression tester at my friends shop...
it was a really nice unit. (high quality) it was in two pieces... one went into where the plug goes and the other connects the gauge.
the engine was warm and i did pull the fuse to kill the fuel.
the turned each test 5 times. the gauge built up pressure quickly.
if you want i can get the maker and part # of the unit, let me know...
10-25-2001, 07:40 AM
#10
Supporting Maxima.org Member
Join Date: Oct 2000
Location: Rochester, NY
Posts: 3,150
Originally posted by medicsonic
No, it's not a problem, I just was wondering how you got numbers like 176 instead of 175. BTW, stock is 185, min is 142, you are ok.
No, it's not a problem, I just was wondering how you got numbers like 176 instead of 175. BTW, stock is 185, min is 142, you are ok.
10-25-2001, 07:40 AM
#11
I crank like 15 times per cylinder.
Originally posted by wicked1044
stock is 185??? you sure because i thought 185 was for a new car.
i'm wonding if my #s would have been a litte higher if i cranked it 6 times...
stock is 185??? you sure because i thought 185 was for a new car.
i'm wonding if my #s would have been a litte higher if i cranked it 6 times...
Have you done yours?
10-25-2001, 08:11 AM
#18
Originally posted by wicked1044
are there any parts out there to make our engines stronger to hold more power and to increase the life of the engine?? (cams,etc..)
also Medicsonic, what #'s did you get???
are there any parts out there to make our engines stronger to hold more power and to increase the life of the engine?? (cams,etc..)
also Medicsonic, what #'s did you get???
Second Question
1-2-3-4-5-6)165,170,160,175,165,170
10-25-2001, 08:21 AM
#20
Loss of ~8-10% is normal on compression. Once its broken in well, it will level off. The motor I bought with only 1900 miles on it had a 8-10 percent loss of compression (from the 185psi) when I tore it down. I don't have a clue what my compression is on my original motor, but
I should look just to find out what 110,000 miles, and some HARD races for the last 3 years will do to a Nissan VQ. I bet its not as low as you might think
I should look just to find out what 110,000 miles, and some HARD races for the last 3 years will do to a Nissan VQ. I bet its not as low as you might think
10-25-2001, 08:25 AM
#21
Originally posted by Don in Texas
Loss of ~8-10% is normal on compression. Once its broken in well, it will level off. The motor I bought with only 1900 miles on it had a 8-10 percent loss of compression (from the 185psi) when I tore it down. I don't have a clue what my compression is on my original motor, but
I should look just to find out what 110,000 miles, and some HARD races for the last 3 years will do to a Nissan VQ. I bet its not as low as you might think
Loss of ~8-10% is normal on compression. Once its broken in well, it will level off. The motor I bought with only 1900 miles on it had a 8-10 percent loss of compression (from the 185psi) when I tore it down. I don't have a clue what my compression is on my original motor, but
I should look just to find out what 110,000 miles, and some HARD races for the last 3 years will do to a Nissan VQ. I bet its not as low as you might think
10-25-2001, 02:30 PM
#26
Originally posted by MardiGrasMax
Why 5, why 7, It takes 15 for my gauge to stop going up, so thats about where I stop. Then its a true peak psi.
Why 5, why 7, It takes 15 for my gauge to stop going up, so thats about where I stop. Then its a true peak psi.
10-25-2001, 05:09 PM
#27
Senior Member
Join Date: Dec 2000
Posts: 402
Originally posted by got rice?
That's how I've been taught to do it. If you have four cylinders, crank it 5 times. If you have 8 cyl, 9 times
That's how I've been taught to do it. If you have four cylinders, crank it 5 times. If you have 8 cyl, 9 times
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