Valve Adjustment and Compression check..done...

[blodi]

Well I did my first NSX valve adjustment today....not too hard actually. Saved myself over $500! Easily worth it. The back bank is a bit of a pain, but still not that bad.
I did a compression check too after I finished up. I warmed the car up, pulled all the plugs and cranked it over with the throttle wide open. I read though on here afterwards that I should have pulled the fuel pump relay.
My results were:
#1-241
#2-239
#3-240
#4-234
#5-240
#6-240
Looking at this, it seems my results are sky high...is this because I didn't pull the fuel pump relay? I guess I might have to do it again.

 

[nigel]

Should be ok.
Now get back in there and finish those signal covers.

Cheers
nigel

 

[goldNSX]

Looking at this, it seems my results are sky high...is this because I didn't pull the fuel pump relay? I guess I might have to do it again.

I don't think so. Your reading may have been biased by a too optimistic gauge. But anyhow your results are excellent.

 

[blodi]

Should be ok.
Now get back in there and finish those signal covers.

Cheers
nigel

Haha, there is no hiding from you on these boards! I swear it's the supplier that is rediculously slow....not me. I have everything all ready here to assemble and ship them once I actually get them.

I don't think so. Your reading may have been biased by a too optimistic gauge. But anyhow your results are excellent.

Could be...seems that I was reading that 160 was a normal reading. So mine seems really high, but at any rate I guess what you are supposed to be looking for is any big variance in the cylinders...seems like mine are pretty even.

 

[Daedalus]

Nominal new compression is 199 psi. I think fuel in the cylinder would be more likely to lower results than raise them. Grouping looks very good, though interesting #4 is anomalous, relatively speaking.

 

[goldNSX]

Could be...seems that I was reading that 160 was a normal reading. So mine seems really high, but at any rate I guess what you are supposed to be looking for is any big variance in the cylinders...seems like mine are pretty even.

From the SM 3-2

Normal: 199 psi
Minimal: 142 psi
Max. variation: 28 psi

So, your engine is in very good condition. Don't bother about the -7 psi of cyl #4.

EDIT: Daedalus has been faster...

 

[Hard2find]

as long as the numbers are within each other, youre golden!