My compression #`s on JDM GSR w/ ITR slugs: your input please...
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My compression #`s on JDM GSR w/ ITR slugs: your input please...
I don`t know whether to smile or cry:
<FONT COLOR="red">
1: 205
2: 210
3: 210
4: 220
</FONT>
This is good, normal, or poor?
TIA!
<FONT COLOR="red">
1: 205
2: 210
3: 210
4: 220
</FONT>
This is good, normal, or poor?
TIA!
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Posts: 2,978
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From: los angeles, ca, united states
Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (sinister)
Good #s 
I would check it again, I bet the #1 goes up.
Also, you dont want them to have more than %10 difference from one another.
I would check it again, I bet the #1 goes up.
Also, you dont want them to have more than %10 difference from one another.
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (sleeperciv)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sleeperciv »</TD></TR><TR><TD CLASS="quote">sounds about right, maybe add a little oil to cylinder #1.</TD></TR></TABLE>
Funny you should mention that. My question is won`t that just mask the low compresion in that cylinder though? I read that it is a sign of bad rings...So adding oil will only help that seal temporarly, won`t it?
Funny you should mention that. My question is won`t that just mask the low compresion in that cylinder though? I read that it is a sign of bad rings...So adding oil will only help that seal temporarly, won`t it?
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (IN VTEC)
The rings and pistons are relatively new, maybe 5k on them, all harsh conditions though. I use regular 5W30 oil, I wanna say the brand is Snap-on, I don`t know tho...
Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (sinister)
The absolute values are probably just fine. The Mac Tools digital gauge I used read about 52psi lower than the Sears gauge I had (260psi vs. 208psi) on back-to-back readings.
Redo the test and standardize the number of cranks to 8. That will help to standardize the comparison b/w the cylinders.
Redo the test and standardize the number of cranks to 8. That will help to standardize the comparison b/w the cylinders.
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (Ivan)
That's much too subjective for cylinder-to-cylinder comparisons. The gauge will still go up little by little.
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (sinister)
those are pretty good numbers.
for cyl #1, could be the rings or ringlands, also make sure the head bolts and all that is torqued properly.
for cyl #1, could be the rings or ringlands, also make sure the head bolts and all that is torqued properly.
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (poison)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison »</TD></TR><TR><TD CLASS="quote">those are pretty good numbers.
for cyl #1, could be the rings or ringlands, also make sure the head bolts and all that is torqued properly.</TD></TR></TABLE>but its only a small difference. I would be scared if it was off a little more then that. The difference here could be cause by something else. gauge, not the same amount of cranks, or something else?
for cyl #1, could be the rings or ringlands, also make sure the head bolts and all that is torqued properly.</TD></TR></TABLE>but its only a small difference. I would be scared if it was off a little more then that. The difference here could be cause by something else. gauge, not the same amount of cranks, or something else?
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Re: My compression #`s on JDM GSR w/ ITR slugs: your input please... (sinister)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sinister »</TD></TR><TR><TD CLASS="quote">I don`t know whether to smile or cry:
<FONT COLOR="red">
1: 205
2: 210
3: 210
4: 220
</FONT>
This is good, normal, or poor?
TIA!</TD></TR></TABLE>
seems aite, what was your method of compression testing?
It all seems to depend on what compression tester you use.
The sears one I have, it says that my friends 10.6 JDM h22 motor is 270...
it says that my 9.97:1 b20vtec is 215-220
take that for what its worth.
<FONT COLOR="red">
1: 205
2: 210
3: 210
4: 220
</FONT>
This is good, normal, or poor?
TIA!</TD></TR></TABLE>
seems aite, what was your method of compression testing?
It all seems to depend on what compression tester you use.
The sears one I have, it says that my friends 10.6 JDM h22 motor is 270...
it says that my 9.97:1 b20vtec is 215-220
take that for what its worth.
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