compression tests
Thread Starter
Joined: Jun 2003
Posts: 58
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From: Montreal
compression tests
I just rebuilded my JDM engine and now I have 8000Km on it...
I did a compression test with a 2001 USDM type-r... and the USDM has 12 psi over me on the gage.... he had 180 psi on each cylinder I had 168psi...
i used a cheap gage thats why they are low.. but still there is a difference between the 2 engine?
what does this mean?
thanks
I did a compression test with a 2001 USDM type-r... and the USDM has 12 psi over me on the gage.... he had 180 psi on each cylinder I had 168psi...
i used a cheap gage thats why they are low.. but still there is a difference between the 2 engine?
what does this mean?
thanks
Honda-Tech Member
Joined: Aug 2000
Posts: 12,092
Likes: 2
Re: compression tests (ScorpioX)
Sorry, but even 180 is low ...for an ITR.
Readings will also depend on how many times you let the motor turn over, and wether or not the throttle was held down.
Did you have all the plugs removed?
Readings will also depend on how many times you let the motor turn over, and wether or not the throttle was held down.
Did you have all the plugs removed?
Honda-Tech Member
Joined: Nov 2001
Posts: 5,699
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From: Southern cali or boston
Re: compression tests (zygspeed)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by zygspeed »</TD></TR><TR><TD CLASS="quote">Sorry, but even 180 is low ...for an ITR.
Readings will also depend on how many times you let the motor turn over, and wether or not the throttle was held down.
Did you have all the plugs removed?</TD></TR></TABLE>
well on a usdm, if it is cold... and depending on the tester and how he tested... maybe not that bad
main thing is the one @ 168...
i would keep an eye on it...
if u did a warm compression test, then i would do a leak down and see were ur problem is
Readings will also depend on how many times you let the motor turn over, and wether or not the throttle was held down.
Did you have all the plugs removed?</TD></TR></TABLE>
well on a usdm, if it is cold... and depending on the tester and how he tested... maybe not that bad
main thing is the one @ 168...
i would keep an eye on it...
if u did a warm compression test, then i would do a leak down and see were ur problem is
Member
Joined: Jan 2002
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From: Bitch Slapping Your Ass Around The Twisties n Doin, it Doggy style At a theater near you
Re: compression tests (ScorpioX)
Assuming that you did the test right-
your valves may not be sealing completely
( valve spring height installed, valve lash, Valve grinding into the seats )
Improper seating of compression rings in the bottom end
Leak down FO SHO
Good luck
your valves may not be sealing completely
( valve spring height installed, valve lash, Valve grinding into the seats )
Improper seating of compression rings in the bottom end
Leak down FO SHO
Good luck
Thread Starter
Joined: Jun 2003
Posts: 58
Likes: 0
From: Montreal
Re: compression tests (Nvious R)
Hi,
I went to my friends house and i did a compression test with his gage which is the same gage i tested my engine with when i first bought it 3 yrs ago and it gave 210psi on each cylinder.. now with that same gage after the engine rebuild.. im getting 195psi... what went wrong in the rebuild?
thanks
I went to my friends house and i did a compression test with his gage which is the same gage i tested my engine with when i first bought it 3 yrs ago and it gave 210psi on each cylinder.. now with that same gage after the engine rebuild.. im getting 195psi... what went wrong in the rebuild?
thanks
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