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Here are my numbers

 
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Old 08-26-2012, 07:25 PM
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Here are my numbers

2000 prelude sh

122xxx miles, car runs great, no smoke except when hitting vtec, no leaks that im aware of. Yet she loves oil, im putting in about half qt to full qt a week (2xx miles).

so i did a compression test this morning and heres what i got, i did 2 dry runs and a wet.

disty left, p/s right
236 232 230 230
237 235 232 230
310 305 305 305 (this was the we test)

Im thinking my oiler ring is the culprit. i plan on doing seafoam next weekend and retest to see if the numbers fluctuate from the current test. then this winter i will pull the head and see what to do from there. if the cylinder walls look good and i dont need to hone, i plan on type s pistons. if the walls are beat up ill prob swap to a h23a with lsd.

any opinions / input?

dan
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Old 08-26-2012, 09:47 PM
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Re: Here are my numbers

those are good numbers for a car that burns alot of oil , did you warm up your engine to normal engine temps before doing this ?
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Old 08-26-2012, 09:50 PM
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Re: Here are my numbers

dont understand why there so high your numbers , i dont know if you have a jdm swap or not but a healthy h22a is supposed to have 225psi per cylinder yet you have more and you have yet to comfirmed if its jdm or not considering usdm h22a4's are even lower on compression are you sure your doing it correctly ?? pulling fuse for gas , warm engine , cranking over enough number of times

Last edited by vtectapin; 08-26-2012 at 10:00 PM.
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Old 08-26-2012, 10:48 PM
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Re: Here are my numbers

i bought the car from an older gentleman that was very meticulous, motor is original. the car was warmed up when test was performed (i had just got back from the store). i pulled the fuel pump fuse and disconnected the ignition coil. i then let the engine turn over 5-6 revolutions to the point the needle wasnt jumping much. i did 2 dry runs per cylinder then put a capful of 5w-30 in each for the wet test. compression test gauge was with a new actron gauge i just got from amazon. i read carbon build up will cause higher numbers so i plan on doing a seafoam treatment then retesting.

Last edited by Kerrigan911; 08-26-2012 at 10:55 PM.
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Old 08-26-2012, 10:49 PM
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Re: Here are my numbers

car is an sh with working atts, i will double check the head stamp code tomorrow but am almost 100% positive the engine is oem. i thought my numbers seemed high as well but the car runs really well with the exception of the oil consumption i have.

Last edited by Kerrigan911; 08-26-2012 at 10:56 PM.
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Old 08-27-2012, 10:37 AM
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Re: Here are my numbers

well with those numbers it seems fine , lets see what others have to say but look into your valve stems/seals if your puff a lil blue on start up and only in vtec .
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Old 08-27-2012, 11:27 AM
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Re: Here are my numbers

there is no smoke on startup actually, only some when in vtec (just like my b16 i had before)
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Old 08-27-2012, 03:00 PM
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Re: Here are my numbers

just try to find a leakdown tester off a friend or buy one , itll be alot easyer to diagnose your problem if you wanna fix it instead of buying a new block
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Old 08-27-2012, 04:08 PM
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Re: Here are my numbers

I believe the local autozone lets you rent tools, ill stop by and see what i can come up with.
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Old 08-27-2012, 06:56 PM
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Re: Here are my numbers

From those numbers your motor is pretty healthy in terms of consistency, the rings are just worn, normal wear and tear, nothing you can do to fix it except replace the rings/rebuild the motor.
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Old 08-27-2012, 09:52 PM
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Re: Here are my numbers

i plan on taking it apart over winter, once the heads off i will have a better idea of my course of action. as long as the cylinders look good, i plan on replacing all seals, type s pistons, timing belt, water pump, manual tensioner and new clutch flywheel.

if the bottom end looks beat up, h23a with lsd and obd2
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