 Engine test results, Are these good numbers? |
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 Mar 12, 2008 - 9:07 PM
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 Enthusiast  Joined Jan 31, '07 From Ontario, Canada Currently Offline Reputation: 1 (100%)  |
Just done a compression test on my engine today, 94 7afe 105,000miles (170,000km).
Cylinders: 1) 192 2) 191 3) 192 4) 192 Are these good numbers? Im gonna be turboing this car so are these numbers good? (Also passed leak-down test no problem. |
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Mar 12, 2008 - 9:11 PM
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 Enthusiast Joined Jan 29, '07 From Hoyt Lakes, MN Currently Offline Reputation: 11 (100%) |
Dude those numbers are hella good. Thats good enough to boost.
-------------------- 98 Celica gt red- totaled deer
94 Celica st black DD (bad weather beater)- totaled deer 95 Celica gt silver- chassis sold 88 Celica All-Trac (Burned to a crisp) 94 Celica gt white (sold) In need of a rust free chassis!!!! |
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Mar 12, 2008 - 9:56 PM
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 Enthusiast Joined Mar 8, '04 From Newport, RI Currently Offline Reputation: 63 (99%) |
what you're looking for is consistancy across all 4 cylinders. That seems it's just fine.
FYI the variance can be no more than 14psi from the highest to the lowest. -------------------- |
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Mar 13, 2008 - 5:14 PM
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Enthusiast Joined Jan 31, '07 From Ontario, Canada Currently Offline Reputation: 1 (100%) |
What compression per cylinder is PERFECT (toyota's original, if it were a brand new engine)?
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Mar 13, 2008 - 5:47 PM
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 Enthusiast Joined Mar 15, '07 From Tennessee Currently Offline Reputation: 52 (100%) |
QUOTE(mikecelica @ Mar 13, 2008 - 6:14 PM) [snapback]653418[/snapback] What compression per cylinder is PERFECT (toyota's original, if it were a brand new engine)? can you explain how you did it, or did somebody did it for you? -------------------- Learned a lot in 10 years... I hardly log in anymore, last login Today Sept 6 2019, and I was forced just to clarify a post. LOL
If you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in 2grfe Swapped... Why I chose the 2GR, before you ask read here... A great civilization is not conquered from without until it has destroyed itself from within. @llamaraxing in Instagram is the best way to find me. I hardly log here anymore. |
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Mar 13, 2008 - 5:53 PM
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 Enthusiast Joined Feb 7, '07 From Portland, Oregon Currently Offline Reputation: 67 (96%) |
x2!
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Mar 13, 2008 - 6:08 PM
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 Enthusiast Joined Jan 31, '08 From Canada Currently Offline Reputation: 0 (0%) |
compression tester...all u need to do is screw it into ur spark plug hole and whirl the car over, the gauge should hold the psi , if not then either the gauge is leaking at the spark plug hole or u could have other problems, headgasket, warped head, cracked head...
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Mar 13, 2008 - 7:42 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
excellent, now redo the test with a teaspoon of oil in each cylinder. post those numbers, that gives an idea of how well your rings are sealing, but it seems like you're fine.
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Mar 13, 2008 - 8:04 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
QUOTE(mikecelica @ Mar 13, 2008 - 6:14 PM) [snapback]653418[/snapback] What compression per cylinder is PERFECT (toyota's original, if it were a brand new engine)? There is no such thing as a perfect number. As long as your results are even, and you get at least 165psi, then you have perfect compression. The actual numbers are meaningless. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Mar 13, 2008 - 8:05 PM
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Enthusiast Joined Jan 31, '07 From Ontario, Canada Currently Offline Reputation: 1 (100%) |
A mechanic did it for me at work. So I put a teaspoon of motor oil into the cylinder where the spark plugs where and then run the test again?
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Mar 13, 2008 - 8:49 PM
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Enthusiast Joined Mar 11, '06 From Way South Chicago Currently Offline Reputation: 0 (0%) |
well to be thorough, a wet compression test is a good idea and its good to know how to do one. you're number are great so you're fine and dont need to. but if you were to have one cylinder thats alot lower than the others you put in oil to see if its the rings or valves leaking.
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Mar 13, 2008 - 9:41 PM
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 Enthusiast Joined Jun 16, '06 From Bowling Green KY Currently Offline Reputation: 7 (100%) |
this has some very useful info on it guys. it helped me !
 http://www.autozone.com/az/cds/en_us/09008...irInfoPages.htm -------------------- **If you play My Brute, joing the 6gc.net clan!**
--A section of a kid's actual test that had been scanned--  |
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