Compression good enough?
08-22-2005, 05:28 PM
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Re: Compression good enough? (2000civic-Si)
Seems kinda low, but atleast the numbers are all in the same area. My b18a1 has compression in all four around 195 psi. Did you make sure you did it with the throttle fully opened?
08-24-2005, 07:42 PM
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Re: Compression good enough? (Suck my DX)
Thanks, thats kind of what I was thinking too. I originally had someone else do the test. Bought myself a compression gauge yesterday and tested it myself today. My new results are:
cylinder 1: 181
cylinder 2: 185
cylinder 3: 195
cylinder 4: 195
*Don't know why cylinder 1 is so much lower than 3 and 4.
I may check again soon. I waited 30-40 mins after running my car. Maybe it cooled a little too much, who knows...Anyway thanks for the responses. I've learned quite a bit about my first honda so far.
cylinder 1: 181
cylinder 2: 185
cylinder 3: 195
cylinder 4: 195
*Don't know why cylinder 1 is so much lower than 3 and 4.
I may check again soon. I waited 30-40 mins after running my car. Maybe it cooled a little too much, who knows...Anyway thanks for the responses. I've learned quite a bit about my first honda so far.
08-24-2005, 09:03 PM
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Re: Compression good enough? (2000civic-Si)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2000civic-Si »</TD></TR><TR><TD CLASS="quote">Thanks, thats kind of what I was thinking too. I originally had someone else do the test. Bought myself a compression gauge yesterday and tested it myself today. My new results are:
cylinder 1: 181
cylinder 2: 185
cylinder 3: 195
cylinder 4: 195
</TD></TR></TABLE>
I have a boosted B16 with 9:1 compression and i hit around 190....doesnt that seem a little low?
cylinder 1: 181
cylinder 2: 185
cylinder 3: 195
cylinder 4: 195
</TD></TR></TABLE>
I have a boosted B16 with 9:1 compression and i hit around 190....doesnt that seem a little low?
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08-27-2005, 08:22 PM
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Re: Compression good enough? (2000civic-Si)
Ok, here's what I did: pulled the 15a f/i fuse and the 15a ecu fuse. Cranked each cylinder 5-7 times (until max psi was reached). I used a $20 compression gauge from O'Reillys. I've changed the oil twice in the last 5k miles since I've owned my '00 si with Mobil 1 5w30 and k&n oil filter. Anything I've done wrong or could do better? What's average for a stock b16a with about 93k miles? For the mileage of the motor it's impressive I haven't seen not one drop of any kind of fluid (leaking) anywhere in the engine bay and my b16 seems to pull quite hard for stock. But then again I'm new to Japanese engines, and I don't know exactly how hard a "healthy" stock b16a pulls. I've owned too many American cars for too long...
08-28-2005, 09:44 PM
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Re: Compression good enough? (2000civic-Si)
The numbers are decent for a car with 93K on it. My built motor is 185ish with 9.0:1 pistons in it. Numbers are always dependent on the gauge, it might read higher on another gauge. The big thing is that they're within 10% or so from each other.
08-29-2005, 09:34 AM
#11
Re: Compression good enough? (2000civic-Si)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2000civic-Si »</TD></TR><TR><TD CLASS="quote"> Cranked each cylinder 5-7 times .</TD></TR></TABLE>
use the same number of cranks for each cylinder...if u dont ur results wont be accurate...if ur so concerned about the compression, do a leakdown test.
use the same number of cranks for each cylinder...if u dont ur results wont be accurate...if ur so concerned about the compression, do a leakdown test.
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