b16a compression test
03-05-2007, 02:31 PM
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b16a compression test
did a compression check last night with cold motor and wot and it came out as 240-241-242-243. i no everything is fine but wanted to know what average numbers were? thanks for the help
03-05-2007, 02:34 PM
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Re: b16a compression test (sohctodohc)
You can't get "average numbers" because every compression tester will test differently. You're not looking for a specific number across all testers - you're looking for the variance in the numbers you get on your tester with the same number of cranks per cylinder.
Your numbers are awesome. You have nothing to worry about. You have almost less than 1% variance across all four
Your numbers are awesome. You have nothing to worry about. You have almost less than 1% variance across all four
03-05-2007, 04:04 PM
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Re: b16a compression test (Dann6968)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dann6968 »</TD></TR><TR><TD CLASS="quote">I'm no expert, but, are those numbers not a bit high? Is this a built engine? Carbon build-up maybe?</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Archidictus »</TD></TR><TR><TD CLASS="quote">You can't get "average numbers" because every compression tester will test differently. You're not looking for a specific number across all testers - you're looking for the variance in the numbers you get on your tester with the same number of cranks per cylinder.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Archidictus »</TD></TR><TR><TD CLASS="quote">You can't get "average numbers" because every compression tester will test differently. You're not looking for a specific number across all testers - you're looking for the variance in the numbers you get on your tester with the same number of cranks per cylinder.</TD></TR></TABLE>
03-05-2007, 04:11 PM
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Re: b16a compression test (Archidictus)
no its completely stock besides i/h/e unless something was done inside before it was bought. it pulls pretty crazy for a b16 i have rode in other b16 civs and none felt like this one. i dont know
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03-06-2007, 11:05 PM
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Re: b16a compression test (DeadEnd9009)
Archidictus - Though that makes sense, 240-245 is quite a bit higher than most variances between any half decent tester should be. Doesnt make sense to me. Then again, like I said, I am no expert.
03-07-2007, 03:13 PM
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Re: b16a compression test (sohctodohc)
Read up on how to get rid of carbon build up and give that a try. Then do the test again.
One way is to pour water into your intake. Becareful not to use too much as you will hydrolock you engine. Just use enough to make the car bog a bit while revving (by a friend) around 2500.
One way is to pour water into your intake. Becareful not to use too much as you will hydrolock you engine. Just use enough to make the car bog a bit while revving (by a friend) around 2500.
03-07-2007, 04:15 PM
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Re: b16a compression test (Dann6968)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dann6968 »</TD></TR><TR><TD CLASS="quote">Read up on how to get rid of carbon build up and give that a try. Then do the test again.
One way is to pour water into your intake. Becareful not to use too much as you will hydrolock you engine. Just use enough to make the car bog a bit while revving (by a friend) around 2500.</TD></TR></TABLE>
or use seafoam and don't worry as bad about hydrolocking
One way is to pour water into your intake. Becareful not to use too much as you will hydrolock you engine. Just use enough to make the car bog a bit while revving (by a friend) around 2500.</TD></TR></TABLE>
or use seafoam and don't worry as bad about hydrolocking
03-07-2007, 04:45 PM
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240 to 245 is not high at all for a cheaper compression tester. They are mass produced and uncalibrated so you really can't put too mush stock into the total number, just the average. I have two, a nice one and a cheap one. There is a 30 psi difference between the two although they will both have a very similar variance between cylinders which is important.
And I agree with seafoam. No need for water in the intake.
And I agree with seafoam. No need for water in the intake.
03-07-2007, 05:30 PM
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Re: (Jay_Sensing)
hmmm...i use to seafoam my d16 and never had a problem. but my freind had a h22 he did it once and it never did quite run the same. and thats not in a good way.
03-07-2007, 05:53 PM
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The reason behind some cars running like crap is fairly simple. Some of them are so worn out on the valve seats and other area in the head that the carbon deposits are all that are holding compression.
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