COMPRESSION TEST ON JDM B18C ITR
10-17-2005, 10:59 AM
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COMPRESSION TEST ON JDM B18C ITR
I did my test and got these numbers....and this is without the butterfly valve at wide open throtle
Cylinder 1- 215
Cylinder 2- 200
Cylinder 3- 220
Cylinder 4- 205
Are these o.k. cause they're all within 10% of eachother?
Would these be in the "normal" 230-240 range with WOT?
let me know guys...thanks
Cylinder 1- 215
Cylinder 2- 200
Cylinder 3- 220
Cylinder 4- 205
Are these o.k. cause they're all within 10% of eachother?
Would these be in the "normal" 230-240 range with WOT?
let me know guys...thanks
10-17-2005, 11:05 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
my friend tested his the other day and he was at 230 across the board. but my friend with a fully build gsr tested his it was at 280. i thing you might have a different headgasket.
10-17-2005, 11:36 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
I would get a bore scope . And do a leak down test . Cuz the 200 in #2 could turn into 180 in no time .
10-17-2005, 11:47 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (omega02379)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by omega02379 »</TD></TR><TR><TD CLASS="quote">I would get a bore scope . And do a leak down test . Cuz the 200 in #2 could turn into 180 in no time .</TD></TR></TABLE>
how much would a bore scope cost and how difficult is a leak down test?
how much would a bore scope cost and how difficult is a leak down test?
10-17-2005, 11:50 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
If you have decent hearing and a compressor with some decent output , you can do a leakdown test . But to buy a leakdown tester or a bore scope , I hope you didn't spend all your money on that motor . Try Craftsman and Mac tools .
10-17-2005, 12:06 PM
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Re: COMPRESSION TEST ON JDM B18C ITR (omega02379)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by omega02379 »</TD></TR><TR><TD CLASS="quote">If you have decent hearing and a compressor with some decent output , you can do a leakdown test . But to buy a leakdown tester or a bore scope , I hope you didn't spend all your money on that motor . Try Craftsman and Mac tools .</TD></TR></TABLE>
I didn't spend all my money on the motor....i bought the car with the motor alreay in it
.......how do i do the leak down test with a compressor, cause i have one, and GOOD HEARING 
I didn't spend all my money on the motor....i bought the car with the motor alreay in it
.......how do i do the leak down test with a compressor, cause i have one, and GOOD HEARING
10-17-2005, 12:23 PM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
Here's a good tutorial:
http://www.c-speedracing.com/h...n.php
http://www.c-speedracing.com/h...n.php
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10-17-2005, 12:29 PM
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Re: COMPRESSION TEST ON JDM B18C ITR (GRIP KING)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GRIP KING »</TD></TR><TR><TD CLASS="quote">Here's a good tutorial:
http://www.c-speedracing.com/h...n.php</TD></TR></TABLE>
Thanks....it is greatly appreciated
http://www.c-speedracing.com/h...n.php</TD></TR></TABLE>
Thanks....it is greatly appreciated
10-17-2005, 12:41 PM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dajman94 »</TD></TR><TR><TD CLASS="quote">I did my test and got these numbers....and this is without the butterfly valve at wide open throtle
Cylinder 1- 215
Cylinder 2- 200
Cylinder 3- 220
Cylinder 4- 205
Are these o.k. cause they're all within 10% of eachother?
Would these be in the "normal" 230-240 range with WOT?
let me know guys...thanks </TD></TR></TABLE>
Before you waste time and money on a leak down test, why don't you do the compression test right??? Doing any test half-*** isn't going to tell you anything!!!
Cylinder 1- 215
Cylinder 2- 200
Cylinder 3- 220
Cylinder 4- 205
Are these o.k. cause they're all within 10% of eachother?
Would these be in the "normal" 230-240 range with WOT?
let me know guys...thanks
</TD></TR></TABLE>Before you waste time and money on a leak down test, why don't you do the compression test right??? Doing any test half-*** isn't going to tell you anything!!!
10-18-2005, 08:54 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (dajman94)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dajman94 »</TD></TR><TR><TD CLASS="quote">
I didn't spend all my money on the motor....i bought the car with the motor alreay in it .......how do i do the leak down test with a compressor, cause i have one, and GOOD HEARING </TD></TR></TABLE>I would of answered this sooner , but for some reason . . . . it got sent to my spam folder ? 
Well you need something that can thread into your sparkplug holes AND hook up to a copressor nozzle . GOOD LUCK !!! I didn't see the link . Forgive before you flame !
I didn't spend all my money on the motor....i bought the car with the motor alreay in it
.......how do i do the leak down test with a compressor, cause i have one, and GOOD HEARING </TD></TR></TABLE>I would of answered this sooner , but for some reason . . . . it got sent to my spam folder ? Well you need something that can thread into your sparkplug holes AND hook up to a copressor nozzle . GOOD LUCK !!! I didn't see the link . Forgive before you flame !
10-18-2005, 09:43 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (spoonek9)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonek9 »</TD></TR><TR><TD CLASS="quote">
Before you waste time and money on a leak down test, why don't you do the compression test right??? Doing any test half-*** isn't going to tell you anything!!!</TD></TR></TABLE>
Def do it again at WOT. Your values may change significantly.
Before you waste time and money on a leak down test, why don't you do the compression test right??? Doing any test half-*** isn't going to tell you anything!!!</TD></TR></TABLE>
Def do it again at WOT. Your values may change significantly.
10-18-2005, 11:02 AM
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Re: COMPRESSION TEST ON JDM B18C ITR (jdmcrxb16)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jdmcrxb16 »</TD></TR><TR><TD CLASS="quote">my friend tested his the other day and he was at 230 across the board. but my friend with a fully build gsr tested his it was at 280. i thing you might have a different headgasket.</TD></TR></TABLE>
280 thats probably like close to 11.5:1-12:1 comp.
280 thats probably like close to 11.5:1-12:1 comp.
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