I'm trying to find out what the avg. is on a JDM B18c when a compression test is done. My motor should have about 40k miles on it. What should i be seeing? Also, what would a completely stock JDM b18c be dynoing at? I understand that different dynos, cars, engines, how many people fart in a day can effect what #'s you see on a dyno, but what is the avg. for a stock JDM?

 

bump

 

B18c as in GSR or ITR?
Both are stamped B18C on the JDM versions.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">B18c as in GSR or ITR?
Both are stamped B18C on the JDM versions.</TD></TR></TABLE>

Correct. Be more specific and we'll give you all the answers you need.

 

on my 94 B18c(sir-g) I have 240 on all cylinders which is a little high, I think stock it should be 200-220 &lt;--- thats a guess not fact.

 

my bad ya'll, i just figured that since i didnt say ITR you guys would know. But its a GSR b18c JDM

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fasthatchb18c1 &raquo;</TD></TR><TR><TD CLASS="quote">on my 94 B18c(sir-g) I have 240 on all cylinders which is a little high, I think stock it should be 200-220 &lt;--- thats a guess not fact.</TD></TR></TABLE>

thanks, anyone else?

 

190-220 on each cylinder, matching numbers matters more than higher or lower.

~power you should be in the 155-170 range. I think. (total guess)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Relic1 &raquo;</TD></TR><TR><TD CLASS="quote">190-220 on each cylinder, matching numbers matters more than higher or lower.

~power you should be in the 155-170 range. I think. (total guess)</TD></TR></TABLE>

coo, thank you. Anyone else have anything else to add or is this pretty much correct?

 

Sounds about right. On a compression check, (the engine should be warm) there shouldn't be more than a 10% difference between the highest and lowest cylinders.

US spec B18C1 usually put down 145-ish in stock trim, so you can hypothesize from there how much power you'll get from a couple extra compression points.