1 cyl 2nd 3rd 4th
180 175 185 190 in(psi)

are those numbers good?

Motor from HMO


any input on that?!

 

Those compression reading are all good

 

outta curiosity is that 1st or 2nd gen?

 

Seems kinda low...

the ones I've tested are all 215+ (unless my tester sucks...)

At least they're pretty consistent.

 

thats why i was wondering, my b16 2nd gen is 225,224,225,229

 

The motor is 2nd gen and 185psi is brand new compression so how you figure 215psi+ ..... b16a don't have that much of compression....

or maybe my compression tester is off then ....

 

those numbers are good. I dont know why people are getting such high readings off thier cars. You can calculate CR from PSI, and if what everyone is saying is true, they are running 11:1 or so. Doesnt make sense to me. Anyway, your sompression numbers are fine.

 

here are my numbers:

motor: 92 b16a.

cylinder #1: 220
cylinder #2: 220
cyclinder#3: 230
cylinder #4: 225

 

My guess would be that our older motors have carbon build up. 185 is fine... conistency is most important.

 

My compression was done on a cold motor i never adjusted the valves yet which im gonna do and check the compression after that oh by the way motor is 93 (JDM) b16a 5 million series

 

I just pulled my head tonight because of a funny noise throughout RPM range.
I did a compession test and here what I got .

#4=215
#3=215
#2=215
#1=120
So the head comes off I coulnt see any piston to valve contact and the block looks great. Any ideas. The head is going to be pressure tested Thurs in my day off I really hope it is the head (valves). and not the block.

By the way it is a JDM b18c Turbo
If you guys would like theorize on my situation be my guest.(2 heads are btter than one)..
Thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lysawy &raquo;</TD></TR><TR><TD CLASS="quote">

or maybe my compression tester is off then ....

</TD></TR></TABLE>

maybe you have a differant brand or kind some differant kinds read differant #'s not everyone has the same ****

 

how can you calculate CR from the compression test results. I think that would be of interest to quite a few people, including myself.

-Erik

 

I dont have the formula memorized, but just go to http://www.team-integra.net and do a search. Michael Delany is the god of engine tech.