anyone know what they should be, more or less?

 

11:1

 

i think they should be around 200

the compression RATIO for jdm h22 is 10.6:1 isnt it? type-s is 11:1 right?

 

i got #1 250 #2 255 #250 #4 250 and i have a jdm h22a bone stock

 

jdm h22a is 10.6:1 compression ratio

 

Some nice #'s

 

#1-270 #2-270 #3-270 #4-270

 

yeah jdm is 10:6 compression. those are some pretty high compression numbers. i got mine tested about a month ago and no where close to those numbers i got like 210 on cylinders 1-3 and 185 on cylinder 4.

 

i think that if your getting 270 than you are doing it wrong that is way too high. there has been a million threads about this just search

 

i believe i did it right because i did the exact same thing as in http://www.c-speedracing.com/h...t.php
higher numbers are better then lower numbers but yea i know its kinda high for a JDM h22a i was thinking 240-260

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93JDMH22A &raquo;</TD></TR><TR><TD CLASS="quote">#1-270 #2-270 #3-270 #4-270 </TD></TR></TABLE>
Woa grave robber...this is three years old.

 

i believe when i did mine i got 215 across the board.

 

i got around 220 across the board give or take 10

 

does ne1 know the fuse number (underhood fuse box?) to pull so that you don't put a bunch of fuel in the cylinders while testing? I think i'm gonna do this tomorrow.

 

i dont think that there is one on the preludes or integras, but i may be wrong, i just did mine, didnt remove any fuse, just take all the spark plugs out, u only have to crank a few times, and let it dry out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Altilude &raquo;</TD></TR><TR><TD CLASS="quote">does ne1 know the fuse number (underhood fuse box?) to pull so that you don't put a bunch of fuel in the cylinders while testing? I think i'm gonna do this tomorrow.</TD></TR></TABLE>

It really doesn't matter. You don't have to disable the fuel. I did one on mine without disabling the fuel. Just disabled ignition. Its not like your car won't start after You're only supposed to bump the starter 5 times each. Won't dump that much fuel in the cylinders.

Oh, by the way. I got 230 across

 

how many times are you guys turning the key. let it crank 5 times per cylinder. then read the number.

 

yah i ended up just bridging at the starter - thereby bypassing any form of fuel injection... ended up with great numbers on my jdm h22a, cylinder 1 was like 250, 2 = 240, 3 = 240, 4 = 240, that's with 5 cranks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by illusion &raquo;</TD></TR><TR><TD CLASS="quote">jdm h22a is 10.6:1 compression ratio</TD></TR></TABLE>

 

the fuel pump fuse is on the interior fuse block. there should be a chart on the door. I think it's a 15A beside only one other fuse on the top part separated from the rest of the fuses.


for comparison on my USDM H22a: starting with 10:1 comp, 245 across

not sure what ratio that converts to but I have a thinner HG, JDM shortblock and +1mm ferreas