I tested my 94 integra ls with 225,000.I did the dry and wet test and these were the results.What do you guys think?

Dry Wet
175 181 #1
155 165 #2
155 168 #3
178 178 #4

 

How much oil did you add on your wet test? Any added oil should make the compression jump which cylinder 4 didnt. On top of that, chances of oil actually getting to the rings is slim to none....

 

time for leakdown

 

I added a tablespoon

 

Then I vote for error in the testing method. 1 tablespoon = 14.Xccs. Adding 14ccs of volume to the combustion chamber should up it around 30psi. On top of that, have you seen a LS piston? If added through the spark plug hole, the oil will never make it to the rings (its going to sit in the dish of the piston/valve reliefs). When you did the test, car was fully warmed up at wide open throttle? Turned it over 4-5 times or until the needle stopped moving?

 

The car was fully warm and it was at wot when I did the test.I turned it over till the needle stopped moving.

 

did you remove the blue 10 fuse for your ECU under your hood..And did you hold down the gas pedal while doing the test..That makes a big diffrence also..

ANy thing "95 INTEGRA" say is relable he has helped me in many situations...

 

I did my B16 XSi. Cold engine. Dry test. My #'s were 210 across the board.

I would say you did something wrong. And what was stated above, when you put the oil in, try and squirt it in real hard with a syringe or something so the oil will splash up all over and make a seal.

But from the looks your numbers now, your head gasket is bad between cylinder 2 and 3. Thats why those 2 are lower than 1 and 4. You can do a leak down test to confirm, but 2 low readings from side by side cylinders mean head gasket.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 92integraVTECgsr &raquo;</TD></TR><TR><TD CLASS="quote">I did my B16 XSi. Cold engine. Dry test. My #'s were 210 across the board.

I would say you did something wrong.</TD></TR></TABLE>
speak for yourself. a compression test should be done at operating temp.

anyway, as for the OP, those numbers aren't bad for that year and mileage. seems you have minimal ring wear giving that the numbers didn't jump much on the "wet" test.

95 integra, a cylinder with healthy rings on the piston will not get much of a jump on a "wet" test vs. "dry".

as for the numbers on the center two, it's probably that the head gasket is a bit worn between them. this does not mean the the engine won't go on for a while though.

anyway, to be certain of any of this, you'd need to do a leakdown test.

 

my 1990 ls read about 190 on every cylinder with a cold engine doing the dry test. i should try it with a warm engine.

 

your numbers are good. My 99 LS compression is at 125 all across at 135,000 miles

 

My 94 gsr 156,000 on it has 245 across the board,warm motor, dry test.