ok i got a motor off of a guy its a fullu built gsr below is whats done to it....

b18c1 darton open deck 85mm sleeves
-crower crank makes it alomost a 2.2L
-Custom Pauter rods
-wiesco pistons 8:5 compression
-arp head studs
-cometic headgasket
-01 gsr head
-port and polished intake and exhaust side
-Ferrera 1mm oversize valves
-3angle valve job
-crower dual valve springs
-skunk2 titanium retainers
-Crower stage 3 cams 272's
-Aem cam gears
the problem im getting is all my cylinders are between 130-135 i was wondering why its so low for a 9:1 compression motor it seems to its 8:5:1 right any help would be great thanks.but when we did the test it wasnt at wide open throttle we where just turning it over

 

well since they are even thats a good thing. go back make sure the battery is good and charged, and do it with the throttle wide open. and if the results are the same, leakdown it.

 

how do you do a leakdown test

 

can anyone else help me out on how to do a leakdown test or do i take it to a shop. i just seen a small gas leak from a fuel line i gotta fix

 

You can do it your self, you can buy one at an automotive store.....

 

any other answers?if they where the 9:1 cp pistons what would make every cylinder be the same?130-135 in each cylinder is low for 9:1

 

thought you had wiseco pistons?? why now are you saying cp?

 

i was puttin cp for compression my bad i do have wiseco pistons.but the guy said they where 9:1 and that comprssion is low for them

 

one step at a time tiger, why don't you first do your compression check PROPERLY like the first post asks then worry about leak down. honda-tech will be right here when you get back...

 

Is this a nitrous motor or a boosted motor? 85.5mm bore is living dangerously with boost.

 

boosted...we redone the compression wot and its still the same

 

85.5mm bore is too much for a boosted motor, the area between the sleeves is paper thin and you will more than likely have headgasket issues and you could possibly even crack a sleeve. Do a leakdown test and see what happens, if the motor has been boosted already I would personally be very nervous pushing it, buying a boosted used motor is already fishy but one with an 85.5mm bore and using it reliably (sp?) is crazy IMO

And I suspect a Stg3 Cam with +1mm Oversize is very close on the V2V clearances, I would be careful of that, those big cams are probably going to hurt your boosted motor in terms of power.

 

the tat had it before me made 650 plus if its gonna be a problem i ll just put the stock cams in it.im pretty sure its gonna be hard to crack a sleeve

 

its 85mm and 8:5 pistons just got off the phone with the guy

 

updated the info from the guy i got it from

 

Honestly my 8.3:1 motor makes 135psi across all four, it makes 340whp at 12psi on 91 octane, i never thought it was an issue, i still don't. I don't think you have any problems...