Hi guys, I have decided to do the thicker headgasket to lower compression until I have enough $$$ to go Hondata and better injectors. My question is, right now my compression is 9.6:1, and I want to get it to about 9 or high 8's, could someone tell me out of these sizes what size should I get?? And if anyone knows how much each gasket lowers the c/r. THANKS!!!!
.031-.037
.042-.048
.050-.058
.060-.069
.070-.079
.080-.089
.090-.099
.100-.125
These are the sizes I saw, which one should I do???

 

call inlinepro @ 703-644-1788, they have what you want in stock.

 

welp, i was looking at a Hussey gasket what do you guys think about those? Its through Flatlander Racing.

 

go with inline pro, they are proven to work, Contact Arturbo, he's a dealer for inline pro..

a 3 mm headgasket will be good enough to get you to 9 flats, you don't want to go below 9 on 1.8L , it's too dman slow at vacuum...

with hondata, honestly, I'd stick at 9.6:1 CR, if you get the hondata tuned correctly, there is no need to lower the CR rate. I am running 9.8:1 and still fine...great power at vac, nice torque, nice spool and accelration...

keep it simple with less headaches, you're going with hondata, you're going in right direction. save the money instead of headgasket and put it in a better way...

stan

 

thanks, but i have a 1.6L and right now i dont have hondata, so until i get that im gonna go lower comp, plus for the 1.6 i heard a 2mm will be sufficient. Also, the difference between the Hussey and Inline pro is like $100, is there really THAT much difference? Has anyone had first hand experience with Hussey?

 

I'd say, keep it the way it is, run 9.6:1 CR, run low boost 6-8 psi, then get hondata, and forget doing headgasket.
there are a lot of ppl who had succesfully achieve high HP with stock motor and HG at 6-9psi...

Compression ratio is not the ONLY factor in preventing blowing up your motor, there are fuel, timing, and etc...
CR is helpful when you wanna run more boost at same level of octane, but again, your FMU will not allow you to run more than 9 psi ish at 12:1 FMU disk rate, since at that point, you're pushing150ish psi of fuel pressure through your fuel system which is too much .

summary: FMU will limits your boost level you can run, so why going with lower CR ?
when you're no longer on FMU, you're gonna have hondata, so you can control timing, fuel and ignition to reduce detonation at ANY CR rate...you can still run 12-13 psi on 9.6:1 CR on hondata safely...I know a lot who's doing 1 bar...

stan

 

my turbonetics wastegate is set at 9psi, i am getting the greddy e-01 so i can adjust boost levels, would 9 be too much?

 

well i found out how those gaskets are measured, so they are WAY too thin for me. just an update on my first post, so I basicly answered my own question. Thanks..

 

well i am using a head gasket from an 88 crx, it cost me about $15 dollars but its a composite gasket and should lower compression to about 9.0-9.1. however i would recommend peeling apart a stock metal head gasket(3 layers) and use the 2 outer layers to place on top of and on the bottom of the crx gasket. This is what i plan on doing in a month or two. ive never heard of anyone doing this though, so it would be experimental. the great part is itll only cost you a little bit of cash as opposed to the really expensive aftermarket head gaskets. if anyone has any input on this idea i would really love to hear your ideas.

 

Flamenco your right on most of your info but you dont know the whole setup. Dual Purpose car has not an FMU but a Er2 fuel injector controller. That is way different then an fmu. The er2 is not as easy to tune becuase of it s relativly small dials within its computer board. The dials scare most average know hows. But having expereince with computers the unit is capable of 30 psi. I would still go Hondata with seperate fuel injectors but for her setup lower compression will acheive maximum hp and torque with stock bottom end. You are on the right path, That car will have a msd boost timing controller, lower comp head gasket, gredy eo-1 and mf2 controller, intercooled, twin 440cc injectors is more then good on a stock bottom end. Thats all Folks!


[Modified by Nissmaxx, 8:37 AM 3/29/2003]

 

any input on my head gasket idea?

 

u could start your own post, maybe you'll get a better response

 

great idea thanks

 

yup...keep the compression the same, but just get a new headgasket to be safe!