Question on thicker head gasket??

[j_fukin_t]

once again still new, i'm gonna boost either in the fall or spring, and trying to gather all the info i can, now i've seen the thicker head gaskets that lower c/r, is that going to hurt me or help me??? i'm only gonna be boosting at TOPS 7-8 psi, just wondering if i would be wasting my time or what thanks in advance peeps.

 

[lkailburn]

don't use a thicker headgasket to lower compression ratio. its like a cobb jobb setup and you won't see too much of a difference.

for boost you DO want lower compression(9.1 - 9.5 is great) but you can just as easily boost a 10.0:1 setup.. you just need some good tuning.

go with an OEM headgasket directly from honda and pick up a set of arp headstuds. the studs are much better than the oem bolts because they will not stretch and will help reduce the chance of blowing your head gasket.

goodluck

 

[j_fukin_t]

is a lower c/r gonna give me better performance??? all i'm putting on is the bolt on greddy kit if that helps you any, i dont need a h/g just wondering my options, and thanks again for the info

 

[Blazed]

ofcourse it will..turbos are meant for low compression applications...

 

[lkailburn]

low compression is safer to run boost on. less chance of detonation.

 

[Blazed]

^^^^^hey what part ny u from?

 

[banzai]

low compression is safer to run boost on. less chance of detonation.

yes. on an n/a point of view lowering the compression will actually hinder the performance. However, once you add the turbo its safer to have the low compression because there is alot more pressure going into the cylinders, but i dont think it will actually give you better performance. More of a safety, precautionary thing.

 

[lkailburn]

yah. a higher compression turbo setup will make more power than lower BUT its more risky and requires far extensive tuning and so on. nice thing about lower compression is you can safely turn up the boost a little hehe

of course all of this is relative to a hundred different factors but you get the point.

i live in rochester, ny btw

 

[racerx661]

head gasket is really not need but if its time for a new one, then by all means go a lil bit thicker...low compression will not hinder the performance but allow you run again a lil more safely and boost a lil more....from what ur avatar states id that u have a 99 si so u can boost 7-8 for daily driving and crank it up to about 11 psi without effing internals up ....

 

[j_fukin_t]

head gasket is really not need but if its time for a new one, then by all means go a lil bit thicker...low compression will not hinder the performance but allow you run again a lil more safely and boost a lil more....from what ur avatar states id that u have a 99 si so u can boost 7-8 for daily driving and crank it up to about 11 psi without effing internals up ....

thanks to all for the quick responses, i pretty much got my question answered

 

[lkailburn]

head gasket is really not need but if its time for a new one, then by all means go a lil bit thicker...low compression will not hinder the performance but allow you run again a lil more safely and boost a lil more....from what ur avatar states id that u have a 99 si so u can boost 7-8 for daily driving and crank it up to about 11 psi without effing internals up ....

seriously.. does everyone think like this?!?!. is it like a disease. psi doesn't matter. its all dependent on how much power your making

7/8 psi and 11psi are gonna give different results than 7/8psi and 11psi on another turbo

sorry to snap just now but it just seems that EVERYONE in the world thinks that you can gauge things simply by how many pounds of boost your running without considering what turbo or what else is in the setup.

head lift from boost is pretty prevelant in d-series engines which is why i recommend to any d series guy to replace the hg and throw in some arp studs. head lift isn't as notorious in the bseries but its still a nice added safety peice to have a new gasket and studs in there. however with the thicker gaskets i've heard alot of stories with them blowing due to improper designs. and for about a .3 cr drop and for 3 times the cost of an oem headgasket i still always say go with oem. they designed the head and block, they know how to design the gasket for it.

goodluck with the build. sorry if i seem hostile

-Luke

 

[civicsi94]

IMO just buy a cometic headgasket. its only 100 bucks average.prices vary lol

 

[Going-West]

seriously.. does everyone think like this?!?!. is it like a disease. psi doesn't matter. its all dependent on how much power your making

7/8 psi and 11psi are gonna give different results than 7/8psi and 11psi on another turbo

sorry to snap just now but it just seems that EVERYONE in the world thinks that you can gauge things simply by how many pounds of boost your running without considering what turbo or what else is in the setup.

head lift from boost is pretty prevelant in d-series engines which is why i recommend to any d series guy to replace the hg and throw in some arp studs. head lift isn't as notorious in the bseries but its still a nice added safety peice to have a new gasket and studs in there. however with the thicker gaskets i've heard alot of stories with them blowing due to improper designs. and for about a .3 cr drop and for 3 times the cost of an oem headgasket i still always say go with oem. they designed the head and block, they know how to design the gasket for it.

goodluck with the build. sorry if i seem hostile

-Luke

well in this case, it is ok to judge by psi because he already said he was just bolting on a greddy kit, and he knows what size turbo it is, so yes, in this case its ok.

 

[lkailburn]

i must admit, i went back to his first post only to read what turbo he was using. i must have missed where he said the greddy kit. even still, there are different greddy kits out there correct? i never much looked into them, i went straight for custom

 

[j_fukin_t]

i must admit, i went back to his first post only to read what turbo he was using. i must have missed where he said the greddy kit. even still, there are different greddy kits out there correct? i never much looked into them, i went straight for custom

only one greddy bolt on kit for 99-00 si's, but i understood what you were saying, diff setups give diff results,