Felpro headgaskets and boost?
03-05-2005, 08:04 PM
#1
Staging Lane
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Felpro headgaskets and boost? I was told by CM not to use felpro head gaskets because of fitment issues which will cause the heads to lift under boost, have you guys seen any problem with felpro head gaskets, what kind do you guys recommend?
03-05-2005, 09:11 PM
#2
Launching!
i havent used felpro head gaskets. everyone i know used cometic gaskets including myself for boosted cars...
i havent had any problems w/ them, they are just twice as expensive. and probably for a reason...ha
i havent had any problems w/ them, they are just twice as expensive. and probably for a reason...ha
03-05-2005, 11:55 PM
#3
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you really should consider o-ringing the block or heads, most machine shops can do this, they use a stainless steal or copper .042 wire that lays in a groove cut around each cyl.. what it does is bites into the bottom or top of the head gasket to hold it in place so it doesnt move around. the gasket moves more then what most people think so if you o-ring and use a sce copper gasket it will live forever, not just in boost but in high compression motors they work real well. the cometics are good for low boost 6-10 psi but over youll start pushing the gasket out.
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03-06-2005, 08:15 AM
#9
Launching!
check out some of the sponcers to get cometic gaskets..>>> like speed inc.
as for o-ringing, i never thought is was an exellent idea. the reason being that should you have a wierd detonation problem or something in a cyl. for example, a gasket blowout maybe your only insurrance that your engine will not be damaged. i would say dont o-ring unless you have a serious track car w/ 20 + psi boost.... otherwise just a gasket should def. be enough.... just my point of view.
as for o-ringing, i never thought is was an exellent idea. the reason being that should you have a wierd detonation problem or something in a cyl. for example, a gasket blowout maybe your only insurrance that your engine will not be damaged. i would say dont o-ring unless you have a serious track car w/ 20 + psi boost.... otherwise just a gasket should def. be enough.... just my point of view.
03-07-2005, 07:24 PM
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ive used the 0-ring method for 15+ years and never seen a detonation problem the wire ring is about .250 to .300 away from the edge of the bore so nothing from the chamber can get to it, i built a 16:1 pull truck motor 8 years ago, never popped a gasket yet
03-09-2005, 04:44 PM
#15
No o-ring, standard studs. Been over it before, search for it.
The heads bend, not much you can do about that. But we should have a better handle on that now
I see signs of the heads flexing, but it never gets past the second sealing ring on the gaskets.
The heads bend, not much you can do about that. But we should have a better handle on that now
I see signs of the heads flexing, but it never gets past the second sealing ring on the gaskets.
03-09-2005, 05:28 PM
#16
Launching!
Originally Posted by thebowtieislife
ive used the 0-ring method for 15+ years and never seen a detonation problem the wire ring is about .250 to .300 away from the edge of the bore so nothing from the chamber can get to it, i built a 16:1 pull truck motor 8 years ago, never popped a gasket yet
03-10-2005, 06:09 AM
#17
Originally Posted by y2khawk
No o-ring, standard studs. Been over it before, search for it.
The heads bend, not much you can do about that. But we should have a better handle on that now
I see signs of the heads flexing, but it never gets past the second sealing ring on the gaskets.
The heads bend, not much you can do about that. But we should have a better handle on that now
I see signs of the heads flexing, but it never gets past the second sealing ring on the gaskets.
are you still hoping the AFR's thick deck will stop that?
03-10-2005, 08:28 AM
#18
Originally Posted by smokinHawk
are you still hoping the AFR's thick deck will stop that?
03-10-2005, 08:57 AM
#20
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Originally Posted by y2khawk
FWIW, 170 MPH trap speeds...
GM MLS gaskets
GM MLS gaskets
How many passes per set of gaskets? I have the MLS too and was wondering about longevity and Im sure nobody tortures them like you.
