Head Gasket Thickness

Minimalitia · 01-25-2006, 03:45 PM

Hey there i was wondering if anyone knew some thicknesses on diff makes of head gaskets and which material gasket is better? I'd like to go with a thinner gasket to improve compression a lil more. i am installing a ported and polished head that is also knife edged, has mildly aggressive cams and new valve seals and guides. it is also mated to a port matched intake manifold. unless someone else can tell me why i wouldnt want to increase compression! lol thanks

VtecvrsTurbo · 01-25-2006, 03:51 PM

I can tell you why you wouldnt want to increase compression. The more boost and compresion you have, the higher octane gas you will need. You can keep OR lower your comrepession and have boost higher then your gauge. But unless you want to run 113 octane gas all day, then go your way. Oh and spell check aint working sorry.

dvbrien · 01-25-2006, 03:57 PM

here is some for greddy...

motor - thickness (mm) - Bore - Part#
MIT 4G63 - 1 - 86 - 13531200
MIT 4G63 - 1.2 - 86 - 13531201
MIT 4G63 - 1.4 - 86 - 13531202
MIT 4G63 - 1.6 - 86 - 13531203
MIT 4G63 - 1.8 - 86 - 13531204
MIT 4G63 - 2 - 86 - 13531205

All are listed at 219.
Thicker gaskets reduce the compression of your engine. Generally, a lower compression will provide you with increased engine life.

IMO ~ Metal is the way to go!
dvb

Minimalitia · 01-25-2006, 03:59 PM

If it helps i only run 94 octane minimum fuel in my car.

VtecvrsTurbo · 01-25-2006, 04:00 PM

if you do go with metal, get arp studs, my friend over heated his 91 gsx(he had a metal head gasket too) and the head broke the studs, very ulgy.

VtecvrsTurbo · 01-25-2006, 04:01 PM

94 octance would be ok....... dont go to high with boost AND compression though.

Minimalitia · 01-25-2006, 04:03 PM

My boost has only hit 17psi. And because its winter i have a nastey fuel cut at 15 psi usually on the normal winter days that we do have. if its colder out then it hits at lower psi.

VtecvrsTurbo · 01-25-2006, 08:08 PM

I read your profile and it doesnt say anything about your fuel. I hope your not runnig that 16g at 15-17 psi on your stock fuel system, you could be running WAY to lean under high boost, hence fuel cut. You will seriously damage your car if you keep it that way. Hope my advise helps.