Posts : 420 Join date : 2010-08-20 Age : 36 Location : West Bend
Subject: head gasket bore question Sun Oct 24, 2010 11:42 am
Hey everyone I was looking to buy a cometic head gasket I hear good things and bad things so ide like more input. and is it safe to run a 90.mm bored gasket when the stock bore is 89.mm? my motor was rebuilt but im not sure if it was bored over since it was a oem rebuild so im guessing its 89mm. my plans are to turbo it later on so i want to make sure the head can handle it. any info? please and thanks!
600SX Admin
Posts : 2514 Join date : 2010-08-19 Age : 43 Location : Twin Lakes
Subject: Re: head gasket bore question Sun Oct 24, 2010 3:42 pm
I don't see a problem w/ a larger gasket opening, especially 1mm. If it were smaller than the bore I'd say no, but I wouldn't see any issues.
j240sxxx Senior member
Posts : 420 Join date : 2010-08-20 Age : 36 Location : West Bend
Subject: Re: head gasket bore question Sun Oct 24, 2010 4:34 pm
see thats what i thought but then i hear about that little space between the head and block will be empty space and more likely the piston push air or whatever into it putting pressure on the gasket and possibly cracking the seal.. does this make sense or am i just thinking too much?
600SX Admin
Posts : 2514 Join date : 2010-08-19 Age : 43 Location : Twin Lakes
Subject: Re: head gasket bore question Sun Oct 24, 2010 4:37 pm
Not in .5mm, I wouldn't think.
VNG704 Senior member
Posts : 285 Join date : 2010-09-17
Subject: Re: head gasket bore question Tue Oct 26, 2010 9:22 am
I have a 87mm on my stock SR with no probs. Just make sure you follow torque procedures. Copper spray will help the seal too.
j240sxxx Senior member
Posts : 420 Join date : 2010-08-20 Age : 36 Location : West Bend
Subject: Re: head gasket bore question Thu Oct 28, 2010 7:56 am
Sun Oct 24, 2010 11:42 am
