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I like the multi-layer steel head gaskets. They probably don't make one for that application but I've found they seal compression very well without o-ringing (I either use Yamabond-4 or Gasgacinch as a sealer) and tend to leak much less oil than solid copper. I still use solid copper for my KZ/Z1 dragbikes (and put up with the oil seepage), but go for MLS anytime it is availbable for one of my newer projects. Bob -----Original Message----- From: Rick <gsxr1100@ptw.com> To: Turbo list <turbobike@natvideo.com> Date: Thursday, May 20, 1999 10:33 AM Subject: Fw: [turbobike] Re: SOHC Honda headgasket problem > >----- Original Message ----- >From: Rick <gsxr1100@ptw.com> >To: John C Williamson <john.williamson5@virgin.net> >Sent: Thursday, May 20, 1999 6:25 AM >Subject: Re: [turbobike] Re: SOHC Honda headgasket problem > > >> I would try like john said but I use Yamabond on the head gasket. >> Silicone gasket sealer made things worse than nothing at all for me. >> If that doesn't work then try oringing the cylinder. >> >> Turbo Rick >> 350HP Turbo GSXR1100 Street bike >> Web Site http://www.ptw.com/~gsxr1100/ >> Southern California Timing Association 1998 Fastest Bike of the year >> EL Mirage Land speed Record holder 204.626 MPH >> E-mail gsxr1100@ptw.com >> >> >> > Slightly more seriously, make sure that the gasget is well annealed, and >> > that the surface of the head / block is FLAT and not polished. A >flycutter >> > usually used to machine the surfaces leaves a 'machining' pattern on the >> > surfaces. This 'bites' into the gasket and holds it into position. Make >> sure >> > that the surfaces are fully degreased, and then use a SMALL (I mean very >> > small smear!) smear of silicone gasket sealer (very thinly!) around all >> the >> > bore edges, and oilways. This stops the capilliary effect that actually >> > makes the oil penetrate under the gasket, which allows the gasket to >blow >> > out of position. Try to get stronger studs as they probably lift / >stretch >> > under boost. >> > >> > John Williamson >> > >> > ----- Original Message ----- >> > From: Joe Allan <beak@seaside.net> >> > To: <turbobike@natvideo.com> >> > Sent: 20 May 1999 06:13 >> > Subject: [turbobike] Re: SOHC Honda headgasket problem >> > >> > >> > > Hello All; >> > > Just came back from trying out my supercharged 750 Hondamatic dirt >> > > dragger, goes good but after the 10th run down the track the copper >head >> > > gasket blew :-( Pulling it apart tomorrow....any hints?? >> > > Stock studs only allow 16 pounds torque. >> > > Joe Allan >> > > Vancouver Island >> > > Canada >> > > >> > > >> > >> > >