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Re: [turbobike] Re: SOHC Honda headgasket problem

Dave Morrill (david.p.morrill@fairchildsemi.com)
Thu, 20 May 1999 09:22:09 -0400

Gasketworks, who made my gasket suggested using Permatek  or Permatex aviation
sealer.  It's a black gook type stuff.  I used it on mine and have had no

Good luck,
John C Williamson wrote:

> Try a Suzuki!
> 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
> >
> >