The Spanish heads have a step cut in that eliminates the need for the gaskets. Adding the gaskets will reduce the compression ratio. Dennis -----Original Message----- From: Tom Young <young@SHERLOCK.SIMS.BERKELEY.EDU> To: Vanagon@VANAGON.COM <Vanagon@VANAGON.COM> Date: Monday, August 17, 1998 5:53 PM Subject: Re: Shims, sealing rings, etc.
>Several years ago I bought some new heads for my '81. I realize now that >they were probably the heads made in Spain (AMC?). Anyway, they came >with clear instructions that head gaskets were *not* to be used. > >Maybe you have one VW head and one AMC head? > >Can anybody explain why the Spanish heads don't use gaskets? > > > >On Mon, 17 Aug 1998, Harmon Seaver wrote: > >> Just got a pair of rebuilt heads for my '81 2.0L from BusDepot, they >> look good and came quick. However, one has a pair of cylinder shims and >> a pair of head shims -- the other has just a pair of cylinder shims and >> a note *NOT* to use head shims. >> I'm a bit confused. Don't have a Bentley for this engine, only a >> Haines, but it talks about "sealing rings" on the heads. So is the head >> shim in addition to the sealing rings from the gasket set? Seems like >> that wouldn't give the greatest seal. OTOH, the earlier air-cooled >> engines had no head gasket at all, and they did fine. > >--------------------------------------------------------------------- >Tom Young young@sherlock.SIMS.Berkeley.EDU >Lafayette, CA 94549 '81 Vanagon >--------------------------------------------------------------------- |
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