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RE: 1098 Questions

To: "David Ramsey" <dwramsey@worldnet.att.net>
Subject: RE: 1098 Questions
Date: Mon, 4 Aug 2003 19:53:58 -0700
Cc: <spridgets@autox.team.net>
References: <000201c35aec$95888640$7c61510c@HAV004>
Doh!... That's right... well these days I don't even know where my 
own pockets are... thanks for catching my error.

Gerard

At 5:57 PM -0700 8/4/03, David Ramsey wrote:
>Gerard,  The pocket has to go in the block and not the piston as the
>valves in the 1275 head will hit the block without the pocket.  Also you
>must use the 1275 head gasket.
>               Crash
>
>You can put a 1275 head on a 1098, but I believe it
>requires some pocketing of the pistons for valve clearance. A 1098
>head, typically a 12G295 has 1-7/32" intakes and 1" exhaust. A 1275
>head is 1-5/16" or 1.4" intakes and 1-5/32" exhaust. Chamber size is
>quite different with 28.3cc on a 1098 and 21.4cc on a 1275.
>
>I don't think there is any difference between end plate gaskets,
>though the back might be slightly different for the oil pump opening.
>
>Gerard

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