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Re: Parts Help - Re. Lawrie's response

To: "N" <>, "MG Digest" <>
Subject: Re: Parts Help - Re. Lawrie's response
From: "Lawrie Alexander" <>
Date: Mon, 4 Feb 2002 17:55:28 -0800

There's a big difference in the efficiency and heat-dissipation
characteristics of an aluminum crossflow head and a stock cast iron head!
(Isn't that why you laid out the big bucks for the crossflow?). One of the
advantages is that you can run higher compression with the aluminum head, so
your numbers don't surprise me.

British Sportscar Center

-----Original Message-----
From: N <>
To: MG Digest <>
Date: Monday, February 04, 2002 5:36 PM
Subject: Parts Help - Re. Lawrie's response

>I am wondering what kind of gas your customer was using that had so much
>pinging.  I have a Pierce Manifold cross-flow alum. head on my street/track
>B and recently did a compression test.  Found I had from 182 - 185#
>compression.  I don't get pinging except under rare circumstances. And, I
>normally just run 93 octane pump gas.  Once in a while I'll put a few
>gallons of 110 race gas in.
>Norm Sippel
>'66 multi-purpose MGB

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