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cast iron vs. aluminum was: aluminum head for mgb

To: "mg mailing list" <>
Subject: cast iron vs. aluminum was: aluminum head for mgb
From: jmc <>
Date: Wed, 29 Mar 00 10:30:45 -0800
When I ordered a new cast-iron head from British Parts Northwest, it just 
bolted on perfectly with no leaks. I've heard about aluminum's tendancy 
to warp at high heat, but wouldn't expect it to be warped right out of 
the box. I may be a little naive, but I think the supplier of a new 
(warped) head should foot the bill for the machine work. Also regarding 
cast iron's tendancy to crack, the original head on my MGB was over 30 
years old before it cracked. The way I figure it, if I get 15 out of this 
one, I've got my money's worth. I would suggest that anyone getting a new 
cast-iron head, make sure it's a new casting. The rebuilt ones are on 
castings that are 20 years old at best.

67 MGB Roadster
(With a cast-iron head (On the car, not the owner))

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