Tadek -
The ali heads main benefit is reduced weight. Also, they are prepped
for unleaded fuel, although your iron head can be adapted for unleaded
too, for about 90% less cost!
The ali heads on the 100, in my opinion, aren't worth the trouble.
The ali head will be very prone to leaking due to slight warping at
the head surface, even the iron heads have problems with leaking, the
ali heads are worse. You can fix the problem in part by purchasing
the $300 steel head gasket, so it's not just the ali head you have to
pay for if you want to do it right.
If you are racing and you need every edge, yes, otherwise for daily
drivers I'd say no.
On 9/24/08, Tadeusz Malkiewicz <tadeusz.malkiewicz@plusnet.pl> wrote:
> Hello,
>
> I am wondering if anyone has bought the aluminum head from Dennis Welch. How
> is it?
>
> There are also a number of other sellers of the aluminum head - Moss, AH
> Spares and probably others.
>
> Are all these heads the same? Is one better than another?
>
> Is there any performance gain from the aluminum head?
>
> Many thanks for help,
>
> Tadek
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--
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Alan
'52 A90
'53 BN1
'64 BJ8
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