Having had both, my ass in the seat tells me that $ for $ the aluminum head
out performs the steel version.
That is, for the price of an aluminum head the large percentage of us cannot
build a steel head that will perform better.
David Anton might but he would have to throw in his work for free to keep
the cost down if he were to sell it.
Most of us could not do enough of the work ourself or the quality of the
work necessary to make it happen.
The aluminum head performs right out of the box.
My guess is that if you were to buy the steel head on the open market you
will have to pay $1300 to get one that will out perform the aluminum head.
BTW Cap'n Bob my aluminum (Pierce) head uses the same plug as the steel
head.
Larry Miller
----- Original Message -----
From "gerard" <pixelsmith at gerardsgarage.com>
To: "Robert E. Shlafer" <PilotRob@webtv.net>
Cc: "Robert Duquette" <RobertDuquette@Sympatico.ca>; "Spridgets"
<Spridgets@autox.team.net>
Sent: Sunday, August 24, 2003 7:25 PM
Subject: Re: engine health
> Hey Cap'n,
>
> I don't know where you get your numbers from to make this claim, but
> I have recently heard from an extremely knowledgeable and well known
> source that the aluminum head does NOT flow as good as a stock cast
> iron head and that if the extra money spent on the aluminum head
> invested in even mild porting of a stock head with Rimflow valves
> would perform much better. I only recently heard this and was
> surprised myself, but the credibility of this individual I think is
> without question. If you have some factual data to back up your
> claim, I'd like to hear about it.
>
> Gerard
>
> At 9:35 PM -0400 8/24/03, Robert E. Shlafer wrote:
> >Hey, Bob....consider.....
> >
> >That aluminum head is not only
> >lighter, it also flows around 30%
> >better than stock, runs cooler, uses 12mm
> >plugs due to a "centered" plug in the
> >combustion chamber (more even burn
> >across the piston) and comes with
> >hardened seats.
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