Hi Ray--
I replaced the iron head on my 100 abouyt ten years ago with a DW "Fast
Road" version after it developed several cracks. I also got the matching
tubular header. The headers required a bit of fitting as does most
everything but otherwise it was a matter of turning nuts and bolts, etc.
I have had no problems and performance is very good.
Best--Michael Oritt
1954 100 LeMans
On Sat, Nov 1, 2014 at 3:44 PM, Larry Varley <varley@cosmos.net.au> wrote:
> Hi Ray, my personal opinion is that unless there is a problem with your
> iron head don't bother. You probably won't see any noticeable performance
> increase and any small weight saving or improvement in heat dissipation
> really would not be worth the money. The original Weslake design works very
> well, and modifications to the original ports and combustion chamber design
> can easily lead to no improvement or worse performance at lower speeds.
> Stay away from Webcon in the UK at this stage as they were making an
> Austin A70 commercial head thinking it was Healey. I don't know if they
> have changed it yet. The A70 commercial head had smaller and deeper
> combustion chambers and with the Healey sized valves they were fitting had
> shocking valve masking. I would not be paying extra for a Denis Welch head
> for a road car, so any supplier that can supply a faithful reproduction of
> the original should be ok.
> As a matter of interest "Head Stud Developments" here in Australia are
> also in the process of making a 4 cylinder alloy head, but I think they are
> not quite ready for sale yet.
> Regards
> Larry Varley
> BN1
> BT7
> Nash Healey Lemans Coupe x 2 :)
>
>
> I am thinking about an alloy head for my 100. This is a request for list
> wisdom on several issues. I'm thinking "fast road" as I have a 3/4 cam.
> What make / supplier, about what price, what has been your experience with
> one, what else should I be aware of? Are there any pros or cons involved
> here. Thanks Ray Juncal _______________________________________________
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