TeriAnn Wakeman has a web page with a whole gob of information on
TR2-4A heads:
http://www.cruzers.com/~twakeman/TR/tr%20index%20top.html#article
Seems likt good stuff.
Drew
On Mar 23, 6:22pm, Randall wrote:
> Subject: RE: TR3 - Cracked Head
>
> Adrian :
>
> Yes, I'm afraid the practical approach is to get another head. There's one
> on eBay at the moment
> http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=290547341 . Watch
> out for shipping, those things are heavy.
>
> Although it is theoretically possible to weld the crack and put in valve
> seat inserts, the fix rarely lasts for very long.
>
> There were several different head castings used throughout the TR2-4A range,
> but the only major change point was around TS13000E (don't have the exact
> number handy) in 1956. All the heads after that point will interchange as
> complete assemblies. Some time in TR4 production, the diameter of the
> exhaust valve stems changed, and I believe the TR4A head had lower
> compression and smaller inlet runners. But, they will all bolt up to any
> TR2-4A block, and to all manifolds after the change point.
>
> Randall
> 59 TR3A
>
> Adrian Jones wrote :
> >
> > Just got the head back from the machine shop and he had found
> > a crack (in #
> > 4 chamber) between the intake and exhaust. It's a crack that
> > extends into
> > the bevel (for want of a better word) of both valve seats. He
> > is not sure
> > if this had anything to do with the original problem of water in the
> > cylinders, as the water deposits were in #3, but in any case
> > he said it is
> > bad news.
> >
> > What's the deal? Look for another head? Is a TR4 head the same, BTW?
> > Anyone have one for sale?
>
>-- End of excerpt from Randall
--
Drew Rogge
drew@pixar.com
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