[Fot] TR4 head milling

[TeriAnn J. Wakeman]

Just a comment or two from my archives:

According to Ken Gillanders, the stock head measures between 3.325 and 
3.330 from the valve cover gasket surface to the head gasket surface. So 
be sure to check the head height in case they head had previously been 
shaved. When the head casting was changed to include a diagonal flat 
section on the underside of the lower thermostat housing the thickness 
of metal between the bottom of the head and the internal water passages 
was increased. So I suggest not shaving the earlier heads with rounded 
lower thermostat housing beyond surfacing shaves.

> *From: *Tony Drews via Fot <mailto:fot at autox.team.net>
> *Sent: *Saturday, April 6, 2024 1:50 PM
> *To: *GREGORY THOMPSON <mailto:thompsong at prodigy.net>; FOT Triumph 
> <mailto:fot at autox.team.net>
> *Subject: *Re: [Fot] TR4 head milling
>
> Working with my dad (uncle jack) we considered 0.130 to 0.150 "normal" 
> to mill, 0.190 to be where it started to get dangerous.  That said, 
> there is some variability from head to head on where the internal 
> water passages are.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20240406/4b1448d6/attachment.htm>