I think that the earlier heads are also missing the the port for the EGR valve.
dstauffa@csc.com wrote:
> Ken,
>
> I have done some research into this area and have found the following:
>
> All heads will fit on any block. The big difference is in the port layout.
> For the American market, the 1969 - 1972 head a
> unique port spacing. All PI heads and later US (1973+) had similar port
> layouts.
>
> Of course the head height varied inversely to the compression ratio.
>
> Hope this helps you.
>
> Dave,
> San Diego
> 1970 TR6 PI RHD CP51649
> _______________________________________
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> \ I N J E C T I O N /
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>
> kbrown@trmx3.dot.ca.gov on 11/19/97 01:52:59 PM
>
> Please respond to kbrown@trmx3.dot.ca.gov
>
> To: triumphs@autox.team.net
> cc: (bcc: David J Stauffacher/TMG/CSC)
> Subject: TR 250/TR5/TR6 Head differances
>
> I was doing a little research on the head differences on the TR 250, TR 5,
> and
> TR 6 and if anyone could shed more light on the subject. I'm particularly
> interested in the different in the US market cars as compared to those of
> the
> UK and those exported to other parts of the world.
> Thanks in advance,
> Ken
> TR 250 in California
--
Roger Helman 71 TR6 CC67866L
Digimation Inc. http://deepthought.digimation.com/rogerh/
New Orleans La.
www.digimation.com
Voice. 504.468.7898
Fax. 504.468.5494
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