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[TR] TR6 heads - how to tell which one?

To: triumphs@autox.team.net
Subject: [TR] TR6 heads - how to tell which one?
From: Steve Myers <mountainunicycle@yahoo.com>
Date: Sun, 23 Apr 2006 15:34:03 -0700
Anyone know if it's true that the 'swept' intake manifold (verus the  
'square' one) is only compatible with the later TR6 head with wider  
port spacing? More specifically, is there a definitive way with the  
engine assembled to tell if you have the earlier or later head?

I'm *finally* undertaking an engine rebuild on my '71 TR6 (the stars  
have finally aligned--garage, money, and time! And sold the GT6 to  
keep efforts focused...), and I'm doing the convenient engine mods to  
get a bit more power. I'm converting to a dual pipe exhaust,  
increasing compression to 9.25, adding Goodparts GP2 cam. I was  
thinking about converting to the later head to go with swept intake  
runners since I'll be rebuilding the head anyway, but then realized  
a) I'm mistaken with what the swept manifold looks like, or b) that I  
must already have the later head?? Pics here if it helps:  http:// 
photos.yahoo.com/mountainunicycle

Thanks.

Steve
'71TR6


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