[TR] engine "upgrade" was final update

["Paul Dorsey" <dorpaul@negia.net>]

Hello Bob et al,
You talked about sensing a "sure upgrade"  in the performance of your TR4 
over your 3.  I'm curious, what engine improvements were actually made to 
the early TR4's from the late TR3's?

Thanks,
Paul Dorsey
5th year of a 6 month rebuild of a 60 TR3 with a TR4 engine (never driven 
this abandoned project!...yet!) 


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