Michael D. Porter wrote
> ... but I don't, and can't find the difference in the factory TR4
> manual, and don't have a TR6 manual handy. What's the difference between
> early TR4 and later TR4/TR4A exhaust valves, and early and late TR6
> exhaust valves? Reason I ask is that Vicky Brit has Stellite exhaust
> valves on sale, and I'd like, in each case, to pick up the larger of
> each type. Seat and guide differences are not an issue--I can press in
> the right guide and machine the valve seats as necessary.
>
> Cheers, all.
Michael,
TR4/4A..........Moss UK catalogue states that early TR4 exhaust
valves have 3/8" stems whereas later 4/4As have 5/16" and tulip-
shaped heads .The external diameter of the guide is also different
but a conversion guide exists .Springs and collars are also different
.
TR6....dunno ! Modern cars are not my thing .
Cheers
Mike Kitchener
60 TR3A TS 75178
|