Tropical TR
Jedi Hopeful
Offline
As part of my TR3A engine/head rebuild, I have had bronze valve guides installed. Yes, I read a lot of the threads about bronze guides and the seals. Most seem to prefer the original cast iron guides and no seals. After reading all of the information, perhaps I would have stayed with cast iron as well, but unfortunately the bronze guides were already installed by that time (with 5/16 exhaust valves, double springs and hardened seats).
Positive reinforcement from other bronze guide users would ease my conscience!
I do understand about the additional clearance required to prevent valve seizure and so does my machine shop guy who has a lot of experience with the bronze guides. However, am very interested in knowing opinions about whether or not to use seals with the bronze guides. The machine shop likes them and generally installs them on their numerous TR3/4 rebuilds, but they did ask me if I want them. After reading opinions out there, I would not use them with the cast iron and would keep it original. However, is there more benefit to the seals with bronze guides and the additional gap required for expansion, at least during warm up?
Regards,
Walter
Positive reinforcement from other bronze guide users would ease my conscience!
I do understand about the additional clearance required to prevent valve seizure and so does my machine shop guy who has a lot of experience with the bronze guides. However, am very interested in knowing opinions about whether or not to use seals with the bronze guides. The machine shop likes them and generally installs them on their numerous TR3/4 rebuilds, but they did ask me if I want them. After reading opinions out there, I would not use them with the cast iron and would keep it original. However, is there more benefit to the seals with bronze guides and the additional gap required for expansion, at least during warm up?
Regards,
Walter