Timing tensioner differences

[Flade]

While doing the PI head upgrade I noticed that later model modular motors (2001+) use a different tensioner than the earlier 2V motors. The early motors had machined cast iron tensioners while the later tensioners are plaster with a molded silicone gasket built in. Fel pro sells a gasket kit for the later tensioners to address leaking gaskets. I don’t see anyone selling gaskets for the early style. It appears that the two style are interchangeable though.

Does anyone have information about the differences? Is one style better than the other? Do we use the new style since they mount on the heads and we want to match the new heads?

 

[lwarrior1016]

While doing the PI head upgrade I noticed that later model modular motors (2001+) use a different tensioner than the earlier 2V motors. The early motors had machined cast iron tensioners while the later tensioners are plaster with a molded silicone gasket built in. Fel pro sells a gasket kit for the later tensioners to address leaking gaskets. I don’t see anyone selling gaskets for the early style. It appears that the two style are interchangeable though.

Does anyone have information about the differences? Is one style better than the other? Do we use the new style since they mount on the heads and we want to match the new heads?

Don’t use the plastic ones, they are prone to fail along with the gaskets. Use the iron tensioners, they do not use a gasket. Just a machined surface seal.

 

[Flade]

Don’t use the plastic ones, they are prone to fail along with the gaskets. Use the iron tensioners, they do not use a gasket. Just a machined surface seal.

Thanks, that seems to be the consensus. Expensive little buggers…$50-70 each.