Aluminum Push Rods

[clevtrev]

Specs are unfortunately written in French but I’ll try to translate the basics features for who don’t speak French.
I spoke with the guy over the phone and he is really nice and experienced in Vincent engines I understood (he also used to work with Godet).

Known to a lot of us as `Jivaro`.

 

[bmetcalf]

They look a lot like the pushrods I bought from George Emmerich 30 years ago.

 

[Kansas Bad Man]

Been running aluminum push rods in the liner for 18 years with zero push rod problems. there is only one thing that cools the push rod and that is the oil mist in the crankcase. the aluminum push rod has a larger surface area then the tapered steel push rod , this equalizes the growth length between the two. you can get the necessary run clearance by using a 1/4 inch drill with a cone shaped stone and touch the adjuster concave and the lifter concave until adequate clearance is achieved.

 

[tatty500]

I remember, when we were working on the Bentley engine management, one of the Roll-Royce men said they tried sinilar tubular pushrods on the V8. He found that many of the tubes slowly filled with oil and ended up heavier than steel ones!