Heavyweight Single Engine Mount
Posted: Sat Mar 02, 2019 6:39 pm
I have a 1958 frame that I am fitting an earlier engine into. So far I have been using a set of empty 1953 crank cases to align everything. So far so good.
Earlier today I decided to see how things are with a complete engine fitted but have found that the bottom front engine mount changed from 5/16" to 3/8" in 1954.
For some reason my 1953 empty cases had this front mount bored out to 3/8" but my complete engine seems to be an unmolested pre-1954 engine with a 5/16" hole. Obviously the frame mounts are 3/8"
I cant be the first to fit an earlier engine into a later frame so what do folks usually do? I have 2 choices:
1. Bore out the engine mount to 3/8" and use a 3/8" stud
2. Make two top hat bushes to reduce the frame mountings to 5/16"
Which of the above would you do or would you do something else? (getting a later engine is not an option)
John.
P.S. At least this narrows down the date of my engine with the unusual number.
Earlier today I decided to see how things are with a complete engine fitted but have found that the bottom front engine mount changed from 5/16" to 3/8" in 1954.
For some reason my 1953 empty cases had this front mount bored out to 3/8" but my complete engine seems to be an unmolested pre-1954 engine with a 5/16" hole. Obviously the frame mounts are 3/8"
I cant be the first to fit an earlier engine into a later frame so what do folks usually do? I have 2 choices:
1. Bore out the engine mount to 3/8" and use a 3/8" stud
2. Make two top hat bushes to reduce the frame mountings to 5/16"
Which of the above would you do or would you do something else? (getting a later engine is not an option)
John.
P.S. At least this narrows down the date of my engine with the unusual number.