| Author |
Message |
    
olderustfarmer
New member
Username: olderustfarmer
Post Number: 1
Registered: 10-2018
| | Posted on Monday, October 29, 2018 - 09:34 am: | 
|
Hello,
I am rebuilding a 3 cylinder 1912 chase truck engine.
this engine is a air cooled 2 cycle model. I need to know what type of tolerances there should be for bronze bushings on the crankshaft mains of which there are 4. These are lubricated by grease cups between each cylinder. I am concerned about loosing crankcase compression between cylinders as well as the front and rear mains. I don't know if I need to replace them or not. They seem sloppy to me. Please help. Gary |
olderustfarmer
New member
Username: olderustfarmer
Post Number: 2
Registered: 10-2018
| | Posted on Monday, October 29, 2018 - 10:13 am: |
|
I forgot to ask if there are sources for these early bushings of brass or bronze? |
jb_castagnos
Senior Member
Username: jb_castagnos
Post Number: 1396
Registered: 07-2002
| | Posted on Monday, October 29, 2018 - 10:35 am: |
|
It depends on the crank size, but for a greased bearing.002" should be close. If they are sloppy it will affect performance. Companies like McMaster Carr and Motion Ind stock standard bearings, odd sizes will have to be custom fit. If you can install a lip seal it helps. |
olderustfarmer
Member
Username: olderustfarmer
Post Number: 4
Registered: 10-2018
| | Posted on Monday, October 29, 2018 - 07:37 pm: |
|
THOUGHT I BETTER TRY TO PUT A PICTURE OR TWO OF MY QUEST! |
