mfg Posted December 5, 2020 Report Posted December 5, 2020 Crankshafts used in the R2 Studebaker Avanti engine are the same cranks used in the R4 Avanti engine......True?
r1lark Posted December 8, 2020 Report Posted December 8, 2020 (edited) False...................... Edited December 8, 2020 by r1lark
mfg Posted December 8, 2020 Author Report Posted December 8, 2020 27 minutes ago, r1lark said: False...................... False is CORRECT!
r1lark Posted December 10, 2020 Report Posted December 10, 2020 Do we know the exact differences between a standard 289 crank and the R3/R4 cranks? I've seen comments that the counterweights were a little larger, and the fillets on the journals have a larger radius (I think Alan posted that way back when), and also the journal sizes were slightly different to provide slightly more bearing clearance.
studegary Posted December 10, 2020 Report Posted December 10, 2020 23 minutes ago, r1lark said: Do we know the exact differences between a standard 289 crank and the R3/R4 cranks? I've seen comments that the counterweights were a little larger, and the fillets on the journals have a larger radius (I think Alan posted that way back when), and also the journal sizes were slightly different to provide slightly more bearing clearance. What Studebaker stated upon release of the R3; "Magnafluxed crankshaft of rugged construction, bearings fitted with extra clearance."
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now