connecting rod bearing???

[tconroy]

Is there any other models that have automotive connecting rod bearings besides the 83 650 L? Why did they put these in instead of roller bearings like the chain drive.The L also has a high pressure oil system to keep the bearings lubricated.Why such a change?Just thought I would throw that out there since my bike just turned over 30,000 and hope it last another 30,000 before a have to do anything serious to the engine.

[earlfor]

I believe the 81 750 also has plain bearings.

Earl

Is there any other models that have automotive connecting rod bearings besides the 83 650 L? Why did they put these in instead of roller bearings like the chain drive.The L also has a high pressure oil system to keep the bearings lubricated.Why such a change?Just thought I would throw that out there since my bike just turned over 30,000 and hope it last another 30,000 before a have to do anything serious to the engine.

[Nessism]

All 650G model engines use plain bearings as well as the 450. There was a transition to plain bearings on the larger engines approximately at the time of the transition to 16v heads (except for the 1100 I think).

Plain bearing cranks are the industry standard. Suzuki's roller bearing cranks are a hold over from their 2 stroke days. Personally I think the roller cranks lend an air of uniqueness to the GS bikes. I don't think it matters either way in terms of durability.

[tconroy]

my clymers manual say's that all chain drive models of the 650 have roller bearing crankshafts. The crankshaft main bearings are caged ball bearings while the connectioig rods pivot on caged roller bearings. All shaft drive models have the connecting rod bearings.I just thought it was odd that they are different for the chain and shaft drive models.