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Hairline crack in engine case

gs11ezrydr

gs11ezrydr

Forum Mentor
Sorry to repost. Ray gave me some good info. Just wondering if anything else was out there.While removing and inspecting my clutch a few weeks ago in my 82 GS1100EZ. I noticed a hairline crack in the case where the clutch input shaft goes in to the trans right at the retaining clip groove. I was wanting advice if any one has seen this before with helicut gears and what was the cure .(welding). I have seen it on several drag bikes with helicut gears and excessive thrust clearances. My thrust clearances .0015 are within specs, hardened nut etc. Also is it possible to strengthen this area build it up with a weld. I have a access to an older 750 with straight cut gears and the lower ratio but really can not afford those kind of changes at this time. I was saving them for a drag bike if nesc.
 
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I had the same problem on my Kat 1150, also talked to Ray about it. The C-clip groove was cracked and flapping on one side.
It's now gone. It's such a thin piece of material. There may have been just enough a groove left to leave the c-clip attached to the stock bearing, can't recall if the clip is there or not. The case material on the clutch side of clip has been off the bike for 2 years or so.
 
this is a common problem on a helical gear large CC GS engines.
the basket is pushed towards the clutch cover under extreme use and the clip gets pulled the same direction.
even with an HD basket this happens.
live with it and if you ever have the bottom apart for upgrades then add strait cut gears and all will be fine.
no more side load....
 
Thanks for the replys. Just for the sake of it or (piece of mind) I believe I will rough it up a little and apply a small amount of some high strength epoxy not JB weld and inspect it at a later time and inspect it to see how or if it held up. Apply it with the clip inserted and a c-clamp to hold it till dry. Just experimenting
 
Seems theres a way you could fashion a retainer clip ( out of some mild steel and is stacked up ) that bolts into the hole that would set against the bearing race and trap it...and supply the stability to the bearing and the shaft.
 
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