I would contact Clements as they probably made those rods, I would also inquire at the same time as to his thoughts on running the bearings on a standard shaft.....the Motorsports cranks were treated/coated as were the camshafts.
I would contact Clements as they probably made those rods, I would also inquire at the same time as to his thoughts on running the bearings on a standard shaft.....the Motorsports cranks were treated/coated as were the camshafts.
I would contact Clements as they probably made those rods, I would also inquire at the same time as to his thoughts on running the bearings on a standard shaft.....the Motorsports cranks were treated/coated as were the camshafts.
I would contact Clements as they probably made those rods, I would also inquire at the same time as to his thoughts on running the bearings on a standard shaft.....the Motorsports cranks were treated/coated as were the camshafts.
I have an old karting article comparing the Tecumseh to the Raptor and in it it does state that Tecumseh was working on Plasma coating the journals that may be the black oxide coating that you see in the later years??? Regardless, I would ask clements if I had the chance, HS/OHH cranks are soft and nobody else seemed to make rods with bearing for them, just to be safe. They may even have been modified (the crankshaft) like the H50 motorsport was to fit the rod/bearing in it I dunno Never owned one of the OHV versions.
maybe to help answer your question markus if a person can run a bearing/rod on a stock Tecumseh cast steel crank. going back on Tecumseh power 356 build. he stated he ran a stock 172cc crank with the bearings/Tecumseh rod. he never use the performance crank that was coated. another good example OND ran bearings/ rod with a stock H70 crank. I even ran a billet briggs/bearing rod on a Tecumseh stock cast steel crank...no problems.
maybe one of the reasons Tecumseh use bearings in the race motors so a guy could rebuild/refresh engine for the next race/season.
delray so far the turned down H60 engine is running good , but I haven't run it that hard yet . Lets face it guys the bearings ( Inserts ) are simply a spacer to get the right oil clearances .
delray so far the turned down H60 engine is running good , but I haven't run it that hard yet . Lets face it guys the bearings ( Inserts ) are simply a spacer to get the right oil clearances .
Well as usual I screwed up the pics line up , so you will have to read between the lines . I'm not really sure Michael was real familiar with the HS engines though . Or If he is like me and forgets sometimes ! lol
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