Pre-2003 engine cases

And they call it progress!!!!!!!!! Might be better off to compare costs of new HD cases + Zippers upgrade VS cases from the aftermarket that are already setup for timken tapered bearings on crankshaft.

Ed Y said:

And they call it progress!!!!!!!!! Might be better off to compare costs of new HD cases + Zippers upgrade VS cases from the aftermarket that are already setup for timken tapered bearings on crankshaft.

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That'll work for the 'A' engine, AFAIK there's currently nobody making Timken style cases for the 'B' model.

I guess I'll worry about that after the "catastrophic failure" of the cases. Unless of course I tear it down after the "catastrophic" cam chain failure.

csoday said:

I guess I'll worry about that after the "catastrophic failure" of the cases. Unless of course I tear it down after the "catastrophic" cam chain failure.

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Crank bearing failure fubared my motor, the Indy shop I know very well has seen several tensioner failures and the latest and greatest a cam bearing failure of a 2005 that took out the entire bottom end. Except the cases of cause. Don't know what your defintion of catastrophic failure is, but a complete rebuild of the lower end caused by sloppy design fits mine just fine.
Now it's in the wording I guess.
When I buy a bike with certain design features, I simply assume that I can get a replacement at least 10 year after the end of the production run and not some watered down, el cheapo replacement.

Well ViennaHog, History does tend to repeat itself. After two factor HD case failure on his shovel, both for crank bearing coming loose in the case, my brother went to S&S to get a better design. Sounds like there is still similar issues with the TC cases.
The more things change the more they remain the same.
Good luck with your new motor Vienna.

Vienna,

Is it back together yet? JK

and lets see oem cases that had problems 82-e84 xl cases, 89-92 evo cases first loose inserts then pinion races and blown timkens and the craking behind the rear lifter block, and now the tc with the straight bearing but i beleive thats a 2 fold problem

JDK20723 said:

Vienna,

Is it back together yet? JK

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Yes, alive and kicking, only a couple miles on it yet. Will take it to the dyno for break in some time in February. Build was uneventfull, minor problems with fitment of cylinders on the case dowels and spiro locks that we did not expect.
As soon as I know more about performance etc I'll post it.

Thanks for checking