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This was a 2019 post I sent:
Quote:
Happens to less than 1% of S55 engines, so it's really blown out of proportion. You can get an aftermarket fix if you are really that worried.
Any aftermarket fix in the warranty period will void it. Best not to tune it if your that worried until after the warranty has expired.
With everything I've read in the last 2 yrs almost all the spun hubs have not caused valve/piston contact. So its just a labor charge to get in there and replace the hub and re-align the new one.
Now if you money shift the car (6 spd) thats going to be expensive and has nothing to do with a spun hub.
So if less than 1% of the S55's are reporting spun hubs and and only a small portion of those have valve/piston contact..............I'm not worried about it.
Every couple months someone on these boards has to bring up the famed SCH. I think all these threads should be put up in the FAQ Section.
Stay stock-keep warranty
Tune car, lose warranty and don't install a CBC or more elaborate solution.
Tune, lose warranty and add a CBC ( lowest cost partial solution)
Tune, lose warranty and add a expensive modified Keyed Crank Hub.
The one failed CBC car was a 800HP F80/82 monster...I don't have time to find that thread right now
Most of you have a higher % chance of money shifting your 6 speeds vs a SCH...
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