Quote:
Originally posted by bb80sc
Don't want to hijack this thread.....but I'm gonna  If one were to replace the stock springs and retainers with race springs and Ti retainers, could the bottom end of a stock 3.0 handle the higher revs? I know there is no reason power-wise to rev higher, but in the event of a missed shift, would the valve train have a better chance of escaping damage? Just wonder if these things would be cheap insurance if doing a rebuild.
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Brad:
The only benefit of installing better springs & retainers in an otherwise stock SC motor would be a greater resistance to valve float if you missed a shift.
Fact: Porsche OEM springs lose some tension over time and the RPM threshold of valve float goes lower as that occurs. Really good springs like the Aase ones and Ti retainers maintain some insurance against piston-to-valve contact when you make a mistake,....
I make the decision about what to use based on the engine's configuration and application. Being a proactive-type person, I like to install the components that will help PREVENT the missed shifts in the first place.