Larry Herman

Yeah but perhaps you didn't read the PCA Club Racing rules properly. No internal modifications of the engine, none, zip, nada, even if there is no performance advantage. It clearly states that if it isn't listed, it can't be done. Personally, I would not want to miss an opportunity to make the engine more reliable when I had it apart either, but rules is rules. Just don't ask me if my old Carrera motor was rebuilt absolutely stock, of course it was.

Chaos

I found a stock S2 block.
Thanks,
Gregg

Alan C.

On the idea of impregnating the bore with silicon with felt pads, I don't think it is going to happen. The 'Silicium' which is German for silicon will remove flowed aluminum from the surface. The realatively soft aluminum would partialy cover some of the free silicon in the matrix after machining. It is somewhat like a vibramet polish. The silicium polish leaves the harder free silicon particles in relief.

I have a hard time believing that one could force silicon with felt into the substrate in any quantity that would adhere in a combustion chamber. On the other hand silicon will disolve in aluminum at about 1300F even though silicon melts at a much higher temperature. That silicon is fully trapped in the eutectic phase.

Just looking at the technical side.

David Floyd

How much you want for the old block ?

Chaos

It is already gone !

Geo

And perhaps you didn't read the rules correctly. I know what cross-deilled is. It doesn't matter one iota that it didn't change the weight of the crank and/or that it's for better oiling. It's still very much illegal. Performance benefit is not a criteria for determining legality.