Would this be a recently manufactured car? Or something which is pretty old and
the original
pistons are no longer available so it is being replaced with something that IS
available?
I would think that if the manufacturer changed the specified part in the stock
configuration of
a car, it would be accompanied by a TSB (technical service bulliton). If there
is a TSB then
I would say it is legal, otherwise I might question it.
You aren't refering to the oil consumpion fix on the 2001 Z06's are you? I'm
sure those fixes/
changes are well documented by Chevy, including a TSB.
my $.02....
Scott Troyer
Snake River SCCA
dave2020@mindspring.com wrote:
> All,
>
> I have recently become aware of a possible situation with Car X (no, it's not
>mine). I haven't verified the facts, so let's just play the hypothetical game
>for now.
>
> Car X came from the factory with a given compression ratio. The factory
>replacement is now a different piston that bumps the CR significantly. So, say
>driver Y puts these pistons in his Stock class car. A CR test will show that
>it is above what is in the factory manual, but a new part comparison will show
>that the piston is legal. Which takes precident, the factory authorized
>replacement statute, or the stock Compression Ratio Statute?
>
> I know the pistons in question bumps the CR. What I haven't verified myself
>is the factory replacement issue. The info did come from a reliable source
>though.
>
> So, how is this handled in protest?
>
> Thanks,
> Dave Hardy
> 89 SM
> DILYSI Motorsports - Drive It Like You Stole It!
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