I recently asked Wink if it is permissible to
up-size a motor above the maximum allowed for
a particular class and run the Production
class of the new motor size (assuming you
otherwise meet all the Production criteria --
i.e., it "appears identical" to a showroom stock
vehicle). I thought this was an interesting
question and did not seem to be addressed in the
rules. I can see both sides of the issue and
just wanted clarity.
So as not to keep you in suspense, his answer was
simply no, without a lot of explanation or
justification.
Any thoughts on this?
Below is my original inquiry and his reply, in
full:
Mark's inquiry:
"I have a rules interpretation question regarding Production rules for motorcycles. I hope I am addressing this to the right forum. If not, please forgive me and forward this to the correct person.
"Can one take a truly stock bike (assuming otherwise meeting all the Production criteria), and bore and/or stroke the motor to above the original class limit displacement and run in the next higher class? To give you a specific context for the question, I have a Cagiva Mito 125cc bike that ran to a record in P/P125 class at Speed Week this year. I am considering installing a commercially available bore kit that will increase the motor size to 163cc and running it in P/P175 class. This is an aftermarket kit, not made by the manufacturer and never available as a dealer option. The kit is, however, based on stock parts (molds?) and is "identical" in outward appearance to the stock barrel and head.
"This would seem to be permitted by the rules, but since the bike was never produced by the manufacturer as other than a 125cc, I had some lingering doubt and just wanted a clarification. I hope I have given you all the information you need to address this question. If not please feel free to contact me at this email address for any additional information.
"Thanks for your attention to this, and I look forward to your answer."
Wink's answer:
"you will not be able to run that combo. sorry."
