Under 3500NA is meant to be a class within the Kerrick series that is a) affordable b) reliable c) competitive d) enjoyable.
The moment you add a turbo to the equation then you pretty much lose a,b,c & d.
Any 2000cc car with a turbo that is built with the same effort, professionalism and budget as any of the 6 leading cars would be competive in the open class, as is any turbo rotary.
These are the rules so build something to the rules and go and enjoy yourself and stop trying to change (or talk about changing) what is a good thing and can become even better with more competitors.
If you had a class to suit every sports sedan that was built without consulting the rules there would be 120 classes and everyone would win their class.
I cannot see anything significant changing as the rules committee is committed to stabilisation of existing rules.
Phil you imply turbos are not permitted to enter u3500 in the kerrick series yet the regs
as I read them do not agree with what you are saying.
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S4 AUTOMOBILE ELIGIBILITY
Only automobiles that comply with the provisions of one (1) of the following are eligible to compete in the
Series:
(a) Space frame chassis and floorpan Sports Sedans complying with the Group 3D Sports Sedan Regulations as per the 2010 CAMS Manual of Motorsport (Class SS).
(b) Trans-am automobiles complying with A.S.S.C. regulations for North American Trans-am competition (Class TA)
(c) TraNZam automobiles complying with TRG of New Zealand regulations (ClassTNZ).
S4.1 Automobile Classes
Each automobile entered in the Series will be eligible to compete in one (1) of the following classes based on engine capacity as follows:
Outright (up to 6000cc)
Under 3.5 litre (up to and including 3499cc)
S4.2 Replacement Automobiles
Following the commencement of the first practice session of each round of the Series, any automobile that has been entered to compete at that round may not be replaced with another automobile.
