Introducing Modern Sports Cars

[MattR]

I Gotta say well done - sounds like a great initiative

I have a question please regarding car eligibility. Would a 1994 NA8 Clubman with an aftermarket turbo be eligible for this class of racing? If I am reading and understanding the Modern Sports Car Regs correctly, the answer should be yes?
- The car itself is an eligible model (94 MX5)
- The car's modifications meets CAMS 2B requirements (when paragraph 1.2 is excluded)
- if 1.2 had been included it would fail, as 94 clubman was never factory turbo?

Could you please clarify, have I understood the requirement below correctly?

Thanks in advance for your help with this.

Cheers,

Rod

Vehicles that are on the list of eligible
vehicles need to comply with the current CAMS 2B
or 2F rules as published by CAMS, with the exception of the following
sections which are not relevant:
•
2F Paragraph 1.2
•
2B Paragraph 1.2

No. The paragraphs 1.2 relate to the eligibility of certain vehicles. If the vehicle is not on the eligibility list in the appendix, then you can't run. So no a turboed clubman is not eligible. This is to stop the Honda powered loti playing, as there were not 100 made and registered. If you built the car as an SP or SE replica, to the rules, that is standard turbo and inlet and exhaust manifolds then that is eligible if on the list.

For my car I can build a Nizpro 200SX-R for 2B as it is an eligible vehicle on the cams list. For this series, because only 13 in various specs were made it is not eligible so I can only build the car to the standard Nissan spec, that is T25 turbo and standard manifolds.

[greenMachine]

A critical issue will be the determination of eligibility. The series needs one eligibility officer to ensure a consistent approach, although that raises practical problems. Maybe a couple of assistants working with one decision maker?

The need for this is evident from the questions being asked in the other thread, and the sooner the better.

[MattR]

I don't think it will be hard to enforce. The list of eligible models is listed in the rules and on he web page, the rules are also set out to be as per cams 2b and 2f rules. The preambles for both sets of rules lay out the general requirements, if it isn't specifically allowed then you can't do it.

[greenMachine]

I don't think it will be hard to enforce. The list of eligible models is listed in the rules and on he web page, the rules are also set out to be as per cams 2b and 2f rules. The preambles for both sets of rules lay out the general requirements, if it isn't specifically allowed then you can't do it.

I agree, to a point. If everybody reads the rule book, and interprets it the same way. It is obvious from the other thread this is not happening though, and with new people coming in that is to be expected.

But the point is that ANY series needs a person who interprets the rules, and is the arbiter of what is in and what is out. That gives confidence to all that if they ask a question, the answer will hold. For them, and for everyone else.

My 2c.

[NitroDann]

I think the forum provides a place to document what is and isnt allowed, if the guys running this can answer here and the other forums the questions asked about specific interpretations of rules then no one can argue the answer will just be to consult the forum relating to you rmodel of car right ?

Dann

[reggie]

Thanks for the info guys - much appreciated

Cheers

[Magpie]

When the power to weight is calculated for a modified car what weight will be used?

For example my NA6 has a red book weight of 950kg, however due to mods it will have to move from class C. So when the power to weight is calculated, is the 950kg value used or its actual weight which is 1,100 (includes a 1/2 full tank and all fluids as well as 90 kg for the driver)

The difference would be at 1,100 kg the max HP would be 220 however at 950 it would be 190 HP? Whilst I doubt that the engine will make 190 I would just like some clarity on how it will be calculated.

[MattR]

The power weight will be as per the rules set out in the docs, not as per the CUE series. So if you drop the weight by more than the allowance then you move up a class. Being a 2b car, and not reading the docs in front of me, you should be ok for any engine mods that are legal other than stroking the engine, which then may put you up a class if you exceed the allowances, again in the modern sports rules. Remember, whilst based on the cams rules for 2b and 2f there are some subtle differences for this series that are covered in the documents on the website.

[Magpie]

Thanks. I'm slowly digesting the rules and the differences. I will plan that it will be the redbook weight that will used for any planning calculations.

[mr2 spyder]

So does this mean if you go under weight and over engined powered you jump two classes?

[Magpie]

The way I have read it yes you can go from class C to A, hence my question. If your weight goes too low and so your power to weight drops possibly into the next class. However any power to weight below 5 can not compete.

However stand to be corrected on my reading of the rules and I'm not looking to exploit a loophole

[mazmad]

Seems to have gone quiet on this, nothing on Wakefields website

Will there be other categories racing over the weekend as well?

[mx5racing]

Interest in this event has been encouraging and we are all looking forward to see the turn out.

We are just finalising the entry forms and these should be out in the next few days. I will post a link to them here and they will also be available on the http://www.modernsportscars.com.au and Wakefield Park websites.

I understand quite a few Queenslanders are coming down in a wide array of different cars and a couple of the Victorians are making the trip to race both MX5's and 944's.

As for any other categories running, you will have to speak to Matthew at Wakefield but I understand it will be a big weekend as it includes the AASA State Championships.

[motomenace]

1500 na mx5s were produced with a "factory" turbo setup.
Mazda contracted a uk company to manufacture oem turbo kits. They had cast manifolds similar to avo. and used t25 turbos. Mazda also gave the normal warranty on these cars. Ill try find the link for it. They were only done on clubman models also. However they were never sold in Australia
But mazda has technically done a production na8 turbo mx5!

[motomenace]

BBR MX-5 Turbo
Brodie Britain Racing (BBR) of Brackley, United Kingdom, have had a long history of involvement with the first generation (NA) cars in the UK, having supplied parts and equipment for a dealer supplied BBR Turbo version of the car between 1990 and 1991. This raised power output to 150 bhp (110 kW), and produced 154 ft·lb (209 N·m) of torque. The kit comprised 68 parts and was covered by a full dealer warranty. They were supplied and fitted to around 750 UK spec cars, including for the 1991 'Le Mans' special edition, with a further 150 kits being supplied overseas.[7]
Two decades later in 2011, BBR now offer a turn-key refurbishment package for old NA MX-5's, again including a turbo charger kit. This now increases power output to 220 bhp (160 kW), and produces 175 ft·lb (237 N·m) of torque. The estimated top speed is now 140 mph (230 km/h), with 0-60 approached in 5.5 seconds. The turbo charger used is the Garrett GT25 ball race unit, and the package also includes an air-to-air intercooler, and a digital piggy-back ECU to control timing, fueling, and boost pressures. Subject to a satisfactory donor car, the refurbishment and turbo upgrade package includes rust treatment, a paint respray, new seats, wheels, and other trim. As of January 2011 the cost for a 'refreshed' BBR MX-5 Turbo is £7,500.[13]

Got some info wrong in previous post. Heres the extract i found from miatas history