CTCRC Pre-93 regs subset

[johnw]

By popular demand - well from Al anyway
this is an extract from the draft regs for 2007.
Full regs available soon, but note that these are the main changes from 2006.

Just to be clear, they are still draft, but I'm not expecting anything to change.

5.2.1 Cars will run in five classes based on production capacity:

Class A Over 2989c
Class B 2501cc to 2989cc
Class C 2001cc to 2500cc
Class D 1601cc to 2000cc
Class E Up to 1600cc and cars fully compliant with the CTCRC Production BMW Championship regulations

The following rules will also be applied cumulatively;
• Forced induction is subject to an equivalency factor of 1.7
• Rotary engines are subject to an equivalency factor of 1.8
• Rotary engined vehicles will move up one class
• Naturally aspirated cars 2000cc and over, with 2 valves per cylinder are subject to an equivalency factor of 0.8.

The Ford Cosworth Sierra may run in Group "N" spec (details on request) and with an intake restrictor of 36mm.
Cars with a number of injectors in excess of the number of cylinders are not eligible for this series. The E36 M3 EVO, Nissan Skyline and Escort Cosworth or components homologated for these vehicles are not eligible for this series.


5.12 Wheels and Tyres:

5.12 Wheels:
5.12.1 Road wheels must be no greater diameter than the original diameter plus 2” to a maximum of 18”, fastened to their hubs by the original number of studs/bolts. Centre locking wheels and their hubs are prohibited. Material is free.
However, an original diameter wheel must be able to be fitted to the hub, as and when required. This effectively precludes the fitting of brake systems which are a larger diameter than the original wheels will allow.
Competitors must supply an original diameter wheel on request.

Maximum permitted rim widths are:
Class A 9.0"
Class B 9.0"
Class C 8.0"
Class D 7.0"
Class E 7.0"

5.12.2 Tyres
The control tyre for the series is the Toyo R888.
Dunlop Formula 'R' D84J tyres will also be eligible.

5.15 Weights:

Minimum weights
Cars built between 1983 and 1992 (inclusive) - The published Kerb weight minus 10%. This includes the driver, normally seated with racing overalls and helmet only.

Cars complying with CTCRC Post Historic Touring Car regulations, CTCRC Group One Touring Car regulations or CTCRC Production BMW regulations – at the weight determined in their specific championship

Kerb weights will be determined by reference to the Glass’s Car checkbook, or by committee sourced reference material. The committee’s decision is final.
These are true minimum weights with no tolerance and all cars must comply at all times. Ballast is permitted to achieve these minimum weights but weight may only be removed within the limits of the modifications detailed within these regulations. Ballast must be securely attached within the habitacle and attachment bolts predrilled for the purpose of attaching scrutineers wire seals. The total weight of ballast carried, must be declared in the scrutineering log book and be in position at all times during practice and racing. All cars must comply with these weight limits irrespective irrespective of the year of manufacture and any other championship regulations or waivers.

[greenamex2]

Originally Posted by johnw

5.2.1 Cars will run in five classes based on production capacity:

Class A Over 2989c
Class B 2501cc to 2989cc
Class C 2001cc to 2500cc
Class D 1601cc to 2000cc
Class E Up to 1600cc and cars fully compliant with the CTCRC Production BMW Championship regulations

The following rules will also be applied cumulatively;
• Forced induction is subject to an equivalency factor of 1.7
• Rotary engines are subject to an equivalency factor of 1.8
• Rotary engined vehicles will move up one class
• Naturally aspirated cars 2000cc and over, with 2 valves per cylinder are subject to an equivalency factor of 0.8.

So, a 2000cc Pug 205 will run in the up to 1600 class where as a 1999cc Pug 205 will run in the up to 2000cc class!!!!!

That strikes me as just a little bit odd!

[Ali Rushforth]

would it not run in the up to 2000cc class as pug made a 1999cc version.

However, and this is just an example, could you take a Mk3 fiesta 1.1 and drop a 2000cc zetec engine in and still run in the lower class (up to 1600cc)??

or, is it a case of I could take my fiesta RS1800, get the engine bored to a 2100cc and still run in the up to 2000cc class??

[greenamex2]

Originally Posted by Ali Rushforth

would it not run in the up to 2000cc class as pug made a 1999cc version.

However, and this is just an example, could you take a Mk3 fiesta 1.1 and drop a 2000cc zetec engine in and still run in the lower class (up to 1600cc)??

or, is it a case of I could take my fiesta RS1800, get the engine bored to a 2100cc and still run in the up to 2000cc class??

I thought the classes were based on actual capacity, not original?

[Tim Wilkinson]

Maybe it needs to be changed to 2001cc, then? And state that it's based on production capacity?

The current regs state that crank must retain original stroke, and overbore is limited to .065" and classes are based on production capacity. So those 2.1l 205s aren't allowed - they'll have to revert back to being 1905cc and then aren't eligible for the 0.8 equivalency factor. (even with a legal overbore).

Cheers for posting these up, John. It's put my mind at rest that my car is still legal. I'm glad that the -10% weight includes the driver.

[andypipe]

Originally Posted by teej

The current regs state that crank must retain original stroke, and overbore is limited to .065" and classes are based on production capacity. So those 2.1l 205s aren't allowed - they'll have to revert back to being 1905cc and then aren't eligible for the 0.8 equivalency factor. (even with a legal overbore).

There is gonna be a lot of places they wont be able to go legally

[Al Weyman]

John spoke to me about the 80% bit as I undersatnd it it only applied to cars over a certain capacity and not across the board or it would throw up too many odd configurations, not sure if that is still the case maybe he can confirm and if so what is the cut off point. Personally and although I know the thinking behind it I do have reservations about the complexity of the 80% rule but as racing these days is watched by on man and his dog and that has to stay in the carpark, I doubt it matters what Joe Public think.

Sorry I'm a dumbass, he has explained 2000cc and under does not apply.

Oh remember as well the club do require an engine sealing facility and do check so anyone thinking of stretching those engines out a bit :-)

As 19 stone racer I welcome the weight with driver, good, fair move.

[greenamex2]

For all it's potential 'discrepancies', it makes more sense than a blanket jumping up of classes for multivalves.

It will be interesting to see how it works out.

[Tony Crossley]

Where can I find a copy fo the full regs, and is pre '93 in reference to the actual cars registrsation date, or refers to when the manuafacture began to make the model. IE: if the car was released in '92 but the actual car used is registered 1993 - is it ineligible?

[Tim Wilkinson]

'06 regs here - http://www.classictouringcars.com/pages/techregs.asp

Pre 93 Touring Cars" are four seater saloon cars marketed before 1st January 1993, of which more than 5000 examples were manufactured in any 12 month period during the overall production run and/or were homologated by F.I.A. for competition in Group N category for production cars, prior to that date. Cars not homologated in Group N may be eligible subject to committee approval.

[Ali Rushforth]

In which case my car isn't eligable as it's a four seater hatch back?!

[Al Weyman]

Whats the problem Ali, was the pre 93 model a 2 door or what, what car is it?

[Tim Wilkinson]

It's a hatch-back and not a saloon

[Ali Rushforth]

blonde moment!!!

[Al Weyman]

Well thats all right of course it is, the term saloon car is used to differenciate from a sports car like an MG, hatch backs are saloons in the real sense of the word.

[Ali Rushforth]

Cheers Al, I imagine there might be a few cars coming over from the castle Coombe Salloon Championship as cars now nee to be post '95 to race with them, hence I'm looking for a home for my car.

[Al Weyman]

Good, its just came at the right time then!

[Ali Rushforth]

Seems to have!! Just been looking at some lap times from brands and my boggo engine seems to compare quite well!!

[Tony Crossley]

Originally Posted by teej

'06 regs here - http://www.classictouringcars.com/pages/techregs.asp

Cheers, my car won't be elegible -what with it having 2 doors and not being a saloon. Doh!

[Al Weyman]

What are you guys on about, of course a two door or hatch is eligible, last time I checked my Camaro had two doors and the black one is a Hatchback as well you silly billys! JohnW get yer ass back on here and tell em will you :-).

[johnw]

As you command o wise one. Thanks for holding the hordes at bay
Two door hatches most welcome.

[Tony Crossley]

Originally Posted by Al Weyman

What are you guys on about, of course a two door or hatch is eligible, last time I checked my Camaro had two doors and the black one is a Hatchback as well you silly billys! JohnW get yer ass back on here and tell em will you :-).

LOL, I think calling an RX7 a 2 door hatchback may stretch the spirit of the rules a little.

[Tim Wilkinson]

It raced in touring cars in period, though, and Stacy has used his in pre-93. Equivalency factors for rotary engines are written into the regs, so unless the club is expecting a 1960s NSU or an RX3 (apologies if they aren't rotary) to turn up then I can only imagine that is aimed at the RX7s.

The equivalency factors for the later twin turbo cars means you'd be in Class A, if my calculations are correct.

[Al Weyman]

What car do you want to race Tony?

[johnw]

Late model twin turbo RX7 by the look of it Al. No problem.