R-Classes News

A link to the Press Release: http://www.fia.com/en-GB/mediacentre...sc_031110.aspx

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Originally Posted by ProRally

YES, the news is in :

"RALLYING

From January 2011 a new Group R4 category will be created. A kit, homologated by the manufacturers of current Group N cars, will be made available for these 2-litre turbo Group N cars to ensure they can remain competitive with the Super 2000 cars.

But it does not say anything on what the kit can consist of, and limitations. So has the manufacturers been given more details then ?

To increase competition and the spectacle in all FIA Rally Championship events, the WMSC has agreed to the principle of studying technical regulations which may potentially permit GT cars to compete in these events."
This is perfect, but how long will they study for before they decide, are they aiming for 2012 ?

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The easy solution for GR N is to map them for E85 and that alone maybe match them with S2000.

e85 would be good/cheap but i am aware that fia is not going to make it cheap.Motorsport industry needs money.Have a better look here....'''will be created. A kit, homologated by the manufacturers '''

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Originally Posted by Sulland

The easy solution for GR N is to map them for E85 and that alone maybe match them with S2000.

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I don’t know how you can justify that. The N4 is behind S2000 in performance and by lowering the octane rate for N4 they will be even more behind. Lowering the octane rate means that you have lower the boost to prevent detonation, which means less power.

E85 has octane number 104 according to commonly used RON method.

A book I have says that MON 85 compares to RON 92. I don’t know if MON 85 is same as E85. To have RON 105, the MON would be 95. But I suppose you know better.

Racing gasoline is RON 102/MON 90. E85 is RON 104/MON 94.

Thanks Mirek. They’re both very close but I’m convinced that the racing fuel has better knock resistance and changing the fuel to E85 wont get the N4 par with S2000.

Is it true that no more S2000 homologations are being given by the FIA?

ie to phase that category out?

No, they continue, only with new 1.6T engine. Otherwise rules are same.