Quote:
Originally Posted by KA
IIRC the turbo would also have had to run heavier than the Atmo version- Group A employed a form of equalisation based on linking engine size to minimum weight and tyre size, with an engine size equalisation factor (the 1.4 multiplier) for turbo cars- so a 4.9 litre Holden Commodore would always have a higher minimum weight than a 2-litre turbo RS500
http://homepage.mac.com/frank_de_jong/Pages/part5.html
The Supra turbo, treated as a 4.1 litre car was therefore looking at a minimum weight of 1255kg (1260 for 1988) compared to the 1035kg of the 3-litre (reduced to 1020 for 1988).... |
I often forget about the 1.4x factor (I always multiple by 1.7).Do you know if the 1.7x rule was applied for the calendar 1988 ,starting Jan-1-1988? Following the 1.7x rule ,Supra turbo will be 2954.2 x 1.7 = 5022.14 cc or 1400KG -> it would've been madness for RAS to use turbo cars in 1988.
Also on the weight subject ,are we sure that the "frank_de_jong" link that you gave me has the correct displacement to minimum weight relation table? I was also always using it as 100% correct ,but now I have some doubts - the other day when I was looking for the "Debut HOMOLOGATION" of the atmo MA70 I found 350+ page FIA document that shows totally different displacement to minimum weight relation table ,see (Page 92) of the following:
http://www.bps-racing.com/iso_album/...e-09-bd-ok.pdf
I belive that this may be "new" Homologations book for all cars with expired Homologations ,but I'm not sure?