Rotary engines are kind of an anomally, I think the rule makers had alot of problems trying to level the playing feild. Rotary engines generally make twice the power per displacement but also use more fuel doing so. The '91 cars were at an ADVANTAGE as they were allowed to run 375 lbs lighter than Porsche, Jag and Mercedes which is a considerable amount on a race car. You are partially correct re the engine size if you are using a Jag as comparison but Porsche used only a 3.2L four stroke vs Mazdas 2.6 Rotary. Cheers.
I should add that the Jags were N/A engines.
Last edited by Adrian; 03/20/09 07:54 PM.
