Quote:
Originally Posted by VIVA GT
Wasn't the maximum capacity determined by calculating what it would be if the 'standard' engine had the 'maximum overbore' (which I suppose would have been 0.060"). Presumably someone creative at Ford decided to add this to the previously homologated 1800cc maximum overbored 1600cc BDA giving a further additional 200cc...
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Can,t quite remember all of the twists from the time , but I think the original Mk1 RS1600 was allowed to go out to 1860cc under FIA rules ,so they Homologated the Mk 2 as 1800cc to allow it to go up to 2000cc when they found the alloy block would take that bore size .
Historic regs now mostly allow 2 Ltr in the Mk1s , which I don,t think was correct for International regs originally .