Originally Posted by MadRod

A Merkur did 211 at the Saltflats (5miles) with 580bhp & a lot of aero aids this suggests 700bhp would be required to hit 225 if on the same gearing, lengthening the gearing & without aero would require more so I guess 750+bhp to haul a Cossie to that Speed if distance is over 4 miles.
I calculated mine could reach a theoretical 234mph given at least 4miles with circa 900+bhp. Brunters is 30secs on full throttle that extra 2.5miles would take around another 45secs, all theoretical of course because it would have fallen to bits at the 2 mile mark. A 15 year old Cossie aint a modern Jag with works backing im afraid.