Quote:
Originally Posted by Flieger
Reason I like it is it has the 66mm short stroke crank that can rev safely to 8000rpm+ without the torsional vibration problems of the 70.4mm stroke crank. It also uses the RS clyinder size so you are not boring the case out to the ragged edge (assuming you use an early case) like with a 2.8 or 3.0 short stroke. Makes it more durable while giving plenty of power at the top end.
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I think you could spin it up to 8k all day, because of the lesser rod angularity. I think you could run a production rod, but I would go custom pistons completely. If street driven, I would port the heads, but then to go a little under cammed for the real world. Thus I assume a mag case. I think the limit on a magnesium case is the 2.9 big bore set up that uses the 2.7 sized case bores (which is thinner barrels, but do-able), but would I do the thinner barrels, I generally won't personally!
For a Mag case, idealy I actually like 2.6 size using a 66 stoke on 92 bores, but only if you are planning to rework the RS heads to flow and in consideration of the compression ratios.
If late aluminum case 3L, I like that short stoke build if you are on a budget for a 2.8 l with the 66 stroke and 95 pistons, but I would cam that up, and do a lesser porting.