IaM-Ray posted:You guys seem to be growing in number, have you installed cylinder head temp guages and do the temp numbers show an advantage to the cooling of no. 3 cylinder? Just wondering, I love the dry sump concept just never had it and I don't think it would do in my subie
I really don't think the dry sump does a whit to cool the engine or the oil. The dry sump does two things: it ensures a continuous supply of non-foamy oil AND it prevents windage(or sloshing of oil wrapped around the crankshaft). The reduced sloshing frees up a couple HP because of decreased air resistance to the spinning crank.
If the dry sump oil tank is designed properly, the oil return swirls down the wall of the tank, becoming liquid and removing any air in the oil.
I put my dry sump in specifically for crankcase breathing and vapor reduction. It was a failed attempt to reduce blow-by, but that could only be fixed by new rings and cylinders.
The engine MAY run a little cooler due to the reduced friction/sloshing/foaming.