... bit a box of chocolates that one as you have to strip the engine to find out if it is so fitted. Ones I have come across haven't except one. On the other hand this is not the strongest block
. Certainly would have been nice if all the features had been combined
... However, my choice would be to ditch the slugs and put in forged, and not worry about the oil sprays - less windage losses, and keep the oil on the bearings and cam.
Actually believe in this engine application, and given it's generation, this was done at the early stages of the emissions regs, and hence done for those reasons than anything higher tech. I was going to rig up the one I have and pressurise the gallery to see where they squirt, from a performance aspect if it isn't at the inlet side of the piston - cool end gases, it will do nothing to help increase protection from the limits of detonation, and rather suspect they don't looking at them. Nothing else on the engine is particularly scientific either.
my thoughts on it anyway