MK1 XR2
1760cc block w/85mm pistons
std fly and crank but with all the jubbly balancing and lightning, 6 bolt flywheel, full race head, twin 40s, 244 cam, 1.54 roller rockers, deciding between 125E lotus rods of balanced XR2 rods, steel main caps....etc etc etc.
Most important are the crank and rod bolts........Ta