CASE ENG NAT 48-64

Super Stock® Generator Engine CaseInclude crankcase bolts, washers and nuts, cylinder mounting studs, timing hole plug, magnetic drain plug, assorted breather and oil line fittings, top end oil screen spring and plug, sprocket shaft Timken® bearing assembly, oil seal, pinion shaft main bearing race, cam needle bearing assembly, oil pump shaft bushings and installation instructionsBearing races are all line honed and breather cavity is precision machined to optimize breather timing for maximum oil scavengingMachined for 3.4375" cylinders and tapped 1/4"-20 for gear covers, oil pump, tappet guides, timer and timer advanceDrilled for 5/16" generator mounting boltsMade in the USAUse Timken style sprocket shaft bearings and '58 and later pinion bearings (will not accept '57 and earlier flywheels).'63-'65 models with outside oil lines must use oil port to the rear of the tappet block or oil port in gear cover and use custom oil lines.Generator crankcase gear kit includes circuit breaker drive gear, idler gear, circuit breaker gear. Shims and shafts must be purchased separately.Machined for '48-'62 panhead cylinder oil feed.Machined for '55-'64 tin primary.