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S&S Cycle® Raw Engine Crankcase for 1948-1964 Harley-Davidson Models with Big Twin Generator Cases, with All Necessary Hardware - Made in U.S.A. - 31-0008

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SKU:
31-0008
S&S Cycle® Raw Engine Crankcase for 1948-1964 Harley-Davidson Models with Big Twin Generator Cases, with All Necessary Hardware - Made in U.S.A. - 31-0008

S&S Cycle® Raw Engine Crankcase, with All Necessary Hardware - Made in U.S.A.

Fits 1948-1964 Harley-Davidson Models with Big Twin Generator Cases 

Features:

  • SUPER STOCK GENERATOR ENGINE CASES

  • Cast from A356 T-6 heat-treated aluminum alloy

  • Include 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 instructions

  • Use Timken style sprocket shaft bearings and 1958 and later pinion bearings (will not accept 1957 and earlier flywheels)

  • Bearing races are all line honed and breather cavity is precision machined to optimize breather timing for maximum oil scavenging

  • Machined for 3.4375" cylinders and tapped 1/4"-20 for gear covers, oil pump, tappet guides, timer and timer advance

  • 65 models use 65 alloy inner primary

  • Drilled for 5/16" generator mounting bolts

  • 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 and shims) and shafts must be purchased separately

  • 70-84 models are for a 35/8" bore and machined for 70-84 alloy primary

  • Made in the U.S.A.

Finish:

  • Raw/Silver

Fitment:

  • 1958-1964 Harley-Davidson Duo Glide FLH

  • 1958-1964 Harley-Davidson Duo Glide FL

  • 1955-1956 Harley-Davidson Model KHK 900 KHK

  • 1954-1956 Harley-Davidson Model KH 900 KH

  • 1954 Harley-Davidson Model KHK 900 KHK

  • 1952-1953 Harley-Davidson Model K 750 K

  • 1952-1953 Harley-Davidson Model KK 750 KK

  • 1949-1957 Harley-Davidson Hydra Glide FL

  • 1949-1957 Harley-Davidson Hydra Glide EL

  • 1948-1964 Harley-Davidson FL

  • 1948-1964 Harley-Davidson FS

  • 1948-1951 Harley-Davidson WL 740

  • 1948 Harley-Davidson 1200 UL

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