S&S Super Stock Big Twin Alternator-Style Crankcase For Harley-Davidson '92-'99
S&S Super Stock Big Twin Alternator-Style Crankcase For Harley-Davidson '92-'99
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2,324.88 €
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S&S 31-0005 Super Stock Alternator-Style Crankcase For Harley-Davidson Evolution Big Twin
- This crankcase is machined to accept the stock oil filter assembly introduced on some 1992 model Big Twins, this convenient, accessible location can be utilized to simplify installation of an oil filter in custom applications
- Machined to accept '84-'91 or '92-'99 style oil pumps and are machined for the stock '84-'99 style oil distribution system
- For Evolution style engines, the engine builder has the option of venting the crankcase breather from the crankcase, through the cylinder heads, or both, it’s recommended using both crankcase breathers in engines of 96" or larger displacement, to make this possible in all applications, there are two crankcase breather holes available in the rear of the S&S alternator crankcases, one is in the stock location and the other is angled down to allow the installation of a crankcase breather fitting in the chassis with integral transmission/oil tank
- S&S Big Twin cases optimize crankcase oil scavenging efficiency by using a ported design breather passageway and a breather window that is machined to maximum timing specifications, these features allow the air/oil mist to move smoothly from the flywheel cavity to the gear chest of the engine
- The return oil pick-up passage to the return side of the oil pump has been relocated in order to avoid the turbulence caused by the oil pump drive gear, this unique design results in greatly improved scavenging of oil from the gear case and virtually eliminates oil carry over at sustained high speeds
- S&S Big Twin crankcases for Evolution style engines are not machined with a primary oil scavenge port for drawing oil from a Shovel style primary chain case
- Stock bore and natural aluminum; accepts '92-'99 style oil pumps; '92-'99 cases differ from the '84-'91 only in the oil pump mounting bolt pattern
- Made in USA
- Replaces OEM: 24572-93A, 24571-93
- Natural finish
- Fits 1992-1999 Evolution Big Twin models
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