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BT UL cylinder ID question

Moderators: Curt!, Pa

Post Mon Jun 12, 2006 7:10 pm

Posts: 74
Location: Wichita, KS
Hey folks, there's a pair of cylinders I'm looking at buying, rear has a casting # 120-37 with a base spigot length about 2" in length (standard cylinder) but he other has a casting # 120-371 and the base spigot is about 1" in length. Can't ID it in my parts book. Any help appreciated. Can I run this pair as a set?

Post Mon Jun 12, 2006 8:56 pm
don User avatar

Posts: 574
Location: Spokane WA USA
The 120-371,(a rear 13 fin) With the base spigot about 1" in length, Was likely cut to mimic the earlier VL cylinder. (1936)
I would closely measure both to see if they could be used as a pair..
These cast #'s originally were a pair.
120-37 front 13 fin. Are they 3-5/16" or 3-7/16"?
don

Post Tue Jun 13, 2006 2:43 am

Posts: 74
Location: Wichita, KS
They both need sleeved.

Post Thu Jun 15, 2006 5:40 pm
don User avatar

Posts: 574
Location: Spokane WA USA
Los Angeles sleeve, Centrifugal cast iron for harley-davidson,
3.422 bore, X 1/16" wall, 8" long is/was Catalog No. T-701H.
don


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