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2 questions

2 questions

Postby seattle##gs » Mon May 29, 2017 3:09 pm

1) what is the thread pitch of the timing plug hole at the base of the cylinders 1968 and earlier T 120? It is a BSF something.

2) OIF frames...is there a vent tube anywhere? I know the engine vents through the primary.

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Re: 2 questions

Postby L.A.B. » Mon May 29, 2017 4:43 pm

seattle##gs wrote:1) what is the thread pitch of the timing plug hole at the base of the cylinders 1968 and earlier T 120? It is a BSF something.


According to my '68 parts book, it is part E4706 which appears to be 1/2 x 16 BSF.



seattle##gs wrote:OIF frames...is there a vent tube anywhere?


Yes, there should be a vent tube between the plates at the rear of the headstock.
Image

(There are variations in breather pipework according to model year).
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Re: 2 questions

Postby seattle##gs » Mon May 29, 2017 5:20 pm

what is the size of this tube?

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Re: 2 questions

Postby L.A.B. » Mon May 29, 2017 5:35 pm

seattle##gs wrote:what is the size of this tube?


The hose 71-2349 (item '25' on the previous drawing) that attaches to the frame vent tube is 3/8" ID.

http://www.steadfastcycles.com/cart/ind ... ts_id=7101
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