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Messages - Heywayne

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Singles / Re: B31 Inlet Valve Rocker - oil drillings
« on: 20 March, 2017, 20:29:44 »
Your confession is my reassurance it seems. Glad there was no damage. I have only ever tested the bike a few times so I'm new to the idea of the manual A/R lever.  I have been rebuilding the top end, re-bore, new piston, valves and guides etc and when I noticed this difference I immediately suspected a hard pressed worker trying to complete his quota all those years ago and simply missing a drilling.  I should never have doubted the quality of a BSA!!!
I must make sure I remember your oversight when I begin the running in process next month as I most definitely do not want to make the same mistake.
Thank you for clearing that up for me.
Heywayne

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Singles / B31 Inlet Valve Rocker - oil drillings
« on: 20 March, 2017, 15:48:54 »
This is my first posting so I hope I've followed the process correctly.

The inlet valve rocker on my 1955 BSA B31 only has one oil drilling hole at the push rod end but the exhaust valve rocker has two drillings, one at the push rod end and one at the valve end. 
I think the inlet rocker should have two oil drillings as well and maybe the hole at the valve end was missed in production some 60 odd years ago!!
Does anyone have a spare they can check or does someone know for sure?

The book Pt No. For the inlet valve rocker is 65-1102 (mine is stamped 65-1103) The book Pt No. For the exhaust valve rocker is 65-1100 (mine is stamped 65-1101).

Thanks Guys

Heywayne

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