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Topics - gusmagicbus

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1
Singles / C15 Ignition Switch
« on: 11 November, 2017, 21:22:12 »
Hello,

I am replacing the wiring loom on a 1964 C15 SS80. The wiring loom which was on the bike had (what I believe) is a 88SA switch and it was wired like this https://ibb.co/epceVw

The wiring loom I bought from ebay is wired like this https://ibb.co/h2UbAw and I think this requires the 63SA ignition switch. Does anyone know what the correct wiring and ingnition switch is for the 1964 SS80?

2
Singles / BSA C15 Carb
« on: 23 May, 2017, 23:46:45 »
Hi Folks,

I have an BSA SS80 1964 with a 376/281 Monobloc carb, I have stripped the carb to recondition it and whilst looking at carb diagrams I have noticed that mine has no air valve or associated operating gear. Although there does appear to be a hole in the carb cap for an air valve control cable. Do you know if the air valves were fitted to all the carbs in this series? I am also not sure how the the air valve is operated, I think there is meant to be a valve leaver on the handle bar, but looking at poor quality photos on the internet of SS80's i'm not sure I can see one of these.

Can anyone shed any light on my missing air valve?

Thanks

3
Singles / Distributor shaft lube system
« on: 10 May, 2017, 23:06:20 »
Hello,

I have stripped the distributor on my C15 1964 SS80. I see that there is an oil groove and long recessed area along the drive shaft (the bit half way between the drive dog at the bottom and where the cam presses on at the top). I am meant to pack this shaft recess with grease when I reassemble?

Thanks

4
Singles / C15 Head Gasket Advice
« on: 05 February, 2017, 20:32:36 »
Hello,

I'm rebuilding a C15 SS80 1964. I've measured the thickness of my cylinder head gasket (~.039 - .040") and bolted the head onto the barrell without the gasket and measure the thickness of the gap which is about ~.035 - 0.38 depending on which corner you stick the feeler guages in. Hence, compression on the gasket could be as low as .001" in one section.  I think the head has probably had one too many skims, and I am worried that the gasket will blow (or leak oil).

I guess a slightly thicker gasket would be good, does anyone know where I can get one off these or if there is another trick commonly used. Or even if 001" gasket compression is ok.

Thanks
Steve

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