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What does this do?
Posted: Mon May 29, 2017 9:34 pm
by Tea
What is the purpose of this part of the vacuum advance?
Re: What does this do?
Posted: Mon May 29, 2017 10:39 pm
by Chipper
I gather it is a 'flame trap' to prevent possible damage to the vacuum advance diaphragm in the event of a backfire from the carb.
Later 1098cc models didn't have it fitted.
Re: What does this do?
Posted: Mon May 29, 2017 11:27 pm
by irmscher
They didn't work
Re: What does this do?
Posted: Tue May 30, 2017 11:49 am
by GavinL
You can omit them and fit plastic vacuum pipe work as fitted to MG Midgets and others - I've just bought the pipe and fittings from Moss for £4. Only thing is the fittings are push fit so might need slight modification to work with the screw threads.
Re: What does this do?
Posted: Tue May 30, 2017 6:04 pm
by Tea
Ah I see. The rubber tube connection on our plastic one had corroded and split, so fitted one of these ones. It didn't work and the engine ran as though we hadn't fitted a vacuum advance so got a new piece of tubing for the old plastic pipe which now works a charm. Bit of a waste of ~£25.00