On my 73 roadster they go a few inches below the engine mounting to which
they are attached. But at speed I could still imagine it not dropping
straight to the ground but blowing back onto the exhaust pipe
In my experience on a V8 with HIFs there is no detectable difference in
running with fuel pouring out of an overflow pipe, and on the other hand
just before the float chamber empties when I had cross-connected the fuel
pump to the overdrive circuit as a 'get me home without blowing up' ploy.
After that I did briefly consider fitting small chamber with a float switch
to a warning light. Or if petrol has a measurable resistance suspending two
probes in a commonised pipe with a small gap between them.
> ----- Original Message -----
> From: <Menno.Meijer@ict.nl>
> To: <mgs@autox.team.net>
> Sent: Thursday, April 24, 2003 5:13 AM
> Subject: SU HS4 overflow problem
>
> > Q1: What should be the length of the overflow pipes attached
> > to the lid of the fuel chamber? (I expect them to be that
> > long that the fuel will never touch any "hot" part of the
> > car)
> > Q2: What's the "usual" way of detecting an overflow problem when
> > these longer metal pipes are fitted? (I expect a rough
> > running engine because the fuel level in the carb would be
> > too high)
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