The metal lines are rather long with several bends that are hard to
describe. In the Moss catalog the exploded view of the HS-4 carburetor shows
one of them -- the front and rear pipes are essentially mirror images. The
front and rear pipes come together near the bottom of the engine block to
the rear of the motor mount, where they are secured by a metal loop attached
by a bolt to a threaded hole in the block. They extend a few inches below
the loop, at a level just above than the bottom of the oil pan. I hope that
helps.
on 4/24/03 3:13 AM, Menno.Meijer@ict.nl at Menno.Meijer@ict.nl wrote:
> Experts,
>
> Recently my rear carb had an overflow problem. (fuel came out
> of the overflow pipe) After cleaning it all (chamber, needle
> and seat) the problem was solved.
>
> What worried me was the following: The PO probably replaced
> the "original" overflow pipes with short rubber hoses. (approx.
> 40 cm) The result was that fuel leaked on the inside of the
> engine compartement. (This worried me because of the possible
> risk of fire)
>
> Next to the disadvantage of the possible risk of fire the ad-
> vantage was that I smelled the fuel, stopped and found the
> problem. I wonder whether I'd found the problem so quickly when
> the overflow pipes were long enough and the fuel leaked on road.
> (while driving)
>
> At first I thought that the rubber overflow hoses were original
> but according to my catalog there should be metal pipes with a
> small piece of rubber between the lid and pipe. (In order to
> reduce the risk of fire these long metal pipes would make sense)
>
> 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)
>
> Specs: 1963 MGB, 2 SU HS4 carbs.
>
> Greetings and looking forward to your responses,
>
> Menno Meijer
> The Netherlands
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
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