16-09-2021, 08:49 AM
(15-09-2021, 05:00 PM)JonE Wrote: so how did you manage the float chamber with the angle of the carb? Its not a usual one... great idea.
The SU carb is a 30 degree downdraught. Mounting it below the exhaust manifold required a different float chamber with the mounting the other way round. The angled SU float chambers are left or right handed, it was a case of getting the correct one. In order to keep the fuel level in the float chamber correct, an aluminium spacer was made to go between the carb body and the float chamber mounting. A new longer fixing bolt had to be made. It was very straightforward but I had a skilled engineer friend make the spacer and new fixing bolt.
The inlet manifold is a modern 30 degree downdraught produced by Alan Raeburn, simply turned upside down.
I like the fact that the carb is not affected by heat from the exhaust, any fuel leakage is also away from the hot exhaust, the installation looks period and the carb does not protrude through the bonnet.