Friday, 14 February 2014

Fuel & Induction:

I made a decision early on, to go with a Holley 4 barrel carburettor, which also means a different inlet manifold.

There are several inlet manifold options, such as Offenhauser, Edelbrock, or a modified Rover manifold. 
The Edelbrock and Offenhauser are both quite expensive and the modified Rover manifolds difficult to obtain. However, I managed to get lucky on ebay and found a Rover manifold modified for the 4 barrel carburettor, once the red paint was cleaned off it looks good.


This is it cleaned and fitted, the only problem now is the carb sits a bit high and touches the bonnet.


I bought an overhaul kit from America for the carburettor and will do a complete strip down and rebuild.

The weather has continued to be bad in January 2014 and looks set to stay the same in February, so work is confined to mechanical stuff in the garage.

Started stripping the carburettor and found severe corrosion in the primary float chamber. The float was siezed and corrosion was everywhere.

 I Overhauled the carburettor, replaced the rusty primary float and assist spring, and replaced the accelerator pump and secondary diaphragms, all seals, both float needle valves, power valve and all the gaskets.
The float levels were then set to the correct height. The photo on the right is the primary float bowl after cleaning and new float etc.


This is my home made throttle cable bracket, using the stock MGB cable. I may need to increase the spring tension though.

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