MG
The Classic Marque

SU Berlen (not always the best place to source info and parts) - HIF (click 'Next>>' at bottom of page to continue) -
https://sucarb.co.uk/technical-hif-type-carburetter-dismantling

Bigger carbs but general idea -
https://www.v8register.net/FilesV8WN/SUbookletsAUC9939AHIFtuningandservicing.pdf

Colin - and anyone else.
THIS IS IMPORTANT!

It has just been brought to my attention a detail that I had skipped, and not been aware of. I wasn't clear that there was a distinction between DOT 5 and DOT 5.1. My comments earlier were about DOT 5.1 which is a Glycol based fluid, similar to DOT 4 and DOT 3. Which explains why the bottle says it is compatible and can be mixed.

...

Bruce. Generally speaking, an overflow of fuel can be traced to one of two conditions--the valve or the float. The float can develop a minor hole or crack and fill with fuel resulting in its never rising upwards sufficiently to close the fuel shutoff valve. I have seen this a single time in something over 50 years.

More common is some form of problem with the valve that the float rises...

Bruce, Service and adjustment sheets are available online from the Burlen website, though whether they cover your specific issue I cannot say.

You forgot the image. I can send you the carb manual pages for the HIF44 if you send me an email. Dominic AT clancy DOT ch

I have been running, in my 1959 MGA with stock 1600cc motor, 93 Octane Methanol free fuel.

I suspect about anything would work as these cars weren't very picky. The Methanol concerns me for fear of perhaps loosening deposits. That fear may have no basis in fact.

Nonetheless, it seems to run fabulous and continues to provide immense joy.

Given how finicky some of the new vehi...

HI,

attached is a picture of HIF44 carb. When the fuel pump is on fuel comes up the exposed pipe marked with blue arrow. I assume this an overflow.

I generally understand how these work, but cant find a diagram that shows why this would happen. From what Ive read so far HIF carburetors have a seperate fuel cicuit.

I think this would due to the float chamber. The carb wa...

Is there any truth to the rumour that the "Square" Lucas logo was for LHD and dipped to the right and the "Round" Lucas logo was spec'ed for RHD and was dipped left?

Has something to do with the fluting in the lens as opposed to which bulb was used.

I would love to find out what the difference is , as I have both.

... CR

I have the transmission out of the YT while sorting rear seal leak. (leaked all over clutch) and I want to sort out , if I can, the third gear issue. I read that this is a problem.

After inspection the 3-4 shifter fork is well worn, which I assume adds to the problem, a fork in better condition is going to be installed. I have read somewhere of a "fix" to allowing a bit more travet to t...

Thinking about it I'm going to add a condition to renewing the worn parts with new, if the new parts are so piss-poor as many are and thee worn parts are severely worn then you may be better sticking with the existing parts as their useful life after this point might be longer than the new parts, so change next time or as required.