Morris Minor Owners Club

Soon I will be connecting up the SU HS4 on my car, I think the top one on the float bowl is fuel in?, and the other a vent?, also do I block off the other one which is at forty five degrees or connect to something.

Don't block off anything...unless the carb is part of a twin-set ? Make SURE the float bowl is dead vertical when you have it fitted. What manifold are you using ??

Yes, the pipe on top of the float chamber is the fuel line from the pump. Where is the other pipe? You might have a small one on the same side as the float chamber - that is for the vacuum pipe to the distributor; and one on the opposite side to the float chamber, which is connected to the crankcase breather to suck fumes back into the engine.

Manifold is a water heated alloy copy of something, only I wasn't going to connect up the manifold, carb has a tiny pipe for distributor as well as this other pipe, I'll see if I can get a picture up.

This is a new old stock carb I got of ebay some time ago, has a ADE needle which I'm going too attempt to wittle down to the profile of an AAA / AAU, could the carb be part of twin carb set?.[frame][/frame]

No it looks fine as long as the float bowl is vertical. The copper pipe is the breather pipe - connect to rocker cover. The upper brass pipe with 'bell' end is the fuel inlet - the other is the breather/overflow. Put a rubber hose on it and lead below - although I usually do a 'swan neck' to stop any unnecessary fuel loss.

Okay, thanks very much for that.