Don't use it as a "return line" as it will drop the pressure to almost nothing. Almost no carburetors use a return line, except some late emission-controlled models.

The Weber comes in left-hand and right-hand models. But both use the same casting. Usually one side is plugged, or not even drilled.

For more details, see 1200 Encyc - Weber 32/36

ive used a 32/26 on a standard sunny fuel system, nothing different and a mate used it on a 120y and 1200 standard system to with no dramas

Some say you need a high pressure fuel pump but thats really only if your running a high powered engine, A series should be fine with the mechanical fuel pump as it creates about 3 - 4 psi of pressure anyway - more than ample for a 32/36.

when adding SU's or twins thats another question tho.

Cheers
Dave

Its not the fuel pressure its the flow, standard fuel pump should be adequate for the 32/36.

For webers you dont need much more than 1.5psi, the stock fuel pump may not have enough flow. You have to watch the fuel pressure doesnt drop at high revs, if it does you need more flow.

Actually it *is* the fuel pressure. Fuel pressure is critical to float spillage. Redline recommends 2.5 to 3 lbs -- far more than 1.5 lbs. This is thankfully exactly what the 1200 pumps put out.

Regarding volume (flow), the Datsun 1200 stock pump puts out plenty of volume for almost 200 hp if working to specification. Test yours to be sure.