Vintage Cars: mg fuel pump failure, electronic fuel pump, banjo bolt

Question
74 mg midget  rubber diaphram in the pump got eaten by the fuel I guess-- Walbro remarked thus:"The Walbro bellows style fuel pump, Part No. 2403, was part of Walbro 2000 Series pump line that was originally introduced in 1928.  This line of pumps was discontinued a few years ago.  One of the reasons Walbro elected to discontinue this design was due to the fact that the bellows material in these pumps was sometimes incompatible with some of today’s modern fuels.  Alcohol and additives in some fuels cause the bellows to become soft and gummy.  We do offer a bellows replacement kit; however the bellow material is the same as the original material.  If you have a fuel compatibility issue, you may still have this issue after replacing the bellows."

  I bought a electronic fuel pump from Victoria B --bottom of page on left:  http://www.victoriabritish.com/icatalog/sm/0081.asp

 question1-- am I going to have the same failure down the road with this pump?
question2--- should I get a "cube pump" like the Facit that pumps 2-4 lbs all the time - or a pulse pump?

question 3 by the way - the inlet and outlet on this VB pump seem to be British Pipe Thread Parallel - I guess I will try to put in 3/8 nylon pipe thread 1/4' hose barbs?
with teflon tape and hope for best- the "official" banjo bolt kit is $50- comments? thanks!

Answer
The increasing oxygenators in fuels are certainly hard on diaphragms in pumps, carbs etc, and in loosening junk in fuel systems. I don't know that pump, but see no reason why it shouldn't be fine. (Even if it has bellows, I think the polymers are better these days.) Though they're more expensive, electronic versions of the pulse-type (SU) should also be OK. Constant pressure is not required for carbs: the float chamber air space irons out pulses. It's the mechanical contact breakers that were the SU's major problem.

Re. the fitting threads; you know your threads better than I do. If the threads match *well*, and the nylon barbed fitting goes in reasonably tight, I would go for the teflon tape wrap, yes, and make sure to get a tight fit on the tubing clamp. The pressure is not exactly high in the system. But do switch on the pump and leave it pressurized for a while (half hour or more) after installation to check for leaks. If the fitting isn't tight in the pump body thread to start with, no amount of teflon tape will fix it, in which case you might have to go for the proper banjo (brass, I assume).