fuel pump.

[John Young]

Fuel pump is u/s would it be possible to fit an electronic pump under the
bonnet before the filter ?

[Ian F]

Hi John,
this may be OK, but I would recommend fitting the original SU pump, perhaps one of the modified ones with contactless movement.

A few things to consider:

# some of the smaller pumps are recommended to be fitted low down at fuel tank level, so you would need to check that
# a modern pump may provide too much pressure for the SU float chambers, so you may need to fit a pressure regulator as well
# most are intrusively noisy - at least the ones I've used in the past (Facet), but that was some time ago so modern ones may be quieter

Ian F

[David Wicks]

With the original standard SU pumps readily available, cheap and easy to fit in both CB and RB config, why would you want to do this unless your car is in race setup?

[Vic Butler]

You would need a "puller" pump for underbonnet installation ( more pull than push) as opposed to the rear mounted "pusher" version.
. Vic Butler

[John Young]

Thanks for the info Gents,looking for a pump now.

[Peter Cresswell]

To fit a pump in the engine compartment you will have to do some modifications to the fuel lines - connect the pipe from the tank to pipe going forward to the front; replumb the end of the pipe from the pump to the location of the pump; replumb the pump to the carbs.
Read this before you start and check/replace as necessary:
http://mgbforum.mgb-register.org/viewto ... ?f=4&t=384
Fitting another pump also throws up several problems as highlighted above by Ian Fozzard and Vic Butler and by the time you have bought the extra piping and all the additional parts to fit the pump you will have spent much more than replacing the SU pump in its original position. Be prepared for a bit of a fight to undo the pump mountings, the fixings are likely to be very rusted and covered with underseal. If the bracket is very rusted (plus a noise insulator) get a new one as it makes refitting easier, and make sure the 'O' ring seals come with the pump as it is many MGBs will have fibre or copper washers to make the joint fuel tight.


When I replaced the pump in my roadster last April it was still working ok as far as I could tell and it was most likely the original for the car. So reliability of the SU pump is not a problem.

Buy directly from Burlen Fuel Systems or one of the main suppliers - but check prices first as the market is quite dynamic. Also the MG and Triumph spares day is coming up at the end of February and some main suppliers will usually have VAT paid offers available on the day.

[Dave Linkson]

I replaced my old points SU pump with an electronic Hardi pump in the original position, works well, no regulator needed..