MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - Intertia Fule Pump Switch

I just ordered the Moss 900-240 inertia fuel pump switch. For $50 it seemed like a good safety idea.

I've heard that the factory swtiches put on later models were problematic. Is putting this switch on my fuel pump circuit a good or bad idea?

Thanks,
BH
BH Davis

It's one of things that's hard to argue is a *bad* idea, but the chances of it doing something useful are negligble to non-existant? The factory fuel line cut-offs are known to leak, causing a *higher* fire risk, and even with sound cut-offs it's only as safe as the person making the connections, which does make adding them a bad idea. But at least that can't happen with a fuel pump cut-off switch. However these can suffer from tripping out over a large bump. I'd rather fit a fuse to the fuel pump circuit (and the overdrive) to prevent a fire in the more well-known event of a short developing in the wiring.
Paul Hunt 2

BH, I have an inertia cutoff switch in my 74. I used one I found in a junk yard. It came from a Ford Tempo. I don't feel bad using it because it was made in the UK and is a high quality switch. I checked that it worked before installing. It has never cut off on me. Cost $5. The main problem I see is there is enough fuel in the carburetors to run about a half mile including making one full stop after the pump stops. Photo is shown. I have also fused my white wire circuit.

Clifton


Clifton Gordon

Paul,

i think there was a 'collision switch' mentioned that cuts off the power to the electric fuel pump.
Meanwhile there are safe fuel cut off switches(valves) available from garages that do car gas conversions.

Clifton,

i am with you, i made use of one from a Ford Mondeo and one from a Rover 820 and have installed them into the line to the fuel pump close to the fuse box.

Ralph
Ralph

This thread was discussed on 06/09/2007

MG MGB Technical index

This thread is from the archive. The Live MG MGB Technical BBS is active now.