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 Electric fuel pump conversion.
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 26 Jan 2021 :  15:02:07 Show Profile Reply with Quote
As part of a long term fault finding exercise I've just fitted an electric fuel pump, under the back seat. It's an electronic style pump for an MGB. (as opposed to the older style with points)

I was wondering what the collective opinions were on the placement of an electric fuel pump, under the back seat, (where I have placed it), or under the bonnet?
I have just ordered an inertia switch for the electrical supply, to kill the pump in the event of an accident.
Thoughts?

Andy

1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro

Edited by - andydeans3 on 26 Jan 2021 15:05:28

melle
V4 Guru

United Kingdom
3830 Posts

Posted - 26 Jan 2021 :  16:48:33 Show Profile Reply with Quote
quote:
Originally posted by andydeans3
I was wondering what the collective opinions were on the placement of an electric fuel pump, under the back seat, (where I have placed it), or under the bonnet?
It depends on the type of pump, some are designed to push, others to pull fuel.

www.saabv4.com
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andydeans3
V4 Guru

United Kingdom
1994 Posts

Posted - 26 Jan 2021 :  19:26:47 Show Profile Reply with Quote
Not actually sure which way this MGB pump works, but on an MGB it's mounted right beside the petrol tank.
I assume that it is therefore a push pump, so under the seat is probably the best place.
I was also considering whether it's better under the seat, so if you get any leaks, you'd know right away. (I had a devil of a job getting the banjo connections on the pump, to seal, though they seem fine now)
Under the bonnet, you'd not necessarily notice right away, and there's an awful lot of "hot stuff" there
Now let's see if this very intermittent fuel starvation problem that I've had, re-surfaces.

1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
1991 Nissan Figaro

Edited by - andydeans3 on 27 Jan 2021 16:07:50
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