[Healeys] fuel pump

[Kees Oudesluijs]

An SU pump with points when polarity sensitive is easy to convert to non 
polarity sensitive. Just replace the diode with a bi-directional 
transil/TVS. Converting the electronic polarity sensitive pumps is more 
involved.

Kees Oudesluijs

Op 25-4-2023 om 09:36 schreef Patrick & Caroline Quinn via Healeys:
>
> G’day
>
> To increase the amount of collective trivia knowledge, everyone might 
> be interested to know that Warwick built Healeys or real Healeys were 
> fitted originally with twin SU fuel pumps. One for sea level driving 
> and the other for Alpine. To change from one to another or to both 
> it’s a matter of pressing a button on the dash.
>
> One of the pumps fitted to my 1948 Healey Duncan is still points 
> operated, while the other is electronic. The electronic pump is 
> polarity sensitive (+ve), while the points pump is not.
>
> Hoo Roo
>
> Patrick Quinn
>
> *From:*Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Simon 
> Lachlan via Healeys
> *Sent:* Tuesday, April 25, 2023 12:25 AM
> *Cc:* 'Healeys' <healeys at autox.team.net>
> *Subject:* Re: [Healeys] fuel pump
>
> I’ve installed a double-ended SU which sort of reinforces my faith in 
> SU whilst doubling up on the reserve pump option. One can switch from 
> end to end, both of which are individually fused. One end did fail and 
> the other got me home. It was the points.
>
>     Simon
>
>
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