[Mini] fueling issues after converting to EFI solved

Frits Schouten fritss at ps.gen.nz
Thu Aug 14 13:28:34 MDT 2014

Hi Anne,
The main reason is that the EFI pump is not very good at sucking. The feed
pipe in the Mini tank is only 6mm id and as a result of that the EFI pump
was cavitating on low tank levels. In the process I've already lost one EFI
So, with the surge tank there is a constant head to the EFI pump and I can
now feed the pump with 12mm id fuel line, as per specs of the EFI fuel pump.

Just last night the job was finished and I drove the Mini for quite some
distance with no noise from the fuel pump and no more issues with


-----Original Message-----
From: Anne Krijger [mailto:anne at mibv.com] 
Sent: 15 August 2014 02:19
To: Frits Schouten
Subject: Re: [Mini] fueling issues after converting to EFI solved

Hi Frits,

results in a 404?

I saw the attachment in the mail send directly to me, but it got
stripped of the list mail.

Not clear what the point of the surge tank is yet...


On Thu, Aug 14, 2014 at 10:32 AM, Frits Schouten <fritss at ps.gen.nz> wrote:
> I forgot the link to the photo of the surge tank...
> http://simple-pages.homeunix.net/mini/Minizuki/surgetank.jpg
> -----Original Message-----
> From: Mini-list [mailto:mini-list-bounces at autox.team.net] On Behalf Of
> Schouten
> Sent: 14 August 2014 19:35
> To: Anne; Mini-List; Minilist (yahoo)
> Subject: [Mini] fueling issues after converting to EFI solved
> Hello all,
> After some time in storage it was time to get the Mini out on the road
> again.
> Remember that I've swapped the A+ engine with a Suzuki GTI engine. Ex race
> car engine, DOC, 16 valves, 5 speed box, etc, etc. NICE.
> http://simple-pages.homeunix.net/mini/EngineUpgrade/
> Now the feed pipe size out of the Mini tank is insufficient to feed an EFI
> pump, which is not very good at sucking fuel and in particular at the
> tank levels.
> I've now made a surge tank out of 75mm exhaust tube with 8mm hose tails on
> the top and one 12mm hose tail on the bottom.
> A facet pump is used to fill the surge tank, a new return is welded at the
> top of the fuel tank to take the overflow from the surge tank, and the
> return from the engine goes back into the surge tank.
> See attached photo.
> Problem solved.
> Cheers,
> Frits Schouten
> New Zealand.
> [demime 1.01d removed an attachment of type image/jpeg which had a name of
> IMG_1210072.JPG]
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