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Home > How To > SPi / MPi Tank Plumbing / Wiring

TurboDave16V
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SouthPark, Colorado

Below is a pic of an MPi tank. As i understand, the SPi are exactly the same...

One thing to note, It seems to have a shorter filler neck - when installed into an older mini, the neck is around 6mm pround of the body/tank seal - making fitting a 'flippy' petrol cap very difficult!

Also, the tank might be 'loose' even when the securing strap is tightened right up. Clearly, the tank is a tiny bit smaller than the non efi tank. I just cut my tank strap, overlapped the pieces by 1" and welded it back together. Worked a treat.


http://up.turbominis.co.uk/up/mpi%20pump%20wiring.jpg

Alex Edit: Fixed Picture

Edited by AlexB on 28th Apr, 2008.

On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better


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AlexB
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Berkshire

Bumping, as I had to edit this to fix the pic - I needed it! *wink*


Jay#2

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Northern Ireland (ex AUS)

I hope you don't mind me asking in a how to section but do people use two spade connectors to plug into the pump or do they source a plug from somewhere? :)

On 7th Nov, 2008 Nic said:
naeJ
m
!!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd


KLAS

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Hamburg, Germany

a matching connector can be found in many cars, most use it at the screen washer pump


joeybaby83

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Isle of Man

nfauto, or vehicalwiringproducts will prob be your best bet

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Paul S

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Formerly Axel

Podland

Or you can use two standard 6mm female shrouded spades as I did on mine.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."


Jay#2

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Northern Ireland (ex AUS)

Thanks guys, I have been held back with things so I haven't thought any more about this. I have insulated spades on at the moment, does anyone know the current draw by the pump?

On 7th Nov, 2008 Nic said:
naeJ
m
!!!!!!sdrawkcab si gnihtyreve ?droabyekym ot deneppah sah tahw ayhwdd


shane

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Lowestoft, Suffolk.

Just thought Id add this as a guide, might be of use tho someone.
Shane


998turbomini25

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sheffield / derby

hi

this has been really useful but i have one question regarding the oil pressure switch, would the standard oil pressure switch work in this application or would an oil pressure switch that operated at say 20 psi and under be better? if so does anyone know where i can obtain one.
cheers luke


jonnymoran

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Galway, Ireland

does anyone have a diagram to wire up to ignition thanks


evolotion

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Glasgow, Scotland

shane in that diagram relay No1 is not needed. if you put the fuzed 12v feed straight into pin 30 on relay No2 it would function the exact same :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.


shane

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Lowestoft, Suffolk.

I know if it is used just for the pump it only requires one relay, but was using the n/o and n/c contacts for other things.
Shane


c2_mad

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quick question, what does the relay do? and do i need it? as i have just wired mine up, without any relay? also do i need that oil pressure switch wired in?

sorry for what seem like stupid quesitons, but i am a total novice..


apbellamy

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King Gaycharger, butt plug dealer, Sheldon Cooper and a BAC but generally a niceish fella if you dont mind a northerner

Rotherham, South Yorkshire

The relay means that you can supply the pump with a good power source (e.g. direct from the battery), but have it switched on/off by the ignition or oil preasure switch etc. Running it direct from the fusebox/loom etc you run the risk of over loading the circuit, blowing fuses, melting wires etc etc

On 11th Feb, 2015 robert said:
i tried putting soap on it , and heating it to brown , then slathered my new lube on it

*hehe!*


c2_mad

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oh ok mate... i ran my wire from the ignition, with an inline fuse..so i think it should be ok...

thanks for the help buddy


Ben H

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Melton Mowbray, Pie Country

The point of using the oil pressure is so that if you have an accident, the likelihood is that the engine will stop and hence the oil pressure will drop and the fuel pump will stop. This can be done in other ways, drive it of an ecu like the megasquirt, this stops the pump if the engine stops or possibly run it through an inertia switch. Or do all three.

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c2_mad

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thanks for the insight mate...*wink*

cheers

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