17 replies to this topic

[StevenClarkuk]

Hi All,

 

I currently have a Mini Sprite 1275 Automatic (1994) which has been sitting in the garage for 5 years. This was due to a lot of  problems with the engine and gearbox.

 

I had picked up a 1275 MPI engine along with most things I need to convert it to a manual.

 

The other issue is with bad rust on the places like the floor, sills etc.

 

I know of the obvious differences between my auto and an MPI car (Subframe, Front Panel and the bracket for the CPU)... is there any other panel differences that I should take into consideration before fixing the rusty panels underneath?

 

Or do you think it would be a better idea to ditch my MPI engine and buy an SPI instead.  This would mean I wouldn't have to modify the car so much? and I am guessing keep my wiring loom?

 

Thanks for looking.

 

steven

[limby2000]

Is your sprite injection?,obviously if not there,s a matter of fitting fuel lines. I fitted the fuel lines from a spi to my mini thirty and it was,nt as straight forward as thought. Have you still got the gear selector from the auto, if so do you want to sell it?.Terry.

[Tomm]

The Sprite will not be MPI. Easily overcome though, just run an MPI fuel tank and pump, you will also need to add a return fuel line. Why can you not use the fuel line that is already there for the supply?

On my 16v swap my pump cost £20 and my fuel lines (feed and return) cost about £18 and was a doddle to fit.

What has made you want to go for an MPI out of interest? A carb motor would be far simpler to wire up, respond to modifications better amung other things, not saying it's a bad idea going for the MPI, I loved my old one, was an excellent daily.

[Guess-Works.com]

If you're planning on running the MPi as factory, you'll need the wiring loom, ecu, srs modules etc etc basically, everything from the MPi...

Otherwise you'll need a thrid party mappable ignition unit and timing wheel, either a carb or injection system, personally I'd recommend the Specialist components throttle body and ECU.

 

A '94 sprite should have all the fuel lines already installed, even if it was a carburettor car, but you will need a tank with a 3 bar pump.

[Midas Mk1]

If you're planning on running the MPi as factory, you'll need the wiring loom, ecu, srs modules etc etc basically, everything from the MPi...

Otherwise you'll need a thrid party mappable ignition unit and timing wheel, either a carb or injection system, personally I'd recommend the Specialist components throttle body and ECU.

 

A '94 sprite should have all the fuel lines already installed, even if it was a carburettor car, but you will need a tank with a 3 bar pump.

Surely you wouldnt need the SRS? I've removed mine from my MPi and it runs fine?

[Guess-Works.com]

probably not, but best to start off with everything and get it working, then remove items...

Last thing you need is the ecu not working because you're missing a module.

[Tomm]

I am fairly sure that the ECU system on this works with an immobiliser module doesn't it? So you will need key, ECU and possibly an ignition ring? 

[StevenClarkuk]

Hi, I have a MPI engine I bought years ago but haven't put it in yet.

I have almost everything for it wiring loom, cpu, fuel pipes, exhaust, fuel tank with the correct pump. The only thing I don't have is everything relating to the clutch.

Cheers

Steven

[Wim Fournier]

Are you aware that you need a different subframe as well?

[StevenClarkuk]

Yes I have the subframe as well thanks.

Does the underfloor have different way for attaching the fuel lines on the mpi?

Is it worth all the hassle or should I pick up a non injection 1275.

Edited by StevenClarkuk, 12 November 2015 - 03:12 PM.

[Tomm]

To be honest I don't think it is going to be much more effort to get the MPI going than a standard Carb, despite what i said earlier. 

 

If you have the MPI tank, that will work on your standard lines as GW has said (i value what he says, he knows his stuff). 

 

If you then have a suitable subframe its pretty much a bolt together job surely. You will need a manual pedal box and a Clutch cylinder and lines. It sounds like you have a lot of the parts there already. 

 

If you were to go carb its super simple to wire everything in. You can get them running on the floor separate from the car simply enough just to check its a decent engine. Then if you have everything from an MPi then you have got the biggest part of the puzzle sorted it seems. 

[monkey]

Yes I have the subframe as well thanks.

Does the underfloor have different way for attaching the fuel lines on the mpi?

Is it worth all the hassle or should I pick up a non injection 1275.

Just swap the throttle body for a carb, and I assume the dizzy hole is just blanked off, so fit a dizzy and voila - your mpi is a carb... I may be wrong, but I think it's a simple as that

[FlyingScot]

Mmm don't think it's that simple...pretty sure that the distributor hole isn't just "blanked off" and you won't have any drive to it from the MPi cam....

FS

[monkey]

Fair play, might need to throw some megajolt on there too then :-/

....just ignore me :-P

[StevenClarkuk]

Cheers guys like I appreciate your feedback.

Makes sense to throw the MPI in. I will probably keep the engine unmodified until know everything is running sweetly.

I can then modify it a bit down the line.

steven