1275 SPI Turbo
Turbo Mini Forums

I am lookin to do a custom turbo setup on my 1275 Single port injection motor and wondered what all i would have to upgrade for the fuel system and how i would go about that being its a fuel injected motor, would i need a new injector? Fuel pump? how would i program the fuel curve if needed? thanks for the help

Easiest way is to throw away all the SPI gubbins and use a good old carburettor.

Well... Running low boost, say 5 psi would i even need to adjust the fuel curve any? or allow for more fuel?

Yes. 5psi boost pressure is approx 30% more air than NA.

There is a whole section on the forum entitked "A-Series EFI / Injection ".

I suggest you have a good read through that.

You will then realise why most people who turbo the A series do as Tom says and use the well proven carburettor and you will also see what progress has been made by those very few people who are trying injection and how they've done it, or are trying to do it.

Also, when reading through there, make sure you understand the difference between trying to do it on a 7 or 8 port conversion (relatively easy) compared to a standard 5 port head (lots of reading and understanding required).

Schrödinger's cat - so which one am I ???

you might find getting through emissions at MOT time difficult with an spi donor vehicle

"Turbo's make torque, and torque makes fun"

"did you know you can toast potato waffles?"

Hi,
A mappable ECU and an extra injector should do the job.
Cheers,
Gavin :)

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if you change the engine on the log book to the engine from a metro turbo/era then you will come under the emmissions test for that engine and not the SPI engine.

thats what ive got to try and figure out how to do...

Yes i moved to the darkside

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yeah you should be able to but i am using the spi engine just swapping to carb etc. there are no codes for the engines are there just casting numbers? or are there?

if not its simple, if there are its slightly more complicated.

Hi,
You've got to prove to the MOT tester that the engine is a different age to the car so that the emissions are tested to the capabilities of the engine.
Therefore sticking a carb on an injection engine isn't going to do it.
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

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yeah but how do they know the age of the engine? is there an engine code for the SPI and a different one for the Turbo unit?

if not then how is anybody going to know thats its not an older engine?

this is the problem im having at the moment..if im not going to be able to get away with it i guess im just going to have to go K-Head muahahahaha

Hi,
Yeah course there is. That's how the MOT tester can check he's carrying out the right test.
When he puts your reg into the computer it comes up with all the detail on your log book.
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

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do you know the eninge code for the turbo engine?

we have autodata at work if you dont know i cant find out tomorrow and post it up. might be usefull to people.

Hi,
Should be in here...

Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

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spot on thanks very much. now ive got to go away and have a think!

one last thing. is the engine code on the engine anywhere?

Hi,
Should be on the top of the block just below the head, just above the alternator.
Cheers,
Gavin :)

VEMs Authorised Installer / Re-seller. K head kits now available!

WB/EGT gauges. Click here for customers write-up

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My Mini build diary

ahhhh yeasssssssss that little plate, i remember now. Cheers Gav!!