Technical engine kaput

[yan montego]

Hi Folks The engine on my 1.1 mk 1 Punto is kaput is it possible to replace it with a 1.2 engine will it go straight in or will there be any electrical issues.
Thanks ian

 

[fingers99]

No problem SPI for SPI, MPI for MPI.

Which, in traditional Punto speak, means Mk1 for Mk1, Mk2 for Mk2. You will need a spacer for the exhaust manifold to clear the sump.

Do try and see any replacement engine running -- do a compression test if you can. There's some dreadful tat out there waiting for the unwary.

 

[yan montego]

Ah ha very interesting a spacer where would i be able to get such a spacer from
Thanks Ian

 

[fingers99]

You can just make one up from a couple of ends of an old downpipe -- or pinch the downpipe of a scrap Punto 1.2.

 

[yan montego]

Hi is possible to convert a mpi engine to spi by swapping the injection system over. as I don't want to get involved in swapping ecu's
Thanks Ian

 

[fingers99]

No. Inlet ports are very different, and any MPI ECU will expect an input from a cam sensor and a knock sensor. The Poles probably have a way round it, but it'd fail UK emissions.

The other way round is pretty easy -- use an MPI block with an SPI head and use the SPI pulley and water pump on the MPI block. That way you've effectively got an ordinary SPI engine, as far as the ECU is concerned.

But MPI for MPI is the easy way to go.

 

[yan montego]

Hi How would I easily identify a mpi engine from a spi one
Thanks for the advice

 

[AndyRKett]

Mpi = multi point injection
Spi = single point injection

Count the injectors on the inlet manifold

 

[fingers99]

Or see this. AQlthough it's for Centos (and there was never an 899 Punto in the UK, at least) it's good as a quick visual check.

As Andy says, if there are 4 injectors it's MPI.

 

[yan montego]

so looking the images the air cleaner will be obviously different on a mpi to a sti.version
thanks for evryones help I have found a seconhand engine that I can go and see running today after 4pm its out of a 2000 mk2 punto if its a mpi model it aint gonna work in my 96 spi model.
Thanks Ian

 

[fingers99]

Not as a complete engine, no.

Any Mk2 should be MPI.