1.2spi to 1.4spi engine conversion

[paul james]

i was wondering how easy it would be to change from a 1.2 single point injection engine to a 1.4 single point injection engine (not 1.4 sri). It seems like the exhaust, fuel tank, pump, wiring e.t.c would all be the same. So could i just pull the 1.2 out and do a straight swap, and then just unplug the 1.2 ecu and put the 1.4 one in without changing any wiring?.

also are these 1.4 engines quite rare?, and anyone know the bhp difference?

[Jack]

1.4 spi isn't that rare afaik, found in any late Mk2 1.4s (non-SRi ones obviously). I think the same engine also appeared in corsas?

1.2i = 50bhp
1.4SPi = 60bhp

...so there's not that much difference in power.

[Ste_Nova]

1.2i 45bhp

[Aragorn]

if your going to the hassle of swapping the engine i would reccommend getting a 1.4 sr camshaft and an 1.4 SRi manifold (with lambda probe) and GTE downpipe and system

this should give u about 70bhp which is similar to an SR and much more lively than the standard 60bhp

and yes all u will need is the 1400 ecu and the 1400 engine - wiring loom is all identical - just make sure u use the TBI unit from the 1400 as the injector is bigger

[mikeyredtop]

straight swap mate i did the same from c14se to c16se just cahnin the ecu :D

[Ojc]

Sorry to intrude, but will a 1.2i 8v fuel tank and the lines be good enough for my X16XE conversion? I would change the pump for either a external Corsa one or a internal GSi 8v one.

Would this work ok?

[paul james]

and yes all u will need is the 1400 ecu and the 1400 engine - wiring loom is all identical - just make sure u use the TBI unit from the 1400 as the injector is bigger

when u said TBI unit, is that what u call the injector housing that looks a lot like a carb???

thanks

[Aragorn]

TBI = Throttle Body Injection - which is the thing that looks a lot like a carb ;)

and the 1200 tank is fine just get a in tank pump from a corsa gsi and chop the little fin off the back of it so it fits

[Jack]

1.2i 45bhp

i thought the 1.0 was 45, 1.2i 50 and 1.2 55? Or am i 5bhp over each time...?

[Stuart]

the 1.0 and 1.2i have the same power (cat ;) )

then 1.2 carb 55
1.2 NV carb 53

[Ojc]

Cool, what about the fuel lines? Are they thick enough for the X16XE being that its a 1.2i 8v?

[Aragorn]

yer im running 1.4 spi astra lines on my mpi engine and they are fine

[Snowface]

1.0 - 45bhp
1.2i - 45bhp
1.2SB - 55bhp
1.3S - 69bhp