Putting a 1.2 head onto a 1.4 SR

[*novadose*]

I have a full 1.4 SR engine and a full 1.2 engine so which bits will i need to swap to make it fit? has anyone had first hand experience of doing this and what advangtages can be had?
thanks
Dave

[Stuart]

a) the sr and non sr engines are the same (unless your in the early years of novas then there was a mild difference)

take the head off the 1.2, get a 1.3 inlet manifold and then fit those parts to the 1.4 engine. you should have a bit more go from the off then.

other than that it should all be the same (dont forget to keep the 1.4 dizzy,coil etc)

[Snowface]

this 1.4 sizzy/coil thing comes up again. Whats so good about it compared to the 1.2 coil/dizzy?

Also use the 1.4 cam. The 1.2 cam won't fit the 1.4 dizzy i think.

[Stuart]

the 1.2 unit is big and a lumbering

and no one has really used one in "hard use" applications where as we know the 1.4 setup works well.

[Snowface]

i see.

so is the 1.4 dizzy Delco Remy or is it still Bocsh?

[Aragorn]

1.4 is bosch HEI system

1.2 and 1.3 are a delco system which isnt as good

[*novadose*]

righto, cheers. I plan to run a twin 40's from a sport aswell if i can find them so which inlte manifold will I need? Will using a GSi exhaust manifold and downpipe make any difference aswell as a GTE/GSi cam??

[Snowface]

Black dizy cap is Delco right?
and red is Bosch?

the only problem is running a 1.4 dizzy is that you need a 1.4 cam, as the 1.2/1.3 cams don't work with the 1.4 dizzy, as someone on here found out. (forget who).

[*novadose*]

when i take the head off, it just unbolts and bolts straight back on with new gasket and strethc bolts right? No valves or anything to refit is there??

[Snowface]

no. you'll have to undo some water pipes and take the tension of the cambelt (water pump or tensioner whichever) to takeit off the pulley.

best really to get a Haynes manual as it tells you exactly what to do.