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Originally posted by karls_car
help please

for my motersport colledge project, we have a car to about 4 people and get to do any think we want to it. and have to c who can get the most power out of theres.. and our teem been given a 1994 1.2 8v corsa, it looks in good shape,

how i knowwe not even probly gona get more than 65bhp out of it,!!!
but these are what we been thinking about...........

can you put carbs on a 1.2 8v, ??

get fly wheel skimed?

kent cam's?

strait through exhaust, maby man fold

just drill air box with filter because i know, induction wont do nothink.

any think else rele need some help,

thanks karl,

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quote:

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Originally posted by johnny27
Tried the following on my nova 1.2

1.2 NZ block, change head to 1.2 carbed head, ported polished skimmed, use the 1.2 or 1.3 carbed heads, stay away from the spi heads and 1.4 sr.

Sportex 4-1 branch manifold. The std 4-2-1 cast iron manifolds from sr, sri and gte are shite compared to this, so even though ppl suggest it don't bother, its not worth it.

2inch piping striaght thru exhaust (no cat or middle boxes.)

Kent AST2 cam

Used to run on twin 40s. Changed to a webber carb with k&n on the 1300sr manifold, and honestly found that i lost no power what so ever over the 40s. Plus it gave the engine abit more power down low 1500 -3000rpm, thats where i needed abit of help cause the ast2 cam give a really strong powerband from 3000rpm upwards so the engine was quite lumpy below 3000rpm. But the 32/34 still provided more than enough fuel for the upper rev range

Also changed the fd in the gearbox from a 3.94 or 3.74 can't rember which, to a 4.18cwp. Was running 14/50/185 tyres with this so there was really good aceleration, would surpise u how much a of difference it makes to the feeling of the power.
In the End the car could beat mildly tuned 1.3, 1.4 sr and 1.4spi mpi. Never had it up against a 1.6mpi, but i would reckon it may keep up with it most of the way. It was lovely to drive, as soon as you floor the boot it responeded by reving its block off, it was very rev-happy, at one time i had it at over 8000rpm altough i would'nt been keen on trying it again lol but it was at 7000rpm regularly as there was plenty of power to be had up there
Obivously it was no rocket ship, it still would of been under 100bhp, after going this far on engine mods, it is'nt worth going any further on a 1.2 bottom end, not worthwhile tuning up a 1.2 bottom end, just change to a 1.4 1.6 and you can still use all the same parts as u have been using on the 1.2. All in all i can say it has been worth the work and money that went into it, was great fun coming from 45hp to to nearly 80- 90 or so.

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