cc1 said:

I think the 1.1 engines are underrated. They are lighter than the 1.2 so there are a fair few Kg's advantage there. Performance exhaust manifolds are easier to get and these do make a difference with engine characteristics.

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The 1.1 and 1.2 8v have the same head, a performance manifold would fit both really.

Not sure if the block height would cause the 1.1 performance manifold not to fit the 1.2.

Razman said:

The 1.1 and 1.2 8v have the same head, a performance manifold would fit both really.

Not sure if the block height would cause the 1.1 performance manifold not to fit the 1.2.

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My 1.1 Supersprint won't fit the 1.2 Neither does the 1.1 CSC.

yep, 1108 4-2-1 will not go on a 1242 they are too short. You can do it the other way round but it hangs a little low - not so low its not drivable though

So how much are these performance manifolds or whos are the better ones

They're not cheap!

About £150 and up. SuperSprint or John Ashley (Ashley will be cheaper).

TBH while worthwhile, I'd put it a fair way down the list, after a 40mm TB, Uno inlet manifold, P75 cam.

So whats most effective then

i would say myself that on their own none of them make a huge difference, but by the time you have a cam, uno inlet, bigger TB, 421, decent exhaust, high flow CAT, decent induction, perhaps a head skim you have something which is significantly quicker than a stock car, probably about 25-30bhp extra - which doesn't sound much but 75bhp is almost 50% more power over stock. At which point you would be looking at either 1242 bottom end which would jump up the power a bit and also the torque and/or getting the head ported and flowed.

Doing one at a time though you can't really feel the car as being faster it just feels like it breaths and revs more readily.

The only "Dear God, we're going to die!" mod is a turbo or a 1.4 16v.

But 70 or 75 bhp in a car weighing 700kg or so is still very exciting.

What about mccritch chip then and for the parts uno inlet ect am I trawling breakerz yards or is there any websites to recommend

It's fine. You'll eventually find a P75 cam in a scrappy. Maybe a Uno inlet mani (although there was a German tuning firm doing ready ported ones as tuning parts). 40mm TB from sparky, for a decent CAT you might try a Rover KV6 one (about the right size, cheap, and should flow well). from memory -- check for a post from Woj -- folk have made Polo manifolds fit.

For exhausts, watch the classifieds, or talk to Cybox.

Ill start looking thanks