I love to crap
zetec exhaust manifolds
whats the difference in the science behind 4:2:1 and 4:1 manifolds - i.e. whats the pro's and cons of each type? which would be better to get.
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World Champion
Re: zetec exhaust manifolds
A 4-1 manifold is supposed to have a higher power output but at the expense of mid-range torque. A 4-2-1 manifold has great mid-range torque and good maximum power. In Practical Performance Car they tested both and they gave the same max power but the 4-2-1 had the better mid-range torque. Go with a 4-2-1 manifold if I were you.
Richard
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World Champion
Re: zetec exhaust manifolds
4-1 easier to fit a turbo to
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World Champion
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I love to crap
Re: zetec exhaust manifolds
ok thats what i wanted to know, the 4:2:1 will be what i get.
i've just ordered some nice cams for it, which is nice.
early part of next year i was thinking of putting on this supercharger thingy. i have found it for £1300 and can fit it myself. it gives 60bhp. so with the other mods and the manifold, bigger injectors, better MAF, chip, etc i will be in the region of 220bhp. dunno if i will still want to run NOS on it aswell, might as well for a laugh!
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