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Rust bucket
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Postby Rust bucket » Sun Jan 22, 2012 8:43 pm

Hi, I want to up the power of my standard 1098, the engine is in good condition and I was thinking of fitting a 12g940 head, bit bigger carb,better exhaust system and maybe cam change.
Can anyone tell me of the possible increase in BHP this will bring, or would it be better with a standard Ford crossflow 1100/1300 and box ,thanks.

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Re: Power

Postby bmcecosse » Sun Jan 22, 2012 9:54 pm

Don't bother too much with cam change - the 1098 engine can't be revved - so the existing cam is fine, although an MG Metro cam may give a couple or three of extra horses. 940 head + 1.5" carb on alloy inlet = ~ 60 bhp I didn't really notice any massive improvement when I then fitted a large bore/straight through exhaust. You will want a lower ratio final drive for sensibly calm cruising...... The head and carb/manifold can be done for £50 if you buy wisely......best power /£ you can do. Obviously a Ford conversion will cost much more - but will presumably give you a more 'modern' engine.
Last edited by bmcecosse on Sun Jan 22, 2012 11:46 pm, edited 1 time in total.

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Re: Power

Postby chrisd87 » Sun Jan 22, 2012 10:22 pm

I doubt a standard crossflow 1100 would be worth the hassle, as the A-Series with the kind of simple modifications you describe will provide more power. Personally I wouldn't bother with the 1300 either, as you may as well use a 1275 A-Series (getting fairly expensive these days, but still out there). A 1600, on the other hand... :P

Obviously you'd also need to fit something like a K&N air filter if you were to get the best out of the larger carb, etc.
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