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Extra power... how much does it cost?

Posted: Tue May 19, 2009 7:25 pm
by Niall
I have been fantasising about turning my mk2 into a track day car when i'm finished with it. I was just wondering what I could do to to get maximum hp out of it.

Hypothetically if I had £1000 what would be the best course of action... I'm 17 and I read maxpower so my thoughts automatically jump to ramming it full of NOS and throwing a turbo into it... which seems to work in Fast and Furious :chortle:

just wondering on what you guys (and girls) thought is possible when creating a racer? Are there any tricks on tweaking your engine which the insurence company dosent know about?

What do you think?


*This is a purley hypothetical discussion so less degreasing more flamethrower exausts

Re: Extra power... how much does it cost?

Posted: Tue May 19, 2009 7:36 pm
by Boumsong
Generally (upto a point) 1bhp costs 10 of your finest pounds.

Aftermarket cams - £200 and can generally see 14 - 20bhp gains providing you couple them with head work (port/polish/skim) and a decent exhaust manifold. Again, you'll be looking at 5/6bhp gains from a decent smooth induction system to theres another £60 gone. I'm not sure what a decent manifold costs, but aim for something tubular and 2" diameter.

That's just about all you can easily achieve, unless you really fnacy getting your hands dirty. In which case, get the block rebuilt, either, high compression pistons and go for a mega revvy N/A set up. Or low compression and start looking at F/I. Though your talking serious money for a good job.

Superchargers CAN be done on the cheap, but generally you're reliability will suffer.

Failing all that, get the thing stripped out - Throw EVERYTHING you don't need away..Even some things you do need, throw them away as well. Ultimately, how fast you go depends on the power to weight ration, no point having 6000bhp if the car weighs 15000 tonnes. But 160bhp in something weigh 800kg gives 200ish bhp per tonne. Aim for that.

Re: Extra power... how much does it cost?

Posted: Wed May 20, 2009 8:40 am
by roccodave
2.0 16v on bike carbs tubular exhaust mani and a decent system port n polish the head then fit cams
then strip out everything as stated above
a flamethrower exhaust will give you 0 bhp
there is no real need to degrease everything to make it look good a nice layer of oil and grease should stop it from rusting so can be an advantage {thats what i tell myself when i open my bonnet} :good: