New Throttle Body on MC = 175bhp?

[minicooperfinland]

Hi,

has anyone changed the throttle body on their MC. MaxPower magazine says with chip,exhaust,filter and changed throttle body u have 175bhp on a Mini Cooper.

Where could I get one in Europe?

[robfenn]

Max Power speak .

You'd be looking at individual TB's for that kind of power, not an enlarged one, which seems to be what you are implying. All of that would cost a few thousand i would expect.

-Rob

[robfenn]

p.s I know someone with a Clio 172 with TB's, after tons of setting up i think it was a gain of 50bhp.

-Rob

[RedUn]

Quote: Originally Posted by minicooperfinland

Hi,

has anyone changed the throttle body on their MC. MaxPower magazine says with chip,exhaust,filter and changed throttle body u have 175bhp on a Mini Cooper.

Where could I get one in Europe?

don't believe wot u read in them mags.........nope never heard of that!

your lukin at 135 bhp with exhaust, chip and filter so yer talkin a 40bhp gain just from a throttle body which wud be more like 6-10bhp, if it was throttle bodies i.e. 4 of em one for each cylinder u wud have a better chance but i don't think u wud achieve it without some head work and a manifold.

the main thing tho is wud throttle bodies fit on a mini!! there aint exactly loadsa room under there so unless they come up with sum really fancy manifold I don't think they would fit my self.

and another thing to consider wud be yer clutch and gearbox, now if u have an 04 cooper you shud be ok but if it's an older one with the old gearbox and clutch I wudn't be trusting the std setup for very long.

the average price for throttle bodies is about £2000 and then you would need other stuff to go with them so if u sed £3000 at the cheapest it's easier to get a turbo conversion or an S.

hope that was sum help

[robfenn]

I would agree, get an S. You have to worry about reliability, servicing and the fact you have no warranty left..

But if your racing then the idea is fine. You will need a specialist to come up with a kit though as a one off will cost you upwards of £5k. Jenvey sell TB kits for about a grand for popular engines..then you get the ECU etc. Thing is, doubt the Chrylser engine is good, unlike a Vauxhall 1.6 where you can get about 240bhp from TBs and headwork!

I think TB's would fit, just not huge trumpet perhaps, remember some of the engine is removed to put them in in the first place.

-Rob

[tuscan_thunder]

Max power? Mock power more like!!

this wouldn't achieve 175bhp. with a K-series, adding a bigger body gives about 10-14bhp. you have to remap the engine, change casings, inlets and exhaust as well just to get a slight increase in power. so say, 125-130 bhp for inlet and exhaust then bigger body so about 140 is your lot

a set of bodies wouldn't fit in a mini, i reckon. even if they did, you'd need huge inlet valves, bigger exhaust valves, a remap, new fuel pump, fuel regulator, bigger coils etc to get enough spark, and new cams. and you still only get about 180bhp if you were lucky. and that little lot would cost about £4500 to £5000 including set up time. and you'd get about 10mpg. or, as said earlier, you could buy an S. or keep the cooper AND build a westfield for the same amount of money!

[minicooperfinland]

Okay, okay... I'll get an S... Maybe that's the easiest!!!

And tuscan_thunder > I'll stop reading Max Power

[wendle]

175 bhp (or more) on throttle bodies is not at all unrealistic - they do fit, but the engine needs completely remapping - not an off the shelf software upgrade - mapping for the actual car on a rolling road.
Have you seen the route the tiny tuned length inlets take on the MINI and how much simpler and more direct a TB setup is? Its a much purer setup. They get great results on many cars.