I was wondering if anyone would be willing to share their knowledge and experience. I would eventually like to see 300hp at the wheels and would like to get a comprehensive list of all the necessary parts required to meet that magic number. Now to clearify, I'm not looking for a Supercharger replacement system or twin charger. I would like to get as close as possible to 300whp utilizing the stock supercharger.

Thanks you in advance for any information you all can provide.

 

Rotrex supercharger, Turbo conversion, etc. To boil this down asap since this kind of thing is asked frequently, called Jan at RMW (revolution mini works), search, or find another MINI tuner who is closer who can help you. Stock supercharger will limit you to 240ish whp on a dynojet; from what ive seen and thats with essentially every mod.

 

+1
250 ish seems to be the normalish limit....above that you will be doing some very custom stuff....the sc is the limiting factor...meth/water injection will help....but to get 300...nitro time...but that is for a few seconds. From what I have seen, the higher hp guys have issues getting 250 down with front wheel drive....remember, the mini is not a stright line racer...but a fast twisty driver...keep this in mind...and you might be thrilled at 230ish with good drivability/relilability.

 

300 + Hp is already out there. Check Longboards thread on his 300+ journey. He has done it two different ways. $$$ is your limiting factor. Like
Zippy has stated, putting it down to the ground is a problem. If you have the money, you can get it done.

 

"Can't get there from here..."

Not with the stock Eaton supercharger, anyway. I know you stated you wanted to keep that, but like ZippyNH stated, that's what will limit you to 250-ish wheel horsepower, (with a whole ton of other mods, both from less-expensive bolt-ons, and much more expensive inside the engine mods)...

 

Mainah?

Anyways, on a side note: 300hp from a 1.6L is asking for a bit much. 100hp/L is pretty damn good power/weight as is. To put that into perspective, imagine a 5.0L mustang producing 500hp from the factory, or if the 8.3L vipers produced 830hp, etc. The E8?? (last gen) M3 produced 333hp from a 3.3L. 180-200hp/L is practically Formual1 spec. With one exception: <insert absurd hp figure here>RB26DETT, but that's with turbochargers the size of your head and a set of horribly evil cams.

As the saying goes, no replacement for displacement. You might get the best bang for your buck by changing the pistons and crank to "stroke" you an extra 0.2L and doing some extensive head/valve/cam work...

 

I had fun yesterday working course on the inaugeral NER event, where a 300 HP Civic Si was running in Street Mod.

He'd open the throttle for less than a second here and there, but never more - much like driving a Z06 I imagine, except that...

Whenever the throttle was open the car went straight. If the front wheels were pointed ahead then the car lept forward like a raped ape, but if the wheels were turned it didn't matter - the car still went straight forward at a high rate of speed.

This lead to an interesting driving technique on a RH sweeper in my section of the course -- the Si would turn the wheels a bit right and open the throttle, producing an impressive growl and a very quick crabwise leap toward the braking area. As soon as the throttle was closed (and without changing the wheel angle) the car would turn in and line up in the braking area for the next left hander.

I expect the driver could spin the rather wide and sticky tires he had in any of the bottom three gears with just the throttle, and perhaps the bottom four.

It looked like tons of fun, but to the point of the previous poster, I would not expect that kind of setup to last very long.

Cheers,

Charlie

 

It's been done here on NAM and from a 1.6. You don't need a turbo. Do a search on Longboards car. Head, cam , header/exhaust, rotrex, meth kit.

it just takes $$$$$$$$$

 

That's just it; Longboard did it, but not using the stock Eaton blower. You mentioned one key piece of information, Rotrex supercharger...

 

450Cfm is roughly 300hp worth of air (at the crank).
Follow this graph for the factory supercharger on up to 18,000 rpm and that's right close to 450cfm....
http://www.rbracing-rsr.com/turbo/TurboMaps/M45flow.gif
The problem is you look at the next graph at the power consumption needed to spin the thing at that rpm...
http://www.rbracing-rsr.com/turbo/Tu...s/M45power.gif
Yep 18,000 rpm is near 50hp in power consumption
Then look at this graph for the temp change....
http://www.rbracing-rsr.com/turbo/Tu.../M45deltaT.gif
Yep that's a temp change of near 225 degrees....
Of course this is all well off the map so your following lines off a graph but you get the point.
Factory blower won't do it, by the time you subtract the power consumption and factor in the heat!