Mini Cooper S Supercharger

[The Big Yin]

one of my friends has told me I can use a Mini Cooper S charger on a hachi, All i need to do is get mounting brackets made up and also the piping made up, which wold all be cheaper than buying a supercharger ready made for the car.

you can pick up a supercharger for about £100

check this auction
http://cgi.ebay.co.uk/mini-supercharger_...dZViewItem



what do out more techincally minded members think

[irishtwincam]

Why dont you just by this supercharger kit?

http://i34.photobucket.com/albums/d145/e...220045.jpg

Its here in stock as you can see.

sc12, all brackets, pulleys, sensors and manifold.
The cost of the kit will include the wiring conversion, youll have to send us your engine wiring loom.


I your not toying with a pipe dream and have about 1,450Euro to spend email/pm me.

[The Big Yin]

i can have that built for about £500, know alot of people who can fabricate the parts i need, putting a charger in the car is way way way @ the back of my mods list, just sounding the idea out 2 c what people think. i might not even do it, because with my currrent plans engine shud b about 190bhp

[Matt Skinner]

Go for it! Supercharged beats N/A hands down in my opinion. Its just like shoving a bigger engine under the bonnet. The way the engine produces power will be basically the same as the same spec N/A just will produce a lot more of it!

[BenR]

yea, easy.

You'll need to fab up an inlet manifold plenham/mount for the eaton outlet.

And if you get a cooper S charger, get a later post '04 gen 5 charger. This is basically the same as the earlier JCW chargers with a new type of coating, and can provide more power.

You'll have no power building a high output engine.

[Mux213]

But how will this perform on a stock 3 rib engine? Wont it just rip the engine appart? Also wouldn't you need to change the compression on the engine? There is a reason Toyota made the engine stronger for the GZE...

Otherwise this does sound like an interesting thing to do for a cheap GZE solution, even if it may not last, if you can fab the parts cheaply and you dont mind risking blowing the stock engine, it can be a fun project.

irishtwincam, how are your experiences with this? For now I am happy with my stock engine but I have been thinking about going supercharge in a year or two when I'm finally ready for some more power. Seeing as the GZE gets harder and harder to find, I wouldn't mind going for a quality solution. A full GZE block here in NL would set me back about the same amount so it sounds like a good deal.

[Matt Skinner]

Mux213, as I said in another thread, keep boost low and compression shouldnt be an issue, especially on the earlier engines as I believe they run a lower compression ratio anyway!

I highly doubt it will tear the block apart. I've seen 240 + hp put through an Austin A series engine (1293cc). Thats got a piddly 3 main bearings and are not exactly a rigid block. It chews up bearings, pistons, camshafts and gearboxes but the guy is yet to ruin a block beyond re-use. A 5 bearing engine will survive it easily I'd expect.

As I understand it the 7 rib blocks are a nicety, not a necessity.

[NoHachi]

It isn't quite as easy as just fabbing up some brackets and a manifold.
Supercharger systems are extremely sensitive to pulley allignment. Get that wrong and you create a world of trouble for yourself. Don't forget that the forces on the belt and pullies ramp up to several horsepower.

The extra force on the engine should be negligable...nowhere near the extra force that you would experience from for example 1000rpm more. Your biggest problem will be heatmanagement and the associated knock/detonation. What u see a lot is that supercharged system tend to heatsoak on hot days, during congested traffic conditions. Cooling of the engine and the intakecharge needs to be excellent.

You could try and run the stock ae86 map system alongside a larger injector that injects fuel under boost, before the compressor. U usually get better atomisation and some cooling of the compressor. This at the expense of increased wall-wetting.
Be VERY carefull about running superchargers along with wilder cams. Though turbo systems seem to react well to this kind of mod (forget the whole blowby bla bla, high rpm efficiency equalls HP, no matter what the pressure differential is), superchargers don't like it.
Any sign of low rpm backfires etc and you get interesting effects. The pressure in the mani increases tremendously and (due to the compact design) has nowhere to go/expand...most parts don't like that...used to blow up 2 carbon fibre intake manifolds a night before we got the mapping where it wouldn't act like a handgrenade..