17 replies to this topic

[deakin1988]

Hi I'm thinking about getting a superchager. Looking at them there lookin like the ones on BMW mini is that right if not what are the brand of the supercharger And what are the down sides of fitting them

Thank you

[Turbo Phil]

There's quite a few kits available for the A-series, the Eaton M45 from the BINI is often used as it's cheap & easily available, though it's certainly not the most efficient if maximum power is your aim.

Phil.

[HarrysMini]

One downside of supercharging is fuel consumption, it'll go up considerably.

[deakin1988]

Well I'm wood love to get into the a-series 100bhp club and I was thinking that supercharger would the the quickest and cheapest or would I be wrong

[Turbo Phil]

You'll easily make 100hp and more. I'd say a Turbo conversion will be just as cheap & can give better results.

Phil.

[deakin1988]

What are the best turbos to use and are there not harder to install

[HarrysMini]

But supercharging is more interesting. Every man and his dog has a turbo. 

 

Superchargers produce a better power/torque curve as well

[sonikk4]

Have a good look through some of the various projects with regards to supercharging over turbocharging. Both have their pros and cons and judging by what i have read on some of them, the turbo will win hands down on producing the most power. 

 

I think though the supercharger whine will be addictive.

[Gr4h4m]

Turbo will make the most power by some margin, the downside is they don't really come in kit form...

[HarrysMini]

A turbo will make more power, that's given. However, it's arguable that the power produced from supercharging is more useful than turbocharging as there's more low down torque and no turbo lag (of course, with small turbos, there's not much lag anyway)

 

Superchargers sound better too

[coopdog]

A turbo will make more power, that's given. However, it's arguable that the power produced from supercharging is more useful than turbocharging as there's more low down torque and no turbo lag (of course, with small turbos, there's not much lag anyway)
 
Superchargers sound better too

Lol I thought the exact opposite of every you've said on this thread :L

Loads of people supercharge I think it's a lot more common and turbos sound way better!! Haga

[fulltiltbrian]

I have a 45 Eaton on my 1310 cooper. I got the car from a guy who'd trashed the car so I set about rebuilding it. I found the engine was in near perfect condition, no wear, nothing broken, so I don't believe its necessary to make major mods to it or the gearbox. Even the diff was fine, though I changed it for one with longer legs, it now has a 2.77. The power is substantial, lots of torque from low revs and a very illegal top speed.

Tuning is difficult and has to be very precise,  fuel consumption is scary and there is an inherent problem with the intake design of the most common kits in that when you shut off the engine, fuel travelling uphill from the carb to the supercharger simply falls back down and flows out of the carb. Its an mot failure. Someone at Jonspeed said they drill a hole in the carb between the venturi and the float bowl. In thought this couldn't possibly work as the necessary vacuum in the venturi would be lost. Sure enough, the car wouldn't run. Now I'm about to fit an American carb - an SS 'Shorty'. 45mm, very low profile, usually seen on big (1800ccs) Harleys. should fit alongside the supercharger, right under the bonnet on a short modified manifold.

If anyone has another solution to the problem I'd love to hear it. 

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[maccers]

Fuel Injection

[Gremlin]

If you've got an electronic fuel pump fitted on a separate switch, turn it off before you wish to turn the engine off and let it starve itself of fuel, after doing it a few times you will be able to turn it off at the bottom of your road or as you come off the main road so that you don't have to wait very long

[Gr4h4m]

fit an SC12, or a Sprintex, the intake is very short and inline.

 

Injection sorts the fuel economy, well when cruising on the motorway.

 

A carb'd charger will only give a max of about 26mpg.