turbo + supercharger?
Turbo Mini Forums

i've got a metro turbo engine, which i am about to rebuild and tune, but i wanted to try something out, and wondered if it has been done before.
basically i want to supercharge my turbo engine, whilst retaining the turbo at the same time.
so i would be running a rebuilt engine (probably in 1293 form) with a turbo AND a supercharger.
has it been done before and/or is it possible,
what troubles will i have etc.
any help will be appreciated.

MAtt

turbo=blowthrough carb

supercharger=suckthrough carb

I suppose you could use the turbo suckthrough but no intercooler=low boost

Metro turbo weekend driver,Mini turbo in the making again!

I don't see the point?

A well set up high spec 1293 can produce up to 200 bhp!

Why bother going to the extra expense and ballache of fitting a turbo and a blower?

i just wondered if it could be done, and was going to give it a go.
i just like to try new things out. if people didnt try new things, we'd all be doing the same thing, and everything would be boring.

It can be done, it has been done, and it's about to be done again by a major OEM who's done a little supercharging in the past...

Well, the spercharger isn't what'll be force-inducing the engine at higher RPM, the turbo is.

So, it'll make exactly the same peak power as it would with just the turbo.

so basically the peak power will be the same, just the curve will be different as there will be more low down power?

It has been done before by nissan

http://www.modifiedcars.com/cars/925.htm

The problem would be changing over from supercharger to turbo at the point the turbo starts producing more boost. Some sort of clutch and valve system on the supercharger I would assume, don't know though. Seems like a lot of trouble for little gain IMO.

I would love to see it running though, the flat torque curve theoretically possible would be quite impressive.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

A Mk1 XR2 that often goes to Pod has a supercharger blowing into a turbo charger, at a certain boost the S/C boost is diverted and the turbo takes over.

Not entirely sure off all the in and outs of the machine but in runs 12.5(IIRC) with a squirt of N20.

Thats the Power Engineering fester I think.

Alex

AlexF

lancia in 1985 too

http://walkersgarage.co.uk/s4_new.htm

Metro turbo weekend driver,Mini turbo in the making again!

ive read about a cossie that does this, i think it used a lawnmower electronic clutch to disengage the supercharger at a certain rpm

new golf gt is going to use both(google)

Metro turbo weekend driver,Mini turbo in the making again!

Yup, using an Eaton supercharger and 'switchover valve'

Knew about this a while back

i bet you could use an airconditioning compressor clutch thingy in the supercharger to engage and disengage it.

seems like a lot of hassle and space would be very limited in a mini

no longer a series, but still 1.3 turbo.

Swedish Opel Manta whit Volvo B230 engine whit turbo + supercharger.
http://www.hilmersson-racing.com/start.asp?show=j

The sound from the engine is crazy!

Edited by tellskog on 13th Nov, 2005.

that thing its nuts! i love it!

NO LONGER A <3 lover of BOLT-ON plastic <3 .... (and DOUBLE proud of it)

pretty much all big boat deisel engines, (ie, 40-50', no cross channel ferries!) use both a supercharger and a turbo, have done for years!!! no reaon why it couldnt be done for a car, and by the looks of things has been, but dont really see the point unless you just like being different (nothing wrong with that!!)

And on the 7th day........... God created turbochargers!

Dave, I'm aware that in the US, there are cheap Mazda Millenium blowers available, lysholm type with an solenoid operated de-clutch, they go for about $200 and I'd like to see one and see how big it is, 1L pass. That would probably be as good as a blower/turbo. I think eaton S4 blowers are crap looking at the maps, they work though

Bugger off, I'm getting there.

Don't know Stu - If you locate one and need assistance with shipping, i'll see wha i can do...

Nice to hear from you again Stu.