Supercharger question

[polaroid]

Ive been looking through the supercharged threads and most people are using the rotrex charger that is the same shape as a turbo.

Could a cooper s charger be used on a Clio? Ino they have a top mount cooler horn on them but this can cut off and fabricated to fit a front mount.

The cooper s charger I would imagine would be conciderably cheaper. Is there any other reason they are not used on a conversion? Thanks

 

[tom172cup]

The Rotrex is a good bit of kit. there is not a great deal of room in the engine so dont know how big or shape of the mini's charger is. but i presume you would need to fabricate new mounting brackets for it to fit.

 

[Chip-mk1]

Mini one is a bit pants really, wont make a massive amount of power as they barely get over 200bhp, and would be a right pig to fit in the bay with so little space.

also because its a displacement charger rather than a centrifugal one, its not well suited to high compression

 

[DannyR]

Looked into this before. Fabricating a pipe which goes from the square to a 63/70mm pipework is easy and can be done to run it. Mounting it is the difficult part as its rather large.

I didn't know that they weren't great for higher compression, but before researching that I already saw it was pointless!

 

[M4D M4X]

I looked into this some years ago for my m3 so bought a JCW charger and also this to understand the instulation and how to setup.
http://www.amazon.com/gp/product/0837601681/?tag=cliospnet01-21

After reading the book there is 3 types off superchargers screw,centrifugal,roots all of which are diffrent and also deliver the power.

The "turbo shaped" is called centrifugal and delivers the power with a good solid curve and power throughout the rpm range.
The "mini style" is called roots blower and delivers the power upto 5000rpm and starts to drop sharply.
The "blower sticking out of American car bonnets" is called a screw compressor this is simillar power output as the roots but towards the end power range it doesn't drop off so sharply.

If your serious and thinking off doing this to your Clio i'd suggest a centrifugal "turbo shaped" to save on room, but before forking out on a charger buy the book i linked up their is alot to take into account some of which is like Einstein calculations,
E.g working out air pressure before and after the charger also how much air to cool and what intercooler to use and how many fins.

Hope this helps.

 

[Chip-mk1]

Its not the case that a cooper charger is only good at 5k engine rpm, it would depend how it was geared, I know someone who used one at a bike and it worked ok at 10K rpm, but it was much lower geared.

The key thing about them though, is that whatever rev range you match them to they will work best in the middle of it.

Its this which makes them unsuitable for high compression, the only way you can use a displacement charger with high comp really is if you use a much larger charger so you can use the charger in its midrange while the engine is at its top end, ran like that a cooper m45 charger is only good for about 160bhp really, so ok for a small capacity engine but no good on a 172.

 

[joshclio999]

Mini one is a bit pants really, wont make a massive amount of power as they barely get over 200bhp, and would be a right pig to fit in the bay with so little space.

also because its a displacement charger rather than a centrifugal one, its not well suited to high compression

Are you on about not making over 200 bhp when put on a Clio or in general?

Just seen your last post. Most minis are more powerful than the book figure would suggest, for example, mine ran 177whp before any mods on what is considered one of the more accurate dynos.

 

[M4D M4X]

Yes that's true but don't think the op would have thought about looking into the gearing to gain the most even output or even to change the way the power is gained through what rpm.

Even if he was the easiest way would be to change the pulley as changing the internals would be a nightmare and probably have to be custom made parts.

I think there's a company that sell a smaller pulley for the standard mini cooper s charger to gain extra power iirc

 

[Chip-mk1]

Are you on about not making over 200 bhp when put on a Clio or in general?

Just seen your last post. Most minis are more powerful than the book figure would suggest, for example, mine ran 177whp before any mods on what is considered one of the more accurate dynos.

I mean in general, they get pretty unreliable if you try and use the standard charger over 200bhp.
If the rollers you use are accurate it sounds like the ones I use must under read cause Ive never seen a standard cooper doing 177 @ the wheels, lol

 

[joshclio999]

Do you have any evidence to prove they are unreliable over 200hp, as there are lots of minis running more than that (some considerably more) on the 5th gen m45

 

[Chip-mk1]

Do you have any evidence to prove they are unreliable over 200hp, as there are lots of minis running more than that (some considerably more) on the 5th gen m45

5th gen ones like on the works are a lot better, but the ones that tend to be knocking around cheap on ebay etc arent generally 5th gen ones, apologies should have been more specific about what I was referring to.

The "standard" M45 is unreliable if you go much past 200bhp.

 

[scotty2hotty81]

Someone has fitted a screw type charger (like mini) to a ph1 not 100% if they are on here but I'm sure there is a vid on YouTube lots of custom stuff needed though so in the end it might be better fitting the rotrex

 

[Chip-mk1]

Someone has fitted a screw type charger (like mini) to a ph1 not 100% if they are on here but I'm sure there is a vid on YouTube lots of custom stuff needed though so in the end it might be better fitting the rotrex

The rotrex is just a far more suitable charger.

About 20 times the cost though if comparing to a 100 quid M45 secondhand (used to be readily available at that money or less with almost no miles due to the works upgrades taking them off)

 

[M4D M4X]

Someone has fitted a screw type charger (like mini) to a ph1 not 100% if they are on here but I'm sure there is a vid on YouTube lots of custom stuff needed though so in the end it might be better fitting the rotrex

The mini is not a screw it's a roots charger differents being
Roots

Screw

 

[polaroid]

Thanks for the replys. I was looking at v6 clio but i could only afford a ph1 vee and wouldn't be happy with that.

Think I'n going down a similar route to Dannyr with this one. Might be a few months yet tho.

Need to decide whether to do this to my 182 or sell the 182 and buy a sunflower yellow ph1.

Hate ph1 vee's but like 172's.

 

[polaroid]

How's this look?
Terrible discription I no. Think I'll email the seller for abit more info

 

[Jonny1*2]

No link pal

 

[polaroid]

http://item.mobileweb.ebay.co.uk/viewitem?itemId=230726162197&index=0&nav=SEARCH&nid=44397199892

 

[scotty2hotty81]

Rubbish description! You need to get model number and ask if it comes with the oil cooler and resivour but yes that's the one.

 

[polaroid]

What's the difference between a rotrex c30-94 and c35-94

 

[DannyR]

Go on Rotrex website, loads of info

 

[polaroid]

I've had a quick look but it's a knightmare to navigate on a phone.

Spotted this but dont no if it's adaptable to a Clio.
http://item.mobileweb.ebay.co.uk/viewitem?itemId=300646962065&index=12&nav=SEARCH&nid=52001041684

 

[M4D M4X]

^^^^ it does look bulky but with any amounts of money anything is adaptable, as for the kit in general it won't be much good as most is to fit another car so you'd still have to pay to customise everything to fit.

But if you could get it for what it's advitised at, then i'm sure it would be a bargain and wouldn't cost that much in total to work with a F4R.

 

[DannyR]

It's only got a mount and some pipework!

All removable