[chris.lamb]

Found this on fleabay :-

MINI Cooper S Super Charger Pulley BMW 17% 220 BHP on eBay, Mini, Classic Car Parts, Cars, Parts Vehicles (item 140150143162 end time 19-Nov-07 07:16:14 GMT)

Anyone here have one fitted ?

The supplier has offered to fit it for £100 extra, sounds like a good deal.

Anyone have experience using Jonspeed ?

Please do let me know.

Many Thanks in advance.

[Richard Crofts]

Never heard of them. Personally I'd stick to the GTT or Alta V2 pulleys. They appear to be the best IMO by a long way

[MiniPetrolHead]

I have just got off the phone to these people and have ordered myself a 15% version of this pulley, so i will let you know how good it is when its put on! ( i opted for a 15% over the 17% as i wont be having a remap yet and there is a risk of pinking so im told by GTT if i go for the 17% with out a remap even though its rare for it to happen..... im a wuss so i opted for the safer option.

Alex

[MINIMANIAUK]

It looks like a one piece pulley,not self aligning,so make sure it is aligned properly during fitment. cant see any any retaining method so I guess its an interference fit,if so hope it does not spin on shaft of charger when loaded (bear in mind 40+bhp is put through it and it is heated from heat transfered from the charger)
how can you adjust the pulley if it is pushed on too far? use a puller?
Is there a warranty on the pulley ? what grade of aluminium is used ?will it work harden?have they been tested?
usually a cheap price has its reasons for being cheap ,and can end up costing more than you think,I have no knowledge of the pulley or its quality,it may be fine,it looks like MPH is the guinea pig for long term testing and ease of fitment

[MINI-Morgan]

Its not made of Aluminium is it? I cant see that being a good interference fit if it is....

[MINIAC]

17% = 220bhp

Is the hole for a set screw or is this an interference fit pulley

Buy a quality tested pulley.

[Richard Crofts]

I got to say, I'm not liking it. The GTT and Alta V2 are far better engineered. I run a Alta v1 but I'm tempted to switch to V2 or GTT when I go up to 17% in the next 6-12 months

[Capsaisin]

Quote: Originally Posted by MINIAC (original)

Attachment 136685


17% = 220bhp

Attachment 136684

Is the hole for a set screw or is this an interference fit pulley

Buy a quality tested pulley.

My thoughts exactly.

Do you have to drill the s/c shaft to stop the pulley spinning around?

Ebay - enough said.

[MiniPetrolHead]

Well we shall soon see if it really is that good/bad when i get it fitted. If its rubbish then i have been mugged, but if it works then great. but how will i know if it is slipping or just not doing its job properly? At the end of the day i only paid £50 for it inc postage as when i spoke to them on the phone i bartered with them so its not the end of the world.

If its rubbish i will just save a bit a get a quality pulley.

[:: Jon ::]

for £50 more you could have the real thing... tried and tested.. and not from some cowboy trying to make a quick £



Lohen.co.uk - Track & Fast Road Performance for your New Mini - Online Shop

[roland2003]

Hi ,whoever you buy from, and whoever you get to fit your bits,check out what warranty they include on the engine. By that I dont mean the parts bought /fitted, I mean the the other (expensive) bits that conjour up huge repair bills if they let go after youve fitted them...eg pistons, engine block,valves etc.
-If you pay £3500+ on a JCW 210 you pay a ridiculous price,but the warranty on the above is there.
-If you buy a pulley, intercooler & manifold etc and get it fitted too , you get zero warranty on the engine etc ..Cheap if it never goes wrong but very expensive if it does.!
-Or you buy GTT210/GTT220..... Parts designed,made, & fitted all by the same company..everything checked before & after conversion. From just £695 + vat PLUS you get engine warranty included. Your also comforted by the fact hundreds of people use GTT conversions without problem, and the best back up service anywhere.
-Its not difficult to see which is the best value.
Best Regards Roland GTT

[chris.lamb]

Jonmorgan,

they are not some cowboy trying to make a quick £
I have vistited their workshop and bought excellent quality & priced parts from them already.

On what evidence do you come to your decision on ?

[Jaw_F430]

Originally posted by chris.lamb
MINI2 Regular

Good value ?


Found this on fleabay :-

MINI Cooper S Super Charger Pulley BMW 17% 220 BHP on eBay, Mini, Classic Car Parts, Cars, Parts Vehicles (item 140150143162 end time 19-Nov-07 07:16:14 GMT)

Anyone here have one fitted ?

The supplier has offered to fit it for £100 extra, sounds like a good deal.

Anyone have experience using Jonspeed ?

Please do let me know.

Many Thanks in advance.

Quote: Originally Posted by MINIMANIAUK (original)

It looks like a one piece pulley,not self aligning,so make sure it is aligned properly during fitment. cant see any any retaining method so I guess its an interference fit,if so hope it does not spin on shaft of charger when loaded (bear in mind 40+bhp is put through it and it is heated from heat transfered from the charger)
how can you adjust the pulley if it is pushed on too far? use a puller?
Is there a warranty on the pulley ? what grade of aluminium is used ?will it work harden?have they been tested?
usually a cheap price has its reasons for being cheap ,and can end up costing more than you think,I have no knowledge of the pulley or its quality,it may be fine,it looks like MPH is the guinea pig for long term testing and ease of fitment

Quote: Originally Posted by MINIAC (original)

Attachment 136685


17% = 220bhp

Attachment 136684

Is the hole for a set screw or is this an interference fit pulley

Buy a quality tested pulley.

To me is looks like it is held in place with a grub screw. It will probably require the pulley being pressed onto the s/c shaft but the method to stop it from spinning on the shaft I would say is the grub screw. Personally I would stick to a 2 piece design. That way it is not a big job when the times comes to change for different pulley size if you wanted to. I have a 15% 2 piece design from MED engineering and have had no problems, been on for nearly 10,000 miles.

Just makes sure the company has a good reputation and speak to the technical guys there, if you are satisfied then go with their product.


Regards


James

[MiniPetrolHead]

The say that you fit this product by heating it up so that its to hot to touch, then put the pulley onto the shaft and chuck a bucket of water over it or let it cool down naturally. then do the grub screw up. Isnt this a similar principle to how the standard pulley is fitted?

Alex

[MINIMANIAUK]

The original pulley is steel and has an expansion rate around 1.7 thousandths per 100degree c
aluminium depending on grade is more around 2.2 thou/100 degree
If you heat the pulley to "hot to touch" to fit ,what happens if it gets close to that temperature during running with heat transfer from the charger? aluminium expanding more than steel (the shaft is steel) it seems to me that you are relying on the grub screw.
no other pulley on the engine is using a grub screw,they are bolted,even the idler pulley,which has no load on it at all.
ease of fitting wise it looks fairly hard ,as pressing on the shaft with the charger still fitted to the car would require tapping the pulley on whilst still hot,with a feeler guage behind the pulley to get alignment,
If you pressed it to far on the shaft ,it would need pulling off a bit with puller(oh er missus)

[1320autos]

I luv the fact that no one has picked up on that a 17% pulley can now produce 220bhp without any other mods.

When will you all see through the Bulls**t Horsepower Predictions

[MiniPetrolHead]

I no that 220 from just a pulley is a bit mad but there are some people out there that will believe this! I have opted for their 15% pulley. i really hope this thing doesnt F*** up my engine!

Alex

[:: Jon ::]

Quote: Originally Posted by chris.lamb (original)

Jonmorgan,

they are not some cowboy trying to make a quick £
I have vistited their workshop and bought excellent quality & priced parts from them already.

On what evidence do you come to your decision on ?

the fact that they are trying to say you get 220bhp from a single 17% supercharger pulley is a load of bull****... FACT

looking at the quality of the product you can see they havent even designed it very well as a slide on fit with a grub screw to hold it in place is by far the worst way of securing the pulley to the shaft. it looks like its just been knocked up on a lathe then engraved... you never know they may have even used a CNC.. but still you can tell they dont know much about the new MINI's supercharger system when they are claiming that a 17% pulley will produce 220bhp..

looks like rolland, lohen, JCW, GTT, ALTA may go out of business if thats the case as all there kits are a waste of time according to this manufacturer of the pulley..

220bhp dont make me laugh

[MINIMANIAUK]

The pulley may work just fine ,I have no knowledge of them,and can only go by the picture , So should I get 240bhp etched on our pulleys? or better yet 250bhp?


Heating and quenching aluminium can alter its properties depending on what type is used and the temps involved.

[Capsaisin]

Quote: Originally Posted by chris.lamb (original)

Jonmorgan,

they are not some cowboy trying to make a quick £
I have vistited their workshop and bought excellent quality & priced parts from them already.

On what evidence do you come to your decision on ?

But presumably when you drew our attention to this pulley and asked;

"Anyone have experience using Jonspeed ?

Please do let me know."

It might have been imagined that you had no idea who Jonspeed were?