I was thinking if it is possible to remove my factory water pump off the supercharger and go with an electric. My FBT head is good for some high reving and my car makes power all the way to 7500 now, but the only weak link is over spinning the water pump. Also wouldn't removing the pump help by spinning less drag?
I was thinking about this at Sushi
Mario

 

No replies at all??

I'm no mechanic but would like to hear what some tech members have to say to this.

 

Switching to an electric water pump is a pretty common thing on V8's it frees up some HP and probably lets the engine spin up more easily, I don't see why it wouldn't work the same way on the mini.

 

I know that the mini that ISELLEM built spins to 8k with the factory pump still in place. No problems so far. I had a chance to ride in it and it pulled very hard.

 

I posted this same question a while ago and got a few responces. there are a # of people running them right now on the turbo only minis. as for the less drag, you would have to assume so. if you go this route keep me posted, I started to look into the parts for it and figured I was over my DIY head.

good luck if you go for it!

here is my thread on the subject, not many responces but a few:
https://www.northamericanmotoring.co...ric+water+pump

 

Thank you for the info, I wonder what this would cost me in parts? I know I could pull at least 10whp or more, with it off and spinning my car from 7500 to 8000 or so. I would be really close to the new 250whp mark. Today I was one car length ahead of a 02 V8 Camaro with intake, exhaust and chip, we went head to head from 40mph and up up up... an extra 10whp would really crush that Camaro. My friend was in total disbelief over how well my Mini did against his hot rod. I told him wait till we race in the canyons. lol
M
M

 

Certainly can be done, I think once you start spending time above 8k you're going to find other things start breaking .

 

You reallly think the mechanical WP pulls 4% of your HP, net of the power required to spin the electric WP?
They have an electric with the M62 kit, so it's certainly doable, but I can't see that it would get you THAT much power.
As you said, if you want to show superiority (FWIW), take a turn or two.

 

contact Dave at DDM works..... I have an EWP with the 62 he fabricated and have had it for 20K with NP

good luck

 

It is not so much the drag of the water pump but it will allow me to pull an extra 500rpms, without over spining the H2O pump. My car makes power to redline so thats where I'm hoping to get the extra power. I'm guessing I would have my software remapped.

M

 

You're going to have to run a reduction pulley on your alternator and/or an underdrive pulley on your crank so you don't overdrive your accessories. I'm pretty sure with the water pump out the only accessory left on the belt is the alternator. So you could probably get away with just the alternator underdrive (Alta has one).

 

very good point and it's cheap, just the way I like it.

 

You might want to check again, the MCS water pump is not an "on the belt" accessory.

 

The water pump is bolted onto the opposite side of the SC from the belt. If you go turbo only with no a/c compressor than the alternator would be the only thing left on the belt. Also although I don't really know much about it, RMS tuning in germany had an electric water pump kit based off of a BMW 6-series water pump that they claimed was good for a little north of 10hp. Depending on your budget and/or german speaking skills this might be an option.

 

the water pump spins on the back of the superchager

 

By on the belt I mean it's driven by the belt (Which it is, regardless of whether its bolted to the SC or not )

 

Whoops! Forgot about the AC compressor. I don't see any harm in leaving that alone, at redline the clutch slips it anyway and your AC shuts down.

Here's me thinking MINI came up with some space age magical AC system that doesn't use an engine driven compressor .

When are manufacturers going to start making AC systems that work with the engine off! In the Mercedes C you can run it at limited speed with the engine off .

 

Thanks for clearing that up, Mario

In a sense, this is correct, just not very accurate.

Your post makes it sound like the water pump is driven by the belt directly, which we all know(or should) that's not the case. Please be accurate when posting, there are people reading this forum that may not know better.

 

Summit Racing carries at least one 'inline' (hose-mounted) electric water pump that you could adapt to the engine.

 

Operationally it doesn't matter whether it's mounted to the SC and spun via that pulley or mounted to a separate pulley and spun with that, it's a pump, driven by the engine, and a pulley. As the RPM's go higher, it spins faster.

Even with a stock SC pulley spinning the pump up to 8300 RPM's isn't likely to make it last for long. The only variable in this case is whether or not the given belt driven accessory can continue to run normally when spun up past 8k rpm's. There's no misinformation being spread, you're simply being picky about the way it's displayed.

For those that are unaware, or haven't figured it out by reading this thread, the Waterpump is bolted to the SC, and spun off the same pulley as the SC. There, now that we've established that, can we please get the thread back on track?

 

HUH I think you mean to say the Water Pump is botled to the SC.

 

. The Gen 5 SC has another SC bolted to the back of it .

And I think you meant to say bolted .

Thanks...

 

Hi there can someone tell me how to install a electric water pump 80 into my mini cooper s 2004 R53 please.

 

I had one - an aluminum bodied EWP made by Davies Craig. Followed all of the recommendations on placement and orientations, burping air out of the system. It ran for less than 2,000 miles before failing. Glad I was at home when it failed because who knows what could have happened if I had been on a spirited drive and didn't notice the temp gauge pegged. NOT WORTH it, IMO and IME. Others have had good luck, but Russian roulette is not my cup of tea with a car that I plan to keep forever. YMMV.

 

When I was talking to Jan at RMW, (when he seemed to still talk to people), about building a 8000+ RPM NA motor and got to the point of asking about the water pump, he said that he normally just moved the water pump to the R50's location for the supercharged cars that he built as it was a better location and had no issues or problems.