MINI2

bowman1812 · Jun 20th, 2007, 08:10 PM

Noticed the other day that water had been leaking from the expansion tank. Got my mate to look into the tank whilist I revved the car and bubbles were coming out. He suggested that it was most likely the head gasket that had gone. Took the car straight away to my local dealership to get it checked out. Their anaylsis was that the supercharger unit was broken and needed replacing (Not sure exactly how its broken. Its done 41000 miles on a 52 plate.). My mate who used to be a mechanic was unsure as to how this caused bubbles in the expansion tank. I tried searching the net to find out but can't find the answer. Our guess is that the water cooling system also runs through the supercharger. Is this correct? Or can someone point me in the direction of a website that could explain it to me.

Thanks Adam

Cooper Man · Jun 20th, 2007, 08:25 PM

Hi Bowman,

I can't comment on the bubbles, but I do know that my own MCS is for ever pumping water out of the expansion tank too!
There are times (not very often though) when I can hear a gurgling from behind the dash which is when I assume it is letting the water out; I've never been able to get out and confirm because it generally happened when I was stuck in traffic on the M25!

Ant FR · Jun 21st, 2007, 11:16 AM

yes the Supercharger does run the water pump, so may be related. Seems strange as you very rarely hear of a supercharger packing up. from what you say it sounds more likr head gasket. Is there any mayo round the oil cap etc.

Also if in the farout chance it is the Supercharger. Buy one off ebay as loads on there and most are delivery milage and about 150 quid. BMW will charge you nearer 1000 pounds to supply one.

bowman1812 · Jun 21st, 2007, 06:16 PM

Managed to get the supercharger on a gesture of goodwill from BMW so I only had to pay for labour. If I was to purchase the supercharger from BMW it would be £800. (In the unlikely event of another I will look on ebay, cheers)
An interesting point from the Service guy was that they have never had a Mini in with a blown head gasket.
Recieved the car back today. Drove it about 30 miles back, seems slightly different in the way the power comes. That could just be me though. Maybe a need to run it in a bit.

MiniPetrolHead · Jun 21st, 2007, 11:21 PM

If it seems different to the way the power comes in, they may have put the face lift version of the supercharger which has the teflon coated blades!

Alex

Jun 20th, 2007, 08:10 PM	#1
bowman1812 MINI2 Newbie Join Date: Feb 2007 Local Time: 09:50 AM Posts: 15 Offline	Supercharger Broken Noticed the other day that water had been leaking from the expansion tank. Got my mate to look into the tank whilist I revved the car and bubbles were coming out. He suggested that it was most likely the head gasket that had gone. Took the car straight away to my local dealership to get it checked out. Their anaylsis was that the supercharger unit was broken and needed replacing (Not sure exactly how its broken. Its done 41000 miles on a 52 plate.). My mate who used to be a mechanic was unsure as to how this caused bubbles in the expansion tank. I tried searching the net to find out but can't find the answer. Our guess is that the water cooling system also runs through the supercharger. Is this correct? Or can someone point me in the direction of a website that could explain it to me. Thanks Adam

Jun 20th, 2007, 08:25 PM	#2 (permalink)
Cooper Man "Just Like That!" Join Date: Oct 2003 Location: England Local Time: 09:50 AM Posts: 254 Offline	Hi Bowman, I can't comment on the bubbles, but I do know that my own MCS is for ever pumping water out of the expansion tank too! There are times (not very often though) when I can hear a gurgling from behind the dash which is when I assume it is letting the water out; I've never been able to get out and confirm because it generally happened when I was stuck in traffic on the M25! UJ Club: GB064

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Rate This Thread
Rate This Thread:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
broken pipe clip on supercharger reduces power - warranty?	GNDMini	MINI Cooper S	4	Oct 16th, 2006 09:18 PM
Way to tell if a broken clutch V broken gearbox from symptons alone? (Or best guess).	Paul	Faults & Fixes	22	Aug 19th, 2006 07:57 AM
Supercharger broken???	Peachiz	Faults & Fixes	4	Nov 25th, 2004 02:18 PM
MCS Supercharger vs Works Supercharger	LMB	John Cooper Works & GP	60	Jul 15th, 2003 07:41 PM

MINI2

Fuel for your MINI obsession

Discussions concerning the Cooper S

Today
Sponsors	Sponsored Links Registered members do not see Google Ads posts, they can also post messages, pictures, and classified adverts. Register your free account today and become a member of MINI2 - MINI Forum

Jun 21st, 2007, 11:16 AM	#3 (permalink)
Ant FR MINI2 Master My Classifieds Join Date: Oct 2006 Local Time: 09:50 AM Posts: 1,917 Offline	yes the Supercharger does run the water pump, so may be related. Seems strange as you very rarely hear of a supercharger packing up. from what you say it sounds more likr head gasket. Is there any mayo round the oil cap etc. Also if in the farout chance it is the Supercharger. Buy one off ebay as loads on there and most are delivery milage and about 150 quid. BMW will charge you nearer 1000 pounds to supply one.

Jun 21st, 2007, 06:16 PM	#4 (permalink)
bowman1812 MINI2 Newbie Join Date: Feb 2007 Local Time: 09:50 AM Posts: 15 Offline	Managed to get the supercharger on a gesture of goodwill from BMW so I only had to pay for labour. If I was to purchase the supercharger from BMW it would be £800. (In the unlikely event of another I will look on ebay, cheers) An interesting point from the Service guy was that they have never had a Mini in with a blown head gasket. Recieved the car back today. Drove it about 30 miles back, seems slightly different in the way the power comes. That could just be me though. Maybe a need to run it in a bit.

Jun 21st, 2007, 11:21 PM	#5 (permalink)
MiniPetrolHead 263bhp / 284.55Nm Torque My Classifieds Join Date: Oct 2006 Location: Eastbourne E.Sussex Local Time: 09:50 AM Posts: 693 Offline	If it seems different to the way the power comes in, they may have put the face lift version of the supercharger which has the teflon coated blades! Alex

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)