Water Leak

Ian Anderson · Post by **Ian Anderson** » Tue Jun 17, 2008 8:46 pm

Took the Gt40 for a drive and came back after a few miles of smiles

Decided to let it get to full temp and get the fans cycled to check as in 4 weeks I'm of to Le Mans and it will be hot there!

Well it all went well and fans cycled.

Pushed car into garage as I cannot get out - car too wide with roof on the door or garage too narrow - Mrs says I cannot extend!

Turned around and there was a small mark where the car had been siting - enough to figure it was water and not oil.

today I went out and tightened all the jubilee clips around the cooling system and then ran it to temp again and got the fans to cycle.

got under the car and it was dripping - once every 5 - 8 secs.

Felt around and thaught I had the leak but even tightening still resulted in the small water drops.

Removed the inspection hatch behind the seats to check around the water pump and feeling behind the water pump pulley got some damp areas - not a lot but then the drip was npt big.

So now what do you think - new water pump - replace seals (if that is possible) or try a barrs leaks (if it;s still available)

Just option 1 is going to be a pig working inside the cockpit and through a hatch - something along the lines of keyhole surgery!

And if option 1 new pump is the way are the all the same to fit a 1990 3.9 lump?

Cheers
ian

ChrisJC · Post by **ChrisJC** » Wed Jun 18, 2008 7:13 am

I don't believe you can service the water pump, so it sounds like a new one might be in order.

I've also tried Barrs leak & the like a few times in wild fits of optimism!, and they've never helped!

Chris.

Ian Anderson · Post by **Ian Anderson** » Wed Jun 18, 2008 9:17 am

Thanks Chris - it's about what I thaught - why sell a 50p seal when you can sell a £60 pump?

So are all pumps on 3.9 EFi Hotwire engines the same?

Anyone have a part number? Or point me to one on E pay or somewhere

Barrs will have to work this afternoon as I need to drop it at a repairers to ver ventilation system fixed

Ian

Post by **katanaman** » Wed Jun 18, 2008 9:19 am

New pump, stop leak wont work on that for very long and the bearings will be on their way out now as well.

ChrisJC · Post by **ChrisJC** » Wed Jun 18, 2008 11:22 am

Rimmer Bros only list one pump (for the 3.9) , so I guess they are all the same:
http://www.rimmerbros.co.uk/rimmer/rove ... ne/cooling

Chris.

julian.jay · Post by **julian.jay** » Wed Jun 18, 2008 12:12 pm

P6 water pump available on ebay for around £50.00 plus post. Just search P6 Rover water pump. This is new Q H stock. I have just bought one. Julian

Post by **katanaman** » Wed Jun 18, 2008 12:41 pm

julian.jay wrote:P6 water pump available on ebay for around £50.00 plus post. Just search P6 Rover water pump. This is new Q H stock. I have just bought one. Julian

P6 pump wont fit a proper 3.9 efi engine

RoverP6B · Post by **RoverP6B** » Fri Jun 20, 2008 12:13 pm

The footprint of the P6B waterpump is different to that of a waterpump for a 3.9 timing case.

The P6B and SD1 share the same waterpump footprint, although the pump configuration is different.

Ron.

Ian Anderson · Post by **Ian Anderson** » Fri Jun 20, 2008 12:45 pm

Thanks for that

Now my engine has a nember form a sequence sold to Morgan.

It was made in 1990 and is hotwire EFi
It runs V belt (not flat / serpentine belt)

Does anyone know if the Morgan / TVR / Landrover / Range Rover pumps for hotwire are the same units?

I'd love to order one up and not have to strip it then order and wait!

Thanks
Ian

Post by **katanaman** » Fri Jun 20, 2008 1:00 pm

I think a pic might solve this Ian if possible. A quick google and it looks like it could even have a 2wd style pump but it really isn't very clear.

davemgb · Post by **davemgb** » Fri Jun 20, 2008 8:48 pm

Water pump fits to the front cover so that is the important item to match the pump to - presumably you have a 1990 or earlier cover rather than one of the later versions with the concentre oil pump.

If the pump is like the one on Katanaman's sig then I think it is a P6 or SD1 version - both have the same pump to timing cover gasket but the pulley style is different, SD1 puts the drive belt far forward compared to the P6.

Range rover style front covers place the pump higher above the crank centre line.

Dave

CastleMGBV8 · Post by **CastleMGBV8** » Fri Jun 20, 2008 11:42 pm

Ian,

Before you start taking it to pieces have you checked all the the hoses including the small one that comes off the back of the water pump and feeds the heater, easily missed and could explain water around the water pump.

If not and you have to change the pump you may find you have the SD1 front cover and P6 pump combination to keep the front of the engine as short as possible.

Picture

Ian Anderson · Post by **Ian Anderson** » Tue Jun 24, 2008 9:24 pm

Well I'm baffled further

I took my car for some work to a bloke in Newbury and drove it back - both ways at 50 - 65 mph (about 2500 rpm in 5th)

Before I went I thought netter safe than sorry and put in a rad weld (100 ml tub - that was supposed to do about 2/3 of the volume of water in my system.

checked the water this evening and it has not used any

But I never had it up to fan cycle temp on the trip as the traffic was actually flowing - it was wet on the way back too (the old Goodrich tyres are slippery as a bar of soap)

So any ideas? Do I try to get it up to full temp and see if it leaks?
Or just say bugger it and start stripping it?

Problem is Le Mans in 2 weeks is likely to be really hot 35 plus weather!

Ian

bodger · Post by **bodger** » Tue Jun 24, 2008 10:35 pm

these are very cheap for water pumps ..

http://search.stores.ebay.co.uk/ISLAND- ... 02QQsofpZ0

and fast delivery too

i NEVER use that radweld rubbish , it'll end up blocking up you rad tubes and then you may have even more cooling problems .if it was me i would flush that crap out as soon as poss , if it leaking find it and fix it .
don't risk it really over heating
why they sell that crap is beyond me , you might as well stick an egg in it

Post by **katanaman** » Tue Jun 24, 2008 10:43 pm

I agree with bodger, you might have stopped it for now but it wont last. Your pump is a moving object, not a fixed hole in a rad. You wont have helped any cooling problems either with putting that stuff in.