Water pump
Author
Discussion

EXKAY120

Original Poster:

540 posts

146 months

Thursday 29th August 2019
quotequote all
Hello there to all you guys in the know....
Can anyone recommend a good water pump rebuild specialist ? its for my 120
I had one rebuilt (or so they said) it was done by one of the well known classic Jaguar parts suppliers in the North of England, cost £100 for the job, anyway i've used the car probably half a dozen times since and the car is still overheating, i've had everything else checked out to try and eliminate the problem, new radiator, new hoses, thermostat ect ect and still no good, so i can only assume its the water pump still causing the problem.
I'm down in Kent so someone nearby would be good, or any advice out there someone could give ?
Thanks in advance guys

droopsnoot

14,622 posts

271 months

Thursday 29th August 2019
quotequote all
I have no Jaguar experience, but I had two water pumps for my car rebuilt at a company called "EP Services", they advertise in Classic Motor Monthly and have been around for quite a few years. I'm only into the first few hundred miles of running the car it's on, but it's been fine so far.

Allan L

799 posts

134 months

Thursday 29th August 2019
quotequote all
Since the only failure in a simple centrifugal waterpump that results in overheating is a corroded/eroded impellor, have you looked at the pump yourself and is it all there and sound-looking?

crankedup

25,764 posts

272 months

Thursday 29th August 2019
quotequote all
Are you certain that the problem is not partially blocked waterways in the engine?

Peter3442

450 posts

97 months

Thursday 29th August 2019
quotequote all
Are you sure that you have the correct type of thermostat? The XK thermostat operates to divert the flow between the water jacket and a by-pass. It's easy to fit a thermostat that doesn't. If you want good help, contact Ken Jenkins near Worksop or David Marks near Nottingham. You might also like to join the Jaguar Enthusiasts Club.

Peter3442

450 posts

97 months

Thursday 29th August 2019
quotequote all
... sorry, saw North of England and overlooked your mention of Kent. However, if you are a member of JEC, Ken or David will still be happy to give advice.

EXKAY120

Original Poster:

540 posts

146 months

Thursday 29th August 2019
quotequote all
Many thanks for your advice/help guys, the pump is quite new (rebuilt by David Manners) so i would'nt have thought its the pump, but i guess i need to take it off and have a good look at it, also the thermostat situation.....
Whats the best product to use for flushing the waterways ?

anonymous-user

83 months

Thursday 29th August 2019
quotequote all
If your waterways are clogged enough to be the source of overheating (and from what you describe then this is indeed a very strong possibility) then no proprietary "pour in" product will make the slightest difference. The best bet under such circumstances is to strip the engine and acid dip the block/head.

paintman

7,860 posts

219 months

Friday 30th August 2019
quotequote all
Is the car actually overheating or do you have a defective temperature sender?

EXKAY120

Original Poster:

540 posts

146 months

Friday 30th August 2019
quotequote all
Its throwing the water out of the overflow pipe.....

I stripped it down this morning, took the radiator off but left the pump in place, as i said earlier the pump was replaced last year (David Manners)
I'm now thinking after inspecting the rad closely that that could be the problem, it seems very 'clogged up" with rust, i flushed it through but it does look pretty grotty,.
Think i'll get it either recored or buy a new one, so next question, new alluminium one or have the old one rebuilt ? also, who's best to buy an ali one from ? regards price and workmanship ..... maybe wait till i go to the revival in a couple of weeks, there's bound to be a few radiator specialists there selling ?

Boosted LS1

21,200 posts

289 months

Friday 30th August 2019
quotequote all
Have you overfilled the coolant? There needs to be air space in the expansion tank.

EXKAY120

Original Poster:

540 posts

146 months

Friday 30th August 2019
quotequote all
No, not overfilled

EXKAY120

Original Poster:

540 posts

146 months

Friday 30th August 2019
quotequote all
So where's the best place for an ali rad for 120 guys ?