Hi there,

It seems to be impossible to find resonable priced water pumps for the v12. Either you pay €580 for a Chinese copy (yes, they are now copying the water pumps...) or you can't get any what so ever. All common stockists (SNG, DMG, XKS untld., ...) have a backorder on (new) pumps.

I've seen that there are some refurbs for sale (exchange against a old one) but I'm not soooooo keen on a refurb, as you don't know what condition it actually is in (for example my return pipe - top one into pipe from bypass - is badly corroded and would never seal with a rubber hose again) nor how it was done - I assume the housing is sandblasted to clean it up, bearing is whacked out, rubber seal then forced out etc.

Does anyone here though have experience with overhauled pumps and can recommend a refurber? Or a contact to a pump supplier for a good price?

 

i rebuilt my V12 pump 22years ago still fine no leaks or looseness.

i went to a local bearing supply store,Daytona FL., with bearing he matched it up no problem, it was all standard US sizes, shaft and outer race!

for a seal i did go to a Jaguar dealer in Orlando FL. and bought a seal recommended by the parts technicion, he said better than original!
examining it , was just much better product!

my being in the engine rebuilding business for 50 years, i usually make my own decsion
for parts , i probably rebuilt maybe 50/60 cooling pumps in that time period!

i also built some custom pumps ,to increase volume and pressure between inlets and outlets.

i'm from a completely different generations, back when you did everything in your ability to do it yourself, called an American Hot Rodder!

after much thought we did things, "because we didnt know we couldnt"

i'm retired and sold my engine business,so no proper shop with tools, to do a build on a cooling pump.

 

Thanks for your answer RB but I can't rebuild mine due to bad corrosion, otherwise I would...

 

Are you saying that yours is so bad that it can't be rebuilt, period? Or that it's bad enough that it'll need professional rebuilding rather than a DIY effort?

Cheers
DD

 

You'd never get the top entry pipe sealed again... Too any scars and material missing. Someone could of course try but I doubt it would work... At least in my opinion...





The rear seems all fine, just the front area is badly scared and pitted... Or would you think the would still be refurbishable?

 

Oh heavens, that's what JB Weld is for !

I've fixed more than a few badly eroded aluminum thermostat housings, intake manifolds, and the like that way. Fill up the low spots, let it dry a couple days, sand until smooth. Works fine.

In the 80s GM sold an epoxy specifically for this type of repair....but the details escape me at the moment. It was red....maybe someone here will remember.


For some odd reason I can enlarge only your first picture. The other two won't expand so I can't see much detail

Cheers
DD

 

If you will find bearing and seal, I can send you aluminum body good condition with impeller and pulley. Not expensive to Deutschland

 

JB Weld sounds interesting... Might get some as I have more corrosion on the thermostat lids...

 

I might come back on you, mate. Thanks for your offer.

I might actually have a problem less at the moment

 

Look

 

I received an email from SNG, my pump arrived. So no need to overhaul mine, though I won't throw it away... I might still do the JB Weld and overhaul thimg

 

See this YouTube video on how to repair corroded fittings. It's on Mercedes, but same issue.

 

Jaguar XJS 5.3 V12 RH thermostat cover Part no. EBC10203 | eBay

I have left for you.

 

The You Tube guy's day time job is surgery....
Very precise work.


I've encountered similar issues in the past.


1. Noisy water pump replacement for the 302 SBF in my 85 Ford 4x4.
Thin mating surface in alloy. I built it up with RTV. Worked just fine.


2. Crisis resolved in my LT1. Mezzirre electric water pump the "work around. Needed to seat a freeze plug in the old housing. A bit raggedy. Alloy, son says can fix that with TIG. Nope, some weird material. TIG ate it. Old housing now junk, and not even good junk.


Fixed by getting a rebuild and stripping it.


3. Somewhere in past decades, I needed to build up an alloy sealing surface. I found a pre J-B product. Alloy particles in a "glue". Done,


Daim:


Where you needing, now you have two or is it three !!!




Nippy out. Degrees not bad, but a very chilling breeze/wind. But, I chopped and busted a lot of the felled tree trunks and branches. Fire wood, walking sticks, and recycle fodder abound.


I earned a nice beer and lunch, coming up!!



Carl