Leaking heater....

Hi all. Having just removing all the carpets from my V8 due to the ever popular sunroof drain tube problem, I discovered that part of the heater unit has been leaking coolant into the car. I have attached some pics that show where the problem is. I'm looking for advice on the best way to fix this before I call in the pros.

This picture shows the part which is leaking, it is on the upper left hand side of the drivers footwell and appears to have two pipes going into it. I've also attached the Rimmer Bros diagram of the V8 heater system. I have to say, my heater system doesn't look anything like the one in their diagram. It has been suggested by that part number 8, is the part on my heater which is leaking, but again, my part doesn't look anything like that


https://www.two-sixties.co.uk/mgoc26...tid=8830&stc=1https://www.two-sixties.co.uk/mgoc26...tid=8831&stc=1

Hi Chris, welcome along. Your leak is probably coming from the distribution valve which directs coolant to the dual zone climate control. It is the same valve that is in the N/S plenum under the scuttle panel and is a well known problem. The one in the plenum is replaceable with an upgraded valve from the club shop but I don't think it will fit as a replacement for the one attached to the heater matrix. Some members have replaced this with a simple three way 15mm copper T piece with short 15mm copper pipe stubs with olives soldered. This resolves the problem but you will no longer have dual zone CC. I'll see if I can find any more info.

Nich.

By the way if you get your completed questionnaire back to Tim to get full membership there is a lot of info you do not have access to at the moment.

Nich.

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Originally Posted by Nich

Hi Chris, welcome along. Your leak is probably coming from the distribution valve which directs coolant to the dual zone climate control. It is the same valve that is in the N/S plenum under the scuttle panel and is a well known problem. The one in the plenum is replaceable with an upgraded valve from the club shop but I don't think it will fit as a replacement for the one attached to the heater matrix. Some members have replaced this with a simple three way 15mm copper T piece with short 15mm copper pipe stubs with olives soldered. This resolves the problem but you will no longer have dual zone CC. I'll see if I can find any more info.

Nich.

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Thanks for the help. I'm a little confused: is it possible to replace my leaky valve with this homemade copper t-piece, or is that just for the external valve? Are there any 'how to's' for removing and refitting, and for fabricating a replacement? Is it not longer possible to get the correct part? Like I say, the one that Rimmer Bros stock looks nothing like what I have, the pipes appear to go into the bottom of mine, rather than the sides.

Thirdly...what questionnaire? I'm keen to get involved. I've just bought this car and it's paperwork would suggest a connection to The Phoenix Group and John Towers in particular. I just need to await some info from the DVLA

Many thanks again

Send a PM to Tim for a copy of the questionnaire. What are the last three digits of your VIN? We may have some more info on your car.

The homemade replacement T piece which will negate your dual zone climate control is for the internal valve attached to the heater matrix but it is obviously important for you to ensure that this is the offending article before either replacing or buying one from Rimmers especially if you are not convinced that you have the same valve. Rimmers schematics do not always reflect an accurate depiction of the parts in question.

I would have thought your best bet would be to get a work light down there and take as many photos as you can in a logical sequence which should allow you to build up a notional picture of the valve in question.

By the way the part numbers on the Rimmers site would suggest the internal valve is different from the one in the plenum but again Rimmers are not always accurate and it would probably be wise to seek advice from someone who has done the replacement.

Nich.

Hi. If you have a ZT-260 you do indeed have the two way valve which COULD be replaced by a Y-piece. I think they are available from X-part though. If you have a R75V8 you can't do it that easily. It's a two motor 4 way jobby and handed, LHD/RHD, to boot. They are available from X-Part, I just bought one, since the motors on mine have a mind of their own and jam on the plastic tracks which activate the two valves.

David

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Originally Posted by David

Hi. If you have a ZT-260 you do indeed have the two way valve which COULD be replaced by a Y-piece. I think they are available from X-part though. If you have a R75V8 you can't do it that easily. It's a two motor 4 way jobby and handed, LHD/RHD, to boot. They are available from X-Part, I just bought one, since the motors on mine have a mind of their own and jam on the plastic tracks which activate the two valves.

David

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Thanks. Can you if possible post a picture of the part you've just bought, or the part number? Also, how did you get yours out? I have the Rover V8, so it seems the homemade replacement isn't on the cards!

Thanks

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Originally Posted by RattyB

Thanks. Can you if possible post a picture of the part you've just bought, or the part number? Also, how did you get yours out? I have the Rover V8, so it seems the homemade replacement isn't on the cards!

Thanks

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Part number is JGE000070 and I think the RHD version ends 000060. Try putting that into Rimmer's part-number box. Breath in; they are now 250 Quid!
www.allcarpartsfast.co.uk have 'em at £159.93 + VAT though , which is what I paid Nick at Austin's for my 00070

Googling just on "JGE000060" will bring up quite a lot of options, but I couldn't find one cheaper. Nick may have one ??

Best check that JGE000060 is correct for RHD; I know my JGE000070 is the correct valve for LHD.

Edit: haven't fitted mine yet. Nick say's its a dash out job :-(
Maybe just the console unit is enough, but I'm not banking on that. LHD is different anyway, some bits being handed, some not.

David

Quote:

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Originally Posted by RattyB

Thanks. Can you if possible post a picture of the part you've just bought, or the part number? Also, how did you get yours out? I have the Rover V8, so it seems the homemade replacement isn't on the cards!

Thanks

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Pictures JGE000070 (LHD R75V8)

https://www.two-sixties.co.uk/mgoc26...tid=8832&stc=1https://www.two-sixties.co.uk/mgoc26...tid=8833&stc=1https://www.two-sixties.co.uk/mgoc26...tid=8834&stc=1

Quote:

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Originally Posted by David

Part number is JGE000070 and I think the RHD version ends 000060. Try putting that into Rimmer's part-number box. Breath in; they are now 250 Quid!
www.allcarpartsfast.co.uk have 'em at £159.93 + VAT though , which is what I paid Nick at Austin's for my 00070

Googling just on "JGE000060" will bring up quite a lot of options, but I couldn't find one cheaper. Nick may have one ??

Best check that JGE000060 is correct for RHD; I know my JGE000070 is the correct valve for LHD.

Edit: haven't fitted mine yet. Nick say's its a dash out job :-(
Maybe just the console unit is enough, but I'm not banking on that. LHD is different anyway, some bits being handed, some not.

David

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So it's not JGE000010 as the Rimmer diagram suggests? Edit, thanks for the pics. So far I've found this forum very helpful

Quote:

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Originally Posted by RattyB

So it's not JGE000010 as the Rimmer diagram suggests?

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Not sure which bit of your car is leaking, but the distribution valve is part number 9 on this Rimmer page (no schematic there !!).
http://www.rimmerbros.co.uk/Item--i-GRID004238

David

The picture you sent is the part that I believe is causing my leak, so JGE000060 would be correct.

I think JGE000010 may be the ZT 260 version ????? or maybe the bit we all replace with the Black-Olive ???
but, if so, don't know why it costs so much. Anybody else got info on that?

David

Good responses David, I didn't think to ask whether it was an MG or a Rover, would have saved a lot of time if this had been stated at the outset.

Nich.

JGE000010 is the part number for the valve next to the heater.

JGE000020 is the part number for the valve in the plenum.

Nich.

Got the blighter out, and as you can see, didn't need to remove the dash! You can also see clearly where the leak is! This is what Sundays are made for!

https://www.two-sixties.co.uk/mgoc26...tid=8835&stc=1https://www.two-sixties.co.uk/mgoc26...tid=8836&stc=1https://www.two-sixties.co.uk/mgoc26...tid=8837&stc=1

Quote:

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Originally Posted by Nich

Good responses David, I didn't think to ask whether it was an MG or a Rover, would have saved a lot of time if this had been stated at the outset.

Nich.

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In all fairness, you wouldn't think there would be a difference, let alone LHD/RHD versions. Guess it has something to do with the little knurled wheel on my nice woody dash, where ZT guys have the V8 badge on your painty jobs??

David

Quote:

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Originally Posted by RattyB

Got the blighter out, and as you can see, didn't need to remove the dash! You can also see clearly where the leak is! ...

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Congrats !!!!!!
... Fancy a long weekend in S.Holland to do mine? (You could bring a heated screen with you too). ;)

David

Ha ha...I sense a business venture in the offing. Thanks for all the help chaps. I'll update you with how the refit goes.

Quote:

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Originally Posted by RattyB

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WELCOME to the Two Sixties http://thumbsnap.com/s/hYchpI4Y.jpg

When you're green there is loads to read.

(Lists of your brothers and sisters and Tech info)

List of 001 to 883
Pictures of cars in VIN order
To add your car

Car Names

Estates

Supercharged Cars

Locations
Location Map

Rolling Road Results

Past & Future Events
List of events 2017
List of events 2016

Articles about our cars
Technical Index

Consumables - What goes where

The SHOP

MG ZT260 FAQ (in the Public Section)
260s/R75V8 Facebook

MG ZT/ZT-T and Rover 75 V8 Buyers Guide (in the Public Section)

Items for sale 260 members only
MGZT260/R75V8Wheels for sale
Items For Sale in Public Section (in the Public Section)
List of MG ZT/ZTT/75 V8s For Sale (in the Public Section)

Plus loads more on the forum..............

Quote:

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Originally Posted by AndyG

WELCOME to the Two Sixties http://thumbsnap.com/s/hYchpI4Y.jpg

When you're green there is loads to read.

(Lists of your brothers and sisters and Tech info)

List of 001 to 883
Pictures of cars in VIN order
To add your car

Car Names

Estates

Supercharged Cars

Locations
Location Map

Rolling Road Results

Past & Future Events
List of events 2017
List of events 2016

Articles about our cars
Technical Index

Consumables - What goes where

The SHOP

MG ZT260 FAQ (in the Public Section)
260s/R75V8 Facebook

MG ZT/ZT-T and Rover 75 V8 Buyers Guide (in the Public Section)

Items for sale 260 members only
MGZT260/R75V8Wheels for sale
Items For Sale in Public Section (in the Public Section)
List of MG ZT/ZTT/75 V8s For Sale (in the Public Section)

Plus loads more on the forum..............

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Thanks for all that, however I don't have sufficient member privileges to access parts of it. How do I rectify that?

PM Tim for a questionnaire, fill it in and send it back to get full access...........as I said before.

Nich.