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20th February 2024, 23:09
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#1 |
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Avid contributor
Rover 75 Saloon Join Date: Nov 2018
Location: Sydney
Posts: 179
Thanks: 82
Thanked 41 Times in 21 Posts
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Leaking thermostat replacement
I've had this car for nearly 5 years, I think the thermostat must have been leaking for at least 10 though. In some of the more recessed areas, the dried coolant was 1.5cm deep.
  http://john116.com.au/thermo1.jpeg http://john116.com.au/thermo2.jpeg Lots of cleaning to do. J Last edited by john116; 20th February 2024 at 23:17.. Reason: add links |
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21st February 2024, 08:10
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#2 |
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I really should get out more.......
Rover 75 Saloon Join Date: Jul 2011
Location: Gävle
Posts: 2,552
Thanks: 395
Thanked 823 Times in 652 Posts
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Interesting photos. Not only has the thermostat failed but the gasket has leaked for some time too, which is one reason I avoid the keyhole method.
It’s not supposed to be necessary but I always add a smear of blue Hylomar to the gasket especially around those water channels. A very good opportunity to clean the gauze filters and unblock the smaller breather pinholes if you haven’t already done them. Good luck |
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21st February 2024, 11:50
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#3 |
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Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,808
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
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That coolant mix looks very strong!
Sent from my SM-G780G using Tapatalk
__________________
Lest we forget..
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21st February 2024, 12:17
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#4 |
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Posted a thing or two
rover 75 club se Join Date: Apr 2011
Location: Leicester
Posts: 1,741
Thanks: 358
Thanked 419 Times in 310 Posts
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Dont be tempted Andy ... stick to newcastle brown !!!
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2nd March 2024, 20:43
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#5 |
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Avid contributor
Rover 75 Saloon Join Date: Nov 2018
Location: Sydney
Posts: 179
Thanks: 82
Thanked 41 Times in 21 Posts
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Back together
Thermostat and clamps replaced, all coolant hoses replaced and all back together.
  http://john116.com.au/engine1.JPG http://john116.com.au/engine2.JPG Not looking too bad for just over 70,000kms. |
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4th March 2024, 13:42
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#6 |
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Discount MG Rover Spares
Rover 75 CDTi, 2x MG ZS180 Join Date: Jun 2011
Location: Hythe, Southampton
Posts: 11,354
Thanks: 456
Thanked 3,377 Times in 2,027 Posts
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Smashing, top work!
The KV6 thermostat design is definitely in my 'top 5' for things I wish I could change about these cars...!
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5th March 2024, 05:19
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#7 |
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Avid contributor
Rover 75 Saloon Join Date: Nov 2018
Location: Sydney
Posts: 179
Thanks: 82
Thanked 41 Times in 21 Posts
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Yes, agree :-) !
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5th March 2024, 08:22
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#8 | ||
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Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
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Thanks: 1,587
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Quote:
Quote:
 The problem though, once I'd identified it from another member's suggestion, is that no-one knew what on earth those channels and clips were for on the straight pipe. MG Rover gave no explanation in the technical description with only an inadequate, unspecific hint in the repair manual. Now that we know, leakage can be prevented. Simon 
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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Linear Mode
