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29th August 2020, 19:35 | #11 |
Coolguy
Rover 75 CDT Tourer Auto, Rover 75 2.0 Connoisseur Auto, MG ZT 2.5 Auto and MG ZT Cdti Auto (Monogra Join Date: Nov 2009
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I'm glad I'm not the only one that is getting more and more frustrated with poor quality replacements. Many are basically expensive landfill. It's really not on. The trouble is most of us don't return items so there is no 'incentive' for manufacturers/suppliers to supply decent quality items anymore. Quick sale, quick buck. [/QUOTE]
This problem is rife throughout most makes I am afraid. Even Jaguar parts supplied by specialists who only deal in Jaguars are of poor quality or don't even fit. Believe me, I know from experience. |
29th August 2020, 19:38 | #12 |
Gets stuck in
ROVER 75 SALOON Join Date: Apr 2017
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Use the genuine landrover one. That will be genuine.i bought three before i took the plunge.no problems since
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29th August 2020, 19:55 | #13 | |||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Quote:
Quote:
Like everyone else, I have had leaks in the 'V' and have diligently carried out experiments and I now have a better understanding of what's happening. FIrst of all, the straight pipe. Mine is the original, now 21 years old and it's never given trouble. There is no need to replace this. If your Rimmer item split then I'd say that you are correct to conclude that it was defective. The Kaiser metal parts are successful due to their rigidity. I have discovered that the purpose of the serrated 'herbie' clips on the straight pipe is to provide the same rigidity for the plastic assembly. Unfortunately these are often not positioned properly after service. The result is that the assembly moves and the thermostat 'O' ring flattens and begins to leak. The Chinese modified the thermostat housing by adding three supporting legs. These help with rigidity so if you can locate this improved housing, buy one without delay! Quote:
I hope that this is of interest. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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30th August 2020, 15:20 | #14 |
This is my second home
MG ZT-T 190 Monogram Typhoon Join Date: Jan 2009
Location: Oxfordshire
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I can't be 100% certain. The only way I could I guess would be to swap over the thermostats.
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1st September 2020, 22:39 | #15 |
I really should get out more.......
A Reasonably Priced Car Join Date: Jan 2014
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I totally sympathise with anybody gifted with the task of replacing a KV6 thermostat.Simply put "What a rubbish design and material" The designer of this must have either been on serious drugs, or tasked with creating one of the most stupid designs gifted to an engine.
I have been gifted with 2 to do so far, and happily they went ok-ish. The first went to plan and drove away happily with no issues. The second one needed an bit more fettling, both kits were procured from X-Part dealer in Sandy, and were mostly up to a good standard. Be warned there is a lack of washer for the temperature sensor, so worth considering sourcing a new one as a seperate entity. The second one had a very small leak from the block port side, this had been cleaned to a polished state prior to fitting, this may have been a contribution to the coolant leak out and contraction of air during cooling down, in turn causing pressure in the cooling system making temperatures vary considerably. The cure was to remove the whole lot again, and re-fit using limited amounts of ptfe tape and a very small trace of sealanton to the seals. This fortunately worked very well with no ill effects whatsoever. The cooling system behaved perfectly from then on, and with all 190 engines that are fit and healthy- put a smile on my face every time it went out. I also agree that there seems to be a huge array of really poor quality parts on the market now, and tempting to save the wallet from suicide, but simply dont do it as it is likely to bite you back ! |
2nd September 2020, 09:21 | #16 | |
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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Quote:
I believe that the choice of plastic was to minimise weight (in common with the inlet manifold chamber) which isn't unusual. I'm becoming increasingly convinced that the design is fine so long as the "herbie" clips on the straight pipe are positioned correctly. The criticism I have is that neither RAVE nor Haynes stresses the importance of this. As Christopher has pointed out, the factory assembly typically lasts thirteen years which reinforces this theory. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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2nd September 2020, 17:13 | #17 |
Banned
ROVER 75 Connoisseur Join Date: Jul 2020
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My straight pipe has the clips positioned at the outer ends, and has been that way since the premature failure of the straight pipe that came as part of the original kit.
In line with advice gleaned from reading here, the the O rings were lubricated with Molycote 55 and the ratchet clips secured against the block housing and thermostat ends of the straight pipe respectively. I'm not convinced that the leak isn't originating where the two halves of the thermostat housing are welded together upon cooling down, but there are definite signs of pinkish residue within the vee. It's not a job I enjoy undertaking, however it is extremely disheartening that despite your best efforts, the leaks persist. |
2nd September 2020, 19:40 | #18 | ||
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
Location: Former Middlesex
Posts: 20,263
Thanks: 1,587
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Quote:
I've just been reviewing your earlier post to try to understand your situation. You said that 18 months ago you fitted an "upgraded" straight pipe supplied from Rimmer's which split. It was replaced under warranty with an identical part and that you now have antifreeze residue in the 'V'. I'm interpreting "upgraded" as meaning a redesigned, aftermarket part which has now proven unreliable on two occasions. In contrast, my original 21 years old straight pipe lives on. Hmmm, interesting isn't it. I can't help thinking that the problem lies with the aftermarket part rather than due to any other factor. Quote:
If you can get hold of a genuine MG Rover straight pipe, try fitting that in place of your Rimmer Bros. "upgraded" item. Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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2nd September 2020, 20:32 | #19 | |
Banned
ROVER 75 Connoisseur Join Date: Jul 2020
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Quote:
Hi Simon, the pipe I was supplied with to replace the failed one in the kit was a PEP101970. The original kit was a PEM101050K, which I believed to be a genuine item rather than an aftermarket one, which included a temperature sender which I had been advised was a contributing factor in a cold starting issue the car had been suffering with. When comparing the plastic parts at the time, the ones which I had removed had a smooth texture to the curved pipe, the straight and the housing. The replacement parts had a slight texture to the finish on the pipework, but not the housing itself. |
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