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24th March 2018, 04:28 | #41 |
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The thermostats I have come across have failed in the welding around the middle. Some fail from virtually new.
The pipes usually fail along the seams, and a few have been so rotten that they crumble. That some failures occur around the O-ring, is obviously also the case, but to suggest this is the case every time you see coolant in the V is ..... not what I have found.
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22nd October 2020, 16:30 | #42 |
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A bit of a thread resurrection here!
Whilst answering another coolant query in the technical section (1.8 this time) I stumbled across this: https://rimmerbros.com/Item--i-CDU3858OS I don't know if it's been spotted or mentioned before, or if anybody has tried them, but it's another potential solution to the persistent o-ring failures seen on the KV6. It depends just how oversized it is I suppose, but I feel this could be a solution for my problems and thought I'd share it just in case it helps anybody else. |
22nd October 2020, 17:25 | #43 |
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Rimmer have always listed this Part Number with the normal one for the KV6 thermostat assembly, but the details say it's For stainless steel pipes.
That suggests it refers to a different application, so somewhat confusing. What problems do you have? TC |
22nd October 2020, 21:21 | #44 | |
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I experimented with oversized 'O' rings but all I succeeded in doing was breaking the thermostat housing when trying to locate it into place. Having exhausted all the possibilities I could think of I took up the suggestion of another club member. He asked if movement could be responsible and sure enough, I could easily rock the whole assembly by grasping the large thermostat hose. It was then that I discovered the purpose of the mysterious plastic clips on the straight pipe. Moving these fully outwards stopped the movement and, with new 'O' rings I've had no leakage since. Simon
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23rd October 2020, 11:46 | #45 | |
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23rd October 2020, 11:55 | #46 | |
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My problem appears to be a slight leak from the base of the banana pipe, where I suspect a scored bore in the block is the main reason. It's slight enough that 3 years later I'm still living with it quite happily. It only leaks in winter, and has improved significantly since I replace my header tank. |
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23rd October 2020, 13:39 | #47 | |||
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TC |
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23rd October 2020, 14:27 | #48 | |
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Simon
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