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5th May 2016, 22:31 | #21 |
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I did clean the mating faces carefully, but tightened all bolts gradually. I'll try the inner to outer this time. Thanks Simon. Will keep this updated, with good news hopefully.
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6th May 2016, 08:01 | #22 |
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I'm hoping to source a replacement O ring for the thermostat housing today.
Having encountered problems before with the clutch master cylinder o rings, I have been trying to find an answer as to which material to use. The second paragraph under "avoid machine damage", states OAT will react with PVC, rubber, and Viton. http://www.miller-bradford.com/serv_tips_oat.html Last edited by Typhoon190; 6th May 2016 at 08:07.. |
6th May 2016, 08:03 | #23 |
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Please let us know how you get on. Inlet manifold gasket trouble is not very common on the KV6 so fingers crossed.
Simon
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6th May 2016, 08:07 | #24 |
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Viton (for O-rings) is a good choice. About 4 times the price of butyl. Butyl is resistant to normal engine chemicals, but seems to suffer from age related cracks.
Viton does not. And, I would ditch the OAT in favour of conventional good quality anti freeze. As for the gasket material, look at Valemoid and Klingerite.
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6th May 2016, 08:08 | #25 |
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Link added above.
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6th May 2016, 08:08 | #26 | ||
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Quote:
The MGR 'O' rings are available separately. Quote:
There are many V6s around with OAT and no 'O' ring trouble which suggests that the antifreeze isn't the reason. The MGR 'O' rings are made from none of those materials anyway. Simon
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11th July 2016, 21:40 | #27 |
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Just an update on this, and a thank you for all the advice.
Coolant level is stable, and has been since the replacement inlet manifold gaskets were fitted, using the method that Simon advised. I'm surprised that it appears to be the tightening sequence that may have caused me so many problems. Simon's diagnosis on the thermostat o rings was also correct. I think perhaps a quad ring would be the way forward, but haven't been able to source the correct size and material as yet. Thanks again to all. Ben. |
30th January 2017, 21:10 | #28 |
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Losing coolant into the engine again.
Not happy. Really wish there was a better option for replacement gaskets. There is not enough of a seal between the coolant ways and the cylinder ports. If I had to choose, I'd prefer the coolant leaked out rather than into the engine. |
31st January 2017, 05:11 | #29 |
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Bad design, bad materials.
I did the following. Took silver paint, like you use for normal gates. Gave the gaskets two or three coats, let it dry for a day, bolted together. No problems. This is an old trick used when you had to re-use gaskets, and it has worked for many, including me. So, just give the incompetent designers at Rover and BMW a helping hand, they need it!
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31st January 2017, 20:47 | #30 |
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What makes you so sure that it's into the engine?
Simon
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