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23rd October 2020, 08:22 | #1 |
This is my second home
MG ZT and Rover 75, Join Date: Jul 2013
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V6 Inlet Manifold Opened.
I have some rattling V6 Inlet manifolds lying around and curiosity got the better of me. I opened one up to try to understand the problems a little better, what a can of worms we face in the future. The picture one shows the butterflies in the open position, picture two shows the operating rod in position and that's where all our problems come from, the axles that the butterflies are on are hard plastic in a hard plastic carrier, the pictures three and four show the kind of wear I've described, not all of them seem to wear but the ones nearest the vis motor do wear a lot. The carriers are sonic welded on to the manifold rather like a crown being placed. I'd say it's very possible to remove them and swap bad ones for good ones, they wear out the axle and carriers and go very baggy, it seems that this then puts a strain on the operating shaft and, the areas where it clips on to the butterflies elongates and then simply falls off, this results in the butterfly just flapping around. The last picture shows an elongated hole and the shaft is nothing but scrap, it's made from hard plastic and wears badly. I reckon the only way to get round this problem is a new type of shaft and find a way to bush the axle holes for the butterflies, if we can't solve this then all manifolds will end up scrap at some point, I do think regular oil changes will help but not enough in the long term.
Last edited by Saga Lout; 23rd October 2020 at 08:24.. |
23rd October 2020, 08:42 | #2 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
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23rd October 2020, 09:11 | #3 |
Gets stuck in
Rover 75 Saloon Join Date: Jan 2010
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It looks like the operating shaft does not have a proper support to take its weight so the butterfly spindles and ball joints are supporting the weight of the operating shaft.
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23rd October 2020, 10:14 | #4 |
Newbie
Rover 75 Saloon Join Date: Oct 2016
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What about regularly adding an upper cylinder lubricant to the fuel? Expensive over time, but was recommended to me by a Land Rover service center.
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23rd October 2020, 11:25 | #5 | |
Gets stuck in
MG ZT 260, Rover 75 Connie SE auto Join Date: Feb 2013
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Quote:
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23rd October 2020, 13:45 | #6 |
Loves to post
Volvo S80 Join Date: Feb 2010
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A chap on another forum , I can't remember his name, but the forum was X Power actually didsome research and was going to do repair kits with metal replacements , he had a couple of mock ups and a finished item that he was trialing but I don't know what happe ed as he stopped posting and I haven't been on the forum for a year or so, might be worth checking out again
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23rd October 2020, 14:12 | #7 |
Loves to post
Volvo S80 Join Date: Feb 2010
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Just checked on the Xpower forum and the chaps user name was Sheddist the article was back in 2010, but its worth a look as it has some pictures and is a clever design, he was going to sell them but suddenly stopped posting, the article is under Reparing inlet manifold KV6 article, try this link
repairing inlet manifold kv6 https://forums.xpowerforums.com/showthread.php?t=54886 Last edited by Gazmo65; 23rd October 2020 at 14:13.. Reason: speeling |
23rd October 2020, 15:52 | #8 | |
This is my second home
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But...
Quote:
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23rd October 2020, 17:44 | #9 |
Loves to post
Rover 75 Tourer Join Date: Sep 2011
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I recall seeing notice of a complete replacement for the existing mechanism in development, piggy-backing off the VIZ-controlled system somehow and on this site I think. That was a few years back and not seen or heard anything since.
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24th October 2020, 11:48 | #10 | ||
Give to Learn
Freelander 2 Join Date: Aug 2010
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Quote:
Hi Michael. I opened one back in 2014 after changing it due to the death rattle photos below of what i found inside. 1 2 3 4 5 6 You can see how the sockets to the ball have broken, where do these broken bits go? into the engine i presume. 7 You can see below how they go brittle and break off. 8 9 10 11 12 here you can see how the oil gums up the flaps, i have just removed mine from my FL2 which is easy compared to the 190 V6 manifolds. 13
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