Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion
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Melted intake manifold

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Old Sep 24, 2018 | 05:02 PM
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Default Melted intake manifold

Had plastic intake manifold replaced in March.They said it melted.Everything was fine till today.I tried to go for a ride and it ran fine on fast idle,but, died when it came off fast idle.Started again, same thing.Taking in tomorrow and I bet it melted again.
 
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Old Sep 24, 2018 | 05:28 PM
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Curious, which part are we talking about here? http://partsfinder.onlinemicrofiche....20ULTRA%20(KGL)
 
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Old Sep 24, 2018 | 05:42 PM
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Please don’t tell me they’re using plastic for the manifold.
 
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Old Sep 24, 2018 | 05:51 PM
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Originally Posted by IronAss
Please don’t tell me they’re using plastic for the manifold.
Yes, they are a composite plastic, just like most cars.
 
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Old Sep 24, 2018 | 05:57 PM
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Brilliant cost cutting. On an air cooled engine no less.

Ask the dumbasses if they are willing to install the HPI aluminum manifold in its place. It won't melt.

At the same time, I recommend looking into whether the bike is overheating due to sumping, which could easily raise temps to the point the manifold melts,
 

Last edited by VDeuce; Sep 24, 2018 at 05:59 PM.
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Old Sep 24, 2018 | 06:02 PM
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Originally Posted by strych9
Yes, they are a composite plastic, just like most cars.
What’s next, roofs, just like most cars?
 

Last edited by IronAss; Sep 24, 2018 at 06:05 PM.
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Old Sep 24, 2018 | 06:06 PM
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And note that the 64mm SE manifold for the M8 is also aluminum; think they might have known something?
 
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Old Sep 24, 2018 | 06:11 PM
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Old Sep 24, 2018 | 06:34 PM
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Originally Posted by IronAss

What’s next, roofs, just like most cars?
too late, done!


 
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Old Sep 24, 2018 | 06:46 PM
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Before we all panic, consider all the reports of sumping and associated heat with burnt oil smell. It's odd that no one else has reported that the intake manifold had melted.
 
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