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M8 Sumping - Warning signs to listen for?

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  #11  
Old 05-25-2018, 06:26 PM
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Originally Posted by giacomo56
I have been watching these threads on the M8 and what i see in common with sumping is that the folks that it is happening to like to ride way up on the RPM...4500+.
the only time I am at the above 4000rpm is when changing gears.....then i settle in between 2800/3500 rpm....
am I the only guy that is seeing this correlation?
No,you're not the only one. I would not any motor at a higher than needed rpm. However, a motor shouldn't suffer a melt down at 80% of redline either.
 
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  #12  
Old 05-25-2018, 06:32 PM
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When the engine overheats and shuts down and smells of burnt oil...sumpins wrong!!
 
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  #13  
Old 05-25-2018, 06:33 PM
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Originally Posted by tbob
Do you know if your bike has the latest oil pump.Production after October.
Just spoke with the tech and he said that there was nothing that I could have done differently to prevent this from happening. This is a huge problem with the 117's and he's already seen his fair share of 117 failures and it doesn't seem to matter how aggressive or how passive these bikes are being ridden, he said if the motor is going to sump it's going to sump and that's it!
 
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  #14  
Old 05-25-2018, 06:41 PM
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Originally Posted by Mark Moore
Just spoke with the tech and he said that there was nothing that I could have done differently to prevent this from happening. This is a huge problem with the 117's and he's already seen his fair share of 117 failures and it doesn't seem to matter how aggressive or how passive these bikes are being ridden, he said if the motor is going to sump it's going to sump and that's it!
Get the last three numbers off the pump. I never said RPMs cause sumping. It's a case design and oil pump issue.High RPMs do create more heat and that's where the problem starts.
 
Last edited by tbob; 05-25-2018 at 06:43 PM.
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  #15  
Old 05-25-2018, 06:47 PM
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Originally Posted by tbob
Get the last three numbers off the pump. I never said RPMs cause sumping. It's a case design and oil pump issue.High RPMs do create more heat and that's where the problem starts.
The tech said I had the latest oil pump design but I'll definitely get the numbers.
 
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  #16  
Old 05-25-2018, 11:27 PM
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Originally Posted by bad tappets
No,you're not the only one. I would not any motor at a higher than needed rpm. However, a motor shouldn't suffer a melt down at 80% of redline either.
Agreed...
Absolutely ridiculous and basically foolhardy to run a Harley at that rpm. But.... There is no reason that it should FAIL because of it. Owner abuse really needs to be factored in to engine design. For realz.
 
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  #17  
Old 05-25-2018, 11:43 PM
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If I'm a fool for running my $50,000 top of the line Harley Davidson at 4500 RPM then I guess I'm a fool! I am definarely a fool for spending so much money on a new Harley thinking it was built to ride hard. Maybe I'll trade this boat anchor in for a Honda.
 
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  #18  
Old 05-26-2018, 12:04 AM
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Originally Posted by Mark Moore
If I'm a fool for running my $50,000 top of the line Harley Davidson at 4500 RPM then I guess I'm a fool! I am definarely a fool for spending so much money on a new Harley thinking it was built to ride hard. Maybe I'll trade this boat anchor in for a Honda.
Sorry my man. But YES...
If you don't think that level of abuse is....
that's not only foolish, it's ridiculous. But hey, it's YOUR bike. Do whatever you like to it. But please understand....
never mind.......
 
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Old 05-26-2018, 03:14 AM
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Originally Posted by bikerlaw
Sorry my man. But YES...
If you don't think that level of abuse is....
that's not only foolish, it's ridiculous. But hey, it's YOUR bike. Do whatever you like to it. But please understand....
never mind.......
It's karma for irritating everyone else in earshot of OP's 900 watt stereo. Downright rude behavior IMO.
 
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  #20  
Old 05-26-2018, 04:46 AM
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With your 900 watt stereo blasting you wouldn't be able to hear any engine noise.
 
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