M8 problems
Grand HDF Member
Joined: Mar 2011
Posts: 4,816
Likes: 1,320
From: Good roads, cold beer
can you clarify the " transmission migration issue"? These are the type of things I'm trying to learn about the M8 but I don't see a simple list of these kind of items anywhere on the forum. Thanks.
Tourer
Joined: Aug 2017
Posts: 285
Likes: 64
From: idaho
>Each has it's own, separate, oil reservoir.
...so they are connected mechanically, but separated lubrication wise via seals on the shafts.
These seals fail, oil seeks the lowest level, so your engine and/or transmission drain into your primary.
That's why you should routinely check your fluids.
Tourer
Joined: Jul 2017
Posts: 259
Likes: 85
From: Tennessee
I tend to think that if this was just a "failing seal issue" a fix would have been in by now unless you a privy to something we all may have missed. I believe you meant to say that "IF" a seal or a gasket fails. That would be the case in any motorcycle.
>The engine, primary and transmission are all mechanically connected to each other.
>Each has it's own, separate, oil reservoir.
...so they are connected mechanically, but separated lubrication wise via seals on the shafts.
These seals fail, oil seeks the lowest level, so your engine and/or transmission drain into your primary.
That's why you should routinely check your fluids.
>Each has it's own, separate, oil reservoir.
...so they are connected mechanically, but separated lubrication wise via seals on the shafts.
These seals fail, oil seeks the lowest level, so your engine and/or transmission drain into your primary.
That's why you should routinely check your fluids.
Tourer
Joined: Jul 2017
Posts: 259
Likes: 85
From: Tennessee
I would say that the engine is "strongest link" in the new line. M8 issues seem to be with the oil pump which has been addressed. The engine itself is a beast. The issue with the transmission fluid transfer is from 2014 to present, not an exclusive M8 issue. This issue will be worked out. Have fun on the M8, ride!
Do M8s have the same compensator issues like earlier HDs? (am assuming it has an upgraded comp, but still....)
Are they still using the hydraulic cam tensioner setup? or has it gone to gears?
Thought I read somewhere you need to pull the gastank to put in new sparkplugs, that true?
Heard HD went to cheap wheel bearings....that still an issue w/ the newer models?
What are cons to the M8? (big issues everyone knows about)
Just wondering what the big 'fix' will be with that engine in the future. Seems every HD engine has that weakest link (I own TCs currently).
Thanks.
Are they still using the hydraulic cam tensioner setup? or has it gone to gears?
Thought I read somewhere you need to pull the gastank to put in new sparkplugs, that true?
Heard HD went to cheap wheel bearings....that still an issue w/ the newer models?
What are cons to the M8? (big issues everyone knows about)
Just wondering what the big 'fix' will be with that engine in the future. Seems every HD engine has that weakest link (I own TCs currently).
Thanks.
Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
Never heard of any oil migration issues before other than with the m8’s
I own a 2014 twinky that I typically run very bery hard. Tranny never looses a drop.
Crank case oil gets dark quick, but hey. I run it hard.
35k mi and all she wants to do is dance
I own a 2014 twinky that I typically run very bery hard. Tranny never looses a drop.
Crank case oil gets dark quick, but hey. I run it hard.
35k mi and all she wants to do is dance
Tourer
Joined: Aug 2017
Posts: 285
Likes: 64
From: idaho
I wonder how many of the seal failures are caused by the owner...car transmission fluid in the primary?....wow...that stuff eats paint...oil doesn't eat paint...can those seals and case gaskets withstand tranny fluid?
Road Master
Joined: Oct 2009
Posts: 861
Likes: 136
From: Wisconsin
I don't know 2HP and 3 foot pounds of torque. I don't know if you could even tell the difference.
Jonnierock
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Grand HDF Member
Joined: Nov 2013
Posts: 3,807
Likes: 1,488
From: SW Washington State
Look at the torque lines, see that gap between them and stop looking at the peak numbers.
Seasoned HDF Member
Joined: Apr 2015
Posts: 6,863
Likes: 3,727
From: St. Charles, MO
I've ridden a '16 and a '17 back-to-back. Similarly equipped, the difference is noticeable. Not earth shattering, but definitely noticeable, especially in lower RPM's.