No complaints here, but I voided my warranty early on

 

My 2020 CVO Road Glide has 136,000 miles and has been flawless. That's with 7000-8000 mile motor oil changes.

​Anything can go wrong at any time, but my twin cam was a nightmare compared to my M8.

 

On 5 speed there wasn't any venting through the starter.. Don't know where you got that but if there was, there'd be a leak..

You are correct about the hydraulic clutch being a part of the issue on M8.. There have been some 6 speed CVO TCs that had this issue.. HD changed the trapdoor bearing on M8s VS TCs.. To help. Also IMO the first gear rattle fix helped to force oil through the trapdoor bearing to cause the issue..

BTW
2017 RK 53000 miles, stage 2. Did replaced lifters with Hylifts at 2K. It needed the primary vent at 40K.. Had the front heat shield crack.. HD updated the shield. No breather mods and no oil dripping from the AC. Bike runs like a top.. Was broke in correctly. 41-45 mpg.. Still has the original oil pump.

I do have a bud that bought a 2017 FLTR used that ended up having a blown base gasket.

 

There was probably a small amount throughtthe jack shaft. I am not the one who came up with the idea. Not saying there was a lot. But how much was passing through the shaft for the clutch, granted the tranny has vent.

I wonder why they managed to get by without a vent on primary all these years? Are we saying it was the hydraullic clutches fault?

I heard heard some claims it has been going on for a bit. Maybe as motors got bigger and emmssions got stricter, and engines got hotter. I do not know.

 

jackshaft - if you are discussing the starter jackshaft, there is no way it can pass oil into the starter. If it leaks, it will leak out the coupling between the primary and starter. I think that the original poster may have been dealing with a TC 6 speed. It does not apply to 5 speed TCs. IMO looking at his issues, he had a plugged tranny vent.

Primary originally vented through the main shaft where the clutch pushrod goes. You really need to look at he differences between the layout of a cable versus hydraulic clutch to see what is going on..

As you run motor leaner, you generate more heat simply due to the fact that lean mixtures burn slower.

 

[QUOTE=Max Headflow;21377312]jackshaft - if you are discussing the starter jackshaft, there is no way it can pass oil into the starter. If it leaks, it will leak out the coupling between the primary and starter. I think that the original poster may have been dealing with a TC 6 speed. It does not apply to 5 speed TCs. IMO looking at his issues, he had a plugged tranny vent.

Primary originally vented through the main shaft where the clutch pushrod goes. You really need to look at he differences between the layout of a cable versus hydraulic clutch to see what is going on..

As you run motor leaner, you generate more heat simply due to the fact that lean mixtures burn slower.[/QUOTE
]
Wasn't some blame of the transfer problem, placed on the fact they Harley went to a narrow primary for the touring bikes as well?

 

Venting, not oil movement. Not a lot, but some. through the jackshaft. Enough to help, I don't know. But what has changed? Why do you need the vent now? Bigger hotter engines. It doesn't do to everybody. Other theory I heard is it happens more in touring bikes cause they tend to get rode more, and longer distances. Nothing else, that is why you probably tend to seem more issues in touring bikes.

I have not had a need to work on my hydraullic clutched bike. Hopefully I don't get experience for awhile.

 

Never thought of that. You limited lows, and then I believe all touring bikes, and not sure about the rest went to a small primary in 2016, I have been told. I did notice less oil in the 2016 primary. Though my first guess was they figured it would gain it from tranny, and over 5k, wouldn't be a problem. Though the manual does have longer service intervals, and some follow it.

 

The first time I've read this.. I suspect not. There were some TCs that had the issue but, IIRC, they were all hydraulic clutches.

 

If there is venting, there will be oil leakage. BTW on early TC, I've messed up the seal on the end of the jackshaft and it causes a leak behind the primary.