[QUOTE=ghostrunner;16838939]
Well, It appear the most common issue seems to be a stage 3 or 4 kit brings it out.. I think that someone might have mentioned that a 107 did have the issue but there may have been something else wrong there.

https://www.hdforums.com/forum/milwa...-oil-pump.html

https://www.hdforums.com/forum/milwa...ddressing.html

 

[QUOTE=Max Headflow;16839010]If the stage 3 or 4 kit brings it out then i should be in that category cuz my bike was the first that my dealer put together. The kit they used was the first kit they got when the new bikes came out. Since then they have built somewhere around 20 of them. Oddly the only one they had the sumping issue with was a stock bike.

 

I have been told by several dealerships they have had the factory 107, 114 and now 2018 117 engines all sump. So it appears that they will do it in stock OEM trim. Now add the SE Stage III or IV and they appear to do it even more. The Stage cylinders are a bigger factor in these applications as I have yet to see a Stage III or IV cylinder that was round. They have a combination of things wrong and I pointed out what I have seen wrong within the engine. There are simple fixes they should do at the manufacturing level and I would be willing to bet the sumpping issues would be gone. Trying to make a better pump to cover up the other defects is just a poor choice IMHO as sooner or later it's going to bite you in the a$$.

In racing we run as many as 5 suction stages based on where we need oil removed from, so 2 stages is no big deal and it was being done long before Dan added it and long before I started working on engines back in 1965. I believe the roots for the dry sump go all the way back to the 1930's in aircraft, possible before that.

 

My bike was bought same time and stage 3 also. I have had a little bit of trans fluid transfer. Have not noticed real sumping either. But what is this oil sensor problem? I missed this one?

On a side note, my crank position sensor was leaking oil and I replaced the o-ring. That didn't help. Had to put a little RTV to make it stop leaking.

 

With a user name like "Yamaharley" I'm sure you're just the kind of person he was alluding to, making up commie stories about Harleys with sumping and transfer problems. I would bet that you're even colluding with the Russians on this misinformation campaign. FALSE NEWS! You might even be an undercover Indian and Victory lover!

 

Oil light was coming on and into center would say check oil. Replaced sensor twice before problem quit. Supposedly was told had a batch of bad ones

 

Thanks for the info. I guess I got to pass up this one.

I know it shouldn't be happening at all, but I'd rather have some trans migration than the sumping. I've always used Primary plus in both trans and primary so don't have to worry about mixing but it has been minimal. At least it won't fry my engine like sumping.

 

Isn’t it nice when the trolls don’t come around and we get good info? I’m wondering if it’s not happening that much and we’re all just hyper aware of it happening because we don’t want anything to happen to our 25,000 dollar motor cycles. I have 4500 miles on mine, no issues at all....I didn’t do the “baby it for 500 miles” break In though, I had a 400 mile ride home so I did 85mph all night.

 

This theory of many contributing factors keeping in balance makes the most sense to me and IMO explains why the issue isn't resolved with one update or revision. Reminds me of a PC360 Komatsu I used to have, one part of the equation fell out of balance and the whole re-gen system would start to snowball into a huge mess. Dealer ended up buying that one back from us.

My question is although it wouldn't alleviate the design flaws, would this motor benefit from a dual scavenge pump like the Thayer or the TC3

 

Yeah I've seen that. I call it "millennial think". The basis for all poilitical correctness.