I've been keeping my eye's on here to see if any 2018's have a sumping issue. To my knowledge they have not introduced any stages for 2018. I'm curious if MoCo has gotten ahead of this? Anyone know of a design change, except for oil pump change?

 

Good question. I have an 18 114 Softail with no issues. But there are differences in the engine cases and oiling system in the Softails. Don't know if that helps or not. Before I bought mine I had the parts person look up the oil pump part number and it had the latest oil pump. Reportedly there has been another pump since then. It will be interesting to see if the Softails have the issue. So far I have not heard of it. But that doesn't mean much. The part I find most interesting, and that makes no sense, is people who report sumping after a few thousand miles. You would think it would occur from day one.

 

The biggest issue with sumping was going stage 4. A few stock bike had an issue but mostly it was the upgraded engines that experienced the problem.

Still waiting to hear if any upgraded softails are having the issue... still pretty new.

 

2018 114 & 117 are 10:1 compression, vs a stage 4 which is 11:1, this seems to be where the difference is coming from.

 

If I remember some of my research the 2017 114ci is 10.5 compression (jumps to 11.1 on stage 4, I believe) there is a new part # for the 2018 114ci and has lower compression 10.1.. part number may have no relevance being it could be the color of the engine.. Thanks for the response, I really want to know if the splash paddles, or anything has changed?? Is there to much pressure in the crank area, that the pump is unable to gather the oil quick enough? I'm hoping someone has looked inside. ? And another thought there has been some that have went w after market builds, are they having sumping issues? I ask because I hear/read little about new performance #'s and durability.

 

Australian 2018 Softail models the 107 has 10 to 1 and the 114 has 10.5 to 1 .
Not picking a blue here just saying.
My dealer has had no 17 or 18 Ozzy baggers sump or migrate oil , they did get the R1450 paper that they showed me and no 2018 Ozzy Softails that they or I know of have sumped or migrated oil.I know a heap of guys here too that have bought M8's that's why I bought one.
HTH.

 

Mine sumped bad enough that they are putting a new engine and stage 4 in at replacement. I was wondering if I should have them hold off on the stage 4.. Break in is no fun, if this engine sumps as well w the stage 4, I didn't have the issue before the stage 4. This is my delema. The engine are built at time of order and stamped w the oem vin#, as I'm told. It will come as a 114ci and they will intall the 117ci stage 4 before it leaves the shop. I'm very pleased but yet leary.

 

My 2017 107 with the stage III installed at time of purchase sumped and failed after 15k miles. Warranty says No new engine, only cam/lifters and pump. I traded it off for a 2018 and if I ever go into this engine it will be with the aftermarket.

 

I'm picking up my stock 107 from the shop on Thursday after they've replaced the engine under warranty for the sumping issue.

So it's not in any way limited to stage 3 or 4 bikes.

 

I'd venture to say that 99% of all stock 107's don't have a sumping issue. It's the SE stage builds that have it, especially the stage 4.