Sumping Sorted - Harley Davidson Forums

Milwaukee Eight (M8) 2017 and up M8 Air and Liquid Cooled discussion

Sumping Sorted

  #1  
Old 09-27-2018, 06:10 AM
Peter Quinn
Peter Quinn is offline
Senior Rider
Thread Starter
Join Date: Sep 2012
Location: Allover
Posts: 410
Thanked 85 Times in 61 Posts
Smile Sumping Sorted

I am very surprised at the lack of excitement or interest on the news of a Harley Davidson developed sumping seal solution.
As some of our technical Gurus have cleverly surmised it works by closing in the compression which escapes through the
bearing and crancase housing.Evidently this increased pressure assists to keep the pump primed during sustained high RPM runs.
No I was not one of those astute Geniuses! I was told of the developement by a Master Tech Instructor that I was with at Sturgis.
Time will tell but at least we can have a Beer and a Cheer?
 
The Following 3 Users Say Thank You to Peter Quinn For This Useful Post:
Buck05 (10-04-2018), johnnynitro (09-27-2018), Xcrossbow (09-28-2018)
  #2  
Old 09-27-2018, 06:16 AM
Tonebender's Avatar
Tonebender
Tonebender is offline
Club Member
Join Date: Apr 2018
Location: Florida
Posts: 591
Thanked 344 Times in 168 Posts
Default

Since I am patiently waiting for this issue to be ironed out before I purchase an M8, my question would be, is this fix/modification on all 2019 models?
 
  #3  
Old 09-27-2018, 06:27 AM
ekb55
ekb55 is offline
One Of The Regulars
Join Date: Jul 2017
Location: Maryland
Posts: 149
Thanked 40 Times in 25 Posts
Default Not surprised

Originally Posted by Peter Quinn View Post
I am very surprised at the lack of excitement or interest on the news of a Harley Davidson developed sumping seal solution.
As some of our technical Gurus have cleverly surmised it works by closing in the compression which escapes through the
bearing and crancase housing.Evidently this increased pressure assists to keep the pump primed during sustained high RPM runs.
No I was not one of those astute Geniuses! I was told of the developement by a Master Tech Instructor that I was with at Sturgis.
Time will tell but at least we can have a Beer and a Cheer?
I for one am not surprised. It is much easier to complain than to compliment. Stand-by for the "I'll believe it when I see it", "I don't think that will solve it", on and on and on. But do NOT wait for a positive comment or a thank you MOCO.

Just my 2c worth.
 

Last edited by ekb55; 09-27-2018 at 06:31 AM.
The Following 2 Users Say Thank You to ekb55 For This Useful Post:
Peter Quinn (09-27-2018), stan60 (10-02-2018)
  #4  
Old 09-27-2018, 07:14 AM
msnyder
msnyder is offline
New Member
Join Date: Apr 2013
Location: Asheville, NC
Posts: 32
Thanks: 0
Thanked 9 Times in 3 Posts
Default

Originally Posted by Peter Quinn View Post
I am very surprised at the lack of excitement or interest on the news of a Harley Davidson developed sumping seal solution.
As some of our technical Gurus have cleverly surmised it works by closing in the compression which escapes through the
bearing and crancase housing.Evidently this increased pressure assists to keep the pump primed during sustained high RPM runs.
No I was not one of those astute Geniuses! I was told of the developement by a Master Tech Instructor that I was with at Sturgis.
Time will tell but at least we can have a Beer and a Cheer?
There are already videos out of 2019 m8 sumping...actually I think they are both CVO,s. About $45,000.00 a piece. One made it 185 miles. I have been thinking about a 2019 RGU with the 114" but that was when I was thinking "they have probably cleaned up there act with the new ones". LOL I have a 2017 RGU which neither sumps
(so far) or transfrs fluid (so far). But I,m not sure I will roll the dice on another one. Spending that much money and HOPING that I get a good one again?
NO not today anyway..
 
  #5  
Old 09-27-2018, 07:57 AM
jamala00
jamala00 is online now
Road Warrior
Join Date: Sep 2009
Location: Neenah, WI
Posts: 1,385
Thanked 157 Times in 126 Posts
  #6  
Old 09-27-2018, 08:19 AM
msnyder
msnyder is offline
New Member
Join Date: Apr 2013
Location: Asheville, NC
Posts: 32
Thanks: 0
Thanked 9 Times in 3 Posts
Default

Originally Posted by jamala00 View Post
I have read it. And I also would like to know if the 2019 bikes that are sumping have the pump plate with the seal. But like the engine builders and other knowedgeable posters have said. Pump revisions are an attempt to band aid other more serious flaws and shortcomings. Poor scavenge port placement in the cases, cylinders out of round (causing excessive leakdown and blowby), and other things that I can,t even remember. George Bryce posted his beliefs some time back. He and Steve Cole have built some serious M8,s with the original design pumps with No sumping problems. There builds work because of there attention to detail and good engine building practices. Not the F---- it ship it MoCo way. Max
 
The Following User Says Thank You to msnyder For This Useful Post:
Wmitz (09-30-2018)
  #7  
Old 09-28-2018, 03:19 PM
jpooch00
jpooch00 is offline
Elite HDF Member
Join Date: Jun 2007
Location: People's Republic of Boulder Colorado
Posts: 4,773
Thanked 228 Times in 195 Posts
Default

Originally Posted by Peter Quinn View Post
I am very surprised at the lack of excitement or interest on the news of a Harley Davidson developed sumping seal solution.
As some of our technical Gurus have cleverly surmised it works by closing in the compression which escapes through the
bearing and crancase housing.Evidently this increased pressure assists to keep the pump primed during sustained high RPM runs.
No I was not one of those astute Geniuses! I was told of the developement by a Master Tech Instructor that I was with at Sturgis.
Time will tell but at least we can have a Beer and a Cheer?
Just waiting to see if it actually works? That would be my guess.

Isn't this something like the 8th. or so "fix" for sumping that they've come up with so far?

Doesn't seem like they're having much luck with their multiple attempts at bandaid fixes for the M8 issues.
 
  #8  
Old 09-28-2018, 06:03 PM
GTK's Avatar
GTK
GTK is offline
Ultimate HDF Member
Join Date: Feb 2006
Location: South Florida
Posts: 6,317
Thanked 371 Times in 300 Posts
Default

Originally Posted by ekb55 View Post
I for one am not surprised. It is much easier to complain than to compliment. Stand-by for the "I'll believe it when I see it", "I don't think that will solve it", on and on and on. But do NOT wait for a positive comment or a thank you MOCO.

Just my 2c worth.
Really have to agree with your response. What really irks me are the replies from the key board commandos who do not even own a M8 and hate every thing Moco does.
 
The Following User Says Thank You to GTK For This Useful Post:
Peter Quinn (09-29-2018)
  #9  
Old 09-28-2018, 06:26 PM
badcooky's Avatar
badcooky
badcooky is offline
Outstanding HDF Member
Join Date: Jan 2012
Location: Location location.
Posts: 3,021
Thanked 441 Times in 345 Posts
Default

Originally Posted by GTK View Post
Really have to agree with your response. What really irks me are the replies from the key board commandos who do not even own a M8 and hate every thing Moco does.
The 19 that sumped was put together without a seal apparently, that's why it sumped.But the 19's sump is all we'll hear about that.
Yea you guys are right though the M8 threads are run by guys with out them and are upset when we ride them and have so much fun on such awesome bikes , without sumping they are nothing,where will they go I almost feel sorry for the stinking fuking maggots .
So many fake sumpings too It's a sad state of affairs , petty envy from jealous punks. .
 

Last edited by badcooky; 09-28-2018 at 06:27 PM.
  #10  
Old 09-28-2018, 07:30 PM
Steve Cole
Steve Cole is offline
Product Expert
Join Date: Jan 2008
Posts: 1,964
Thanked 1,335 Times in 594 Posts
Default

Originally Posted by badcooky View Post
The 19 that sumped was put together without a seal apparently, that's why it sumped.But the 19's sump is all we'll hear about that.
Yea you guys are right though the M8 threads are run by guys with out them and are upset when we ride them and have so much fun on such awesome bikes , without sumping they are nothing,where will they go I almost feel sorry for the stinking fuking maggots .
So many fake sumpings too It's a sad state of affairs , petty envy from jealous punks. .
We deal with dealerships from around the world daily, all the time. To date we have had 3 - 4 2019 bikes that have been brought back to dealerships for sumping 1 was a CVO the others I do not know. I also do not know the details on any of them at this time. I am waiting to see what they end up finding and if they call back and tell me. That said, you can make of it what you like but IMHO it doesn't sound like it's fixed.
 

Thread Tools
Search this Thread
Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: