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Bike was pick up this morning. How will dealer know in addition to replacing the bad pre 10/10/17 oil pump, if my 2018 Stage 4 engine also needs replaced? I’m reading some had engines replaced and others just the pumps?
Bike was pick up this morning. How will dealer know in addition to replacing the bad pre 10/10/17 oil pump, if my 2018 Stage 4 engine also needs replaced? Im reading some had engines replaced and others just the pumps?
SB1459 provides instructions on how to determine if the engine needs to be replaced.
I'd blame engineering on this one.. and I'm a retired engineer..
Answering to a board that only cares about profit and cutting costsdoesn't hep either. Maybe a higher salary budget to hire engineers that graduated a little higher in their class would help as well.
The fact that they used the same MPN for the last revision of the pump means all they probably did was attempt to tighten up scavenge gerotor clearances. If that's the case the new pump will only work for a while. Maybe enough to get the bike out of warranty..
I suspect that Fueling is finding out that their pump don't fix the issue..
They need to wither come out with a dual scavenge gerotor pump or figure out how to fix the pickup on the crankcase scavenge passage.
The fact that they used the same MPN for the last revision of the pump means all they probably did was attempt to tighten up scavenge gerotor clearances. If that's the case the new pump will only work for a while. Maybe enough to get the bike out of warranty..
I suspect that Fueling is finding out that their pump don't fix the issue..
They need to wither come out with a dual scavenge gerotor pump or figure out how to fix the pickup on the crankcase scavenge passage.
I do believe you're right about this. The M8, like the S&S has a big hole at the pickup also. There is also something else. If you look at the sump on the M8 it is taller at the back as is the one on the TwinCam, but the pickup hole one the M8 is at the top of that tall area instead of being on the bottom like the TC's. So the M8's is bigger, higher, and shorter than the TC's which can lead to sumping. I think this can be exacerbated by blow by or the piston jets becoming loose.
I'm sure that every young (or old) engineer wants to do their own thing, but it would have been much better if they would have copied the sump and the piston oiler jets from the TwinCam. It will be interesting to see if someone at the MOCO gets a clue and they finally do a case redesign or a pump with the dual return gerotors.
Then what really matters is if the engine was built before or after 10/10/2017, not when it was upgraded to stage 4 or even when it was installed. Given the slack in HD sales, there may very well be an excess inventory of M8 engines built from throughout 2017, so making sure that any engine installed was built AFTER 10/10/17 or is inspected and updated with the latest oil pump would be of critical importance on any Stage III/IV upgrade.
In fact in the "Extra Information" on page 4 of the latest SB1450 it states "When installing a Screamin Eagle Stage III or Stage IV kit on a 2017 or 2018 Milwaukee 8 equipped motorcycle built prior to 10/10/2017, a new pump assembly is required..."
Picking up my bike up late tomorrow. 2018 Stage 4, purchased around 8/30/17. When I stopped by today I asked them to double check again that the new pump was built after 10/10/17. Dealer said the box Harley sent last week had December 17on it. Wondering if thats when the box was fulfilled or the true date of the pump. The pump is already installed as they are wrapping it up and checking it out on a dyno tomorrow. Id have hoped Harley pulled all the pre 10/10/17 ones. Thoughts?
Picking up my bike up late tomorrow. 2018 Stage 4, purchased around 8/30/17. When I stopped by today I asked them to double check again that the new pump was built after 10/10/17. Dealer said the box Harley sent last week had “December 17”on it. Wondering if that’s when the box was fulfilled or the true date of the pump. The pump is already installed as they are wrapping it up and checking it out on a dyno tomorrow. I’d have hoped Harley pulled all the pre 10/10/17 ones. Thoughts?
Sounds like rhe oil pump is the correct pump. I would specifically ask if the mech doing the install precisely followed the torqueing procedure as outlined in the latest version of SB1450. Apparently some bikes sumped even with the new pump if the mech did not follow the proper torqueing procedure that was added to SB1450.
Last edited by Heatwave; Apr 13, 2018 at 06:17 AM.
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2018 brand new factory built bikes are still sumping! SB1450 is for bikes with earlier build dates and when followed to a "T" they still sump. Fact not fiction. So the problem is still not resolved and they keep trying the same thing over and over, maybe it time to try something else.
2018 brand new factory built bikes are still sumping! SB1450 is for bikes with earlier build dates and when followed to a "T" they still sump. Fact not fiction. So the problem is still not resolved and they keep trying the same thing over and over, maybe it time to try something else.
Well I'm about to find out for sure .... hopefully it won't be the hard way! The dealer rep will be personally involved onsite in the installation of the Stage IV upgrade on my 2017 CVO Limited. The oil pump has already been confirmed as the latest version and is onsite with all the latest Stage IV components.
The upgrade install is scheduled for the 1st week of May. So I should be able to report out the status of this latest upgrade (this is my 3rd engine and 3rd stage IV upgrade) by mid-May.
As stated earlier, the HD Rep has confirmed in writing that there have been no reports of sumping on any M8 bikes that have the latest oil pump installed following the updated installation instructions in the latest version of SB1450.
I would welcome anyone that has personally experienced engine sumping on their own M8 bike with a stage III/IV kit using the latest oil pump AND and was installed using the latest torquing instructions in SB1450 to share their specific experience or drop me a PM.
Last edited by Heatwave; Apr 13, 2018 at 10:54 AM.
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