Over oiling
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Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
Over oiling
Pulled out about 40 oz of oil out the sump drain. Took everything apart because I just installed aftermarket pump and plate. As I do. I always spin engine with starter while PR are out. This pumps the lifters and shows me I am primed with pressure before I move on. Rear lifters were putting out more oil than I have ever seen in any engine. Further investigation. I found this. Thats a lot of unmetered oil entering the engine.
Last edited by hrdtail78; Jan 30, 2019 at 01:39 PM.
Good catch Jason. You had me thinking about your issue a lot yesterday. This could explain a lot. Be prepared for all the M8 fanboys to come in and say this isn't an issue.
Outstanding HDF Member
Joined: Oct 2009
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From: Smalltown,USA
We heard HD changed the crank in 2019 Motors. I seen one from a 117 and it had hole cut out. I will agree it's a casting problem,but hey will never admit that or recall it. When the flat track boy's come to the Indy mile I'm gonna pick a few minds. They usually stop by the shop for a few cold one's.
We heard HD changed the crank in 2019 Motors. I seen one from a 117 and it had hole cut out. I will agree it's a casting problem,but hey will never admit that or recall it. When the flat track boy's come to the Indy mile I'm gonna pick a few minds. They usually stop by the shop for a few cold one's.
And no, I don't suspect they would ever admit to it, they'll quietly make changes and go on business as usual. This was an excellent catch by Jason.
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Road Warrior
Joined: Mar 2013
Posts: 1,923
Likes: 587
From: Alorton, Illinois
I don't know if this is a casting flaw or a breakthrough when drilling the passage to the main feed gallery. Maybe it was thin and pressure made the hole? Don't know. What I do know. I will continue to pump up my lifters with the engines's pump.
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Outstanding HDF Member
Joined: Oct 2009
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From: Smalltown,USA
I might make the indy mile this year. I used to build engines and tune for Roeder Racing in Ohio. If you've been following flat track for awhile you've more than likely heard of George "Geo" Roeder, his brothers and his dad.
And no, I don't suspect they would ever admit to it, they'll quietly make changes and go on business as usual. This was an excellent catch by Jason.
And no, I don't suspect they would ever admit to it, they'll quietly make changes and go on business as usual. This was an excellent catch by Jason.
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I'd say the jury is out weather it's solved or not. What we do know is Jason had a bike sumping (badly) and he found this issue. It'll be interesting to see if anyone else with a sumping bike finds the same issue. To me if this is the cause it could explain why some sump, some don't, some are worse than others, why some go many miles without issue then start sumping.
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Joined: Jan 2008
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From: State of Confusion
I'd say the jury is out weather it's solved or not. What we do know is Jason had a bike sumping (badly) and he found this issue. It'll be interesting to see if anyone else with a sumping bike finds the same issue. To me if this is the cause it could explain why some sump, some don't, some are worse than others, why some go many miles without issue then start sumping.