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Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

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  #1  
Old 26th December 2019
NGOT8R NGOT8R is offline
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Default Uh oh!!! Brass flakes/dust (a lot of it too) in my oil

I am 246 miles into the break-in period on my 2019 Iron which has a 1250 conversion. I decided to change the oil today and boy, was I confronted with a big surprise! When I removed the oil filter, I discovered a whole lot of brass flakes/dust inside. I had experienced something similar to this on my sport bike before, but those flakes were copper in color. That turned out to be a #3 rod bearing failure. I don't have a good feeling at all about what I am seeing here though. I am hoping like heck that someone tells me that this is normal and a result of the oil pump gear meshing with the new bronze oil pump drive gear that I installed on the crank during the build. If not, then I know what has to be done.

PS. I took pics of what I am referencing above, but don't want to fool with setting up an account with an image hosting site. However, if someone would like to PM me their email address, I will email them the pics to be posted in this thread.
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  #2  
Old 26th December 2019
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I'll send you my email if it's not already listed.
I'm assuming you lubed everything up good with assembly lube on install?
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Last edited by 60Gunner; 26th December 2019 at 21:18..
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Old 26th December 2019
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Originally Posted by 60Gunner View Post
I'll send you my email if it's not already listed.
I'm assuming you lubed everything up good with assembly lube on install?
Yes, I was very generous with the assembly lube.
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Old 26th December 2019
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Old 26th December 2019
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you had torqued properly the bronze oil pump drive gear...?
according to Hammer site it has to be overtorqued to be in the safe side..

on the 90" inches conv of Sportytrace it came loose for that reason if i remember well
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Old 26th December 2019
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Yeah I forget what I torqued mine to but it was was more than stock. Used red loctite too.
Are you sure they're brass? Oil can make them look like brass. Try a magnet? That IS alot. I could see fine metal specs in mine but not like that.
Cam bushing(s)? Did you clearance everything? Leave a wrench in there? ;p
I'd be pulling the cam cover.

Last edited by 60Gunner; 26th December 2019 at 22:02..
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Old 26th December 2019
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Quote:
Originally Posted by Nibelungen View Post
you had torqued properly the bronze oil pump drive gear...?
according to Hammer site it has to be overtorqued to be in the safe side..

on the 90" inches conv of Sportytrace it came loose for that reason if i remember well
Yes, I bought the Hammer locking tool and torqued it to 80 ft-lbs per Dan’s instructions.
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Old 26th December 2019
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Quote:
Originally Posted by 60Gunner View Post
Yeah I forget what I torqued mine to but it was was more than stock. Used red loctite too.
Are you sure they're brass? Oil can make them look like brass. Try a magnet? That IS alot. I could see fine metal specs in mine but not like that.
Cam bushing(s)? Did you clearance everything? Leave a wrench in there? ;p
I'd be pulling the cam cover.
It looks yellow like brass to me. When I experienced something similar on my sport bike, the flakes were copper in color and it was a spun bearing. I didn’t leave any tools in the cam chest. I wouldn’t call myself an expert engine builder, but to date, I have built two 2015 twin cam motors, one 2019 Sportster and one 2008 GSXR-1000. I have also installed cams in two Milwaukee 8s.
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Old 26th December 2019
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Old 26th December 2019
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i'm sorry for you.... but you know you had to pull your cam cover... maybe it's not too late...
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