Crank sprocket on cam job.
Seasoned HDF Member
Joined: Jan 2006
Posts: 11,467
Likes: 2,996
From: Charleston, SC
Looks like a nice part. I've seen a few engine builders using it.
Not saying the sprocket couldn't use a tighter fit, but when the sprocket retainer is tightened down it shouldn't move at all.
Has anyone seen a pic or video of the OEM sprocket's mating surface or the pinion shaft all chewed up from rocking back and forth?
Post up if you find one. Would be interesting to see.
Not saying the sprocket couldn't use a tighter fit, but when the sprocket retainer is tightened down it shouldn't move at all.
Has anyone seen a pic or video of the OEM sprocket's mating surface or the pinion shaft all chewed up from rocking back and forth?
Post up if you find one. Would be interesting to see.
Road Warrior
Joined: Mar 2007
Posts: 1,396
Likes: 146
From:
My point was simply after 6 model years now and countless posts about cam upgrade it is never mentioned, referred to, recommended or on parts lists from owners, until now…we can all agree that if it was a problematic part it would have been reported here as nauseum. Bearings, lifters, cuffs, etc. but never mention of sprocket
Last edited by Northside; Sep 25, 2022 at 10:20 AM.
Seasoned HDF Member
Joined: Jan 2008
Posts: 13,621
Likes: 11,353
From: State of Confusion
First I mean no offense to you. I don't post here nearly as much as you do. I've been building Harleys for quite a a few years, but surely don't know as much as some other guys. I'm always learning, and I come here to see what's new. Over the years I've become friends with some of the best Harley engine guys in my area. I've learned plenty from them. On the occasion that I read about something here that I haven't heard of before, I don't post anything. I read posts from guys who have experienced that particular issue. I'm not looking for opinions from those who haven't dealt with that issue. What can I learn from that? I'm looking for facts and this is a valuable resource for that. Again, I mean no offense to you, and you certainly have the right to your opinion, and your right. This is not a major issue that will leave us stranded somewhere. It's just something that is wise to replace if you change cams to gain performance. These sprockets will just give you more accurate cam timing!
"wondering if this is really worth $60. Any thoughts on if this is a good preventative measure purchase or just another non essential item to take my money."
can't define worth because like most of the available replacement parts that's relative and subjective
and regarding his comment "Any thoughts on if this is a good preventative measure purchase"
assumed "preventative measure" usually refers to avoid a potential problem, in which case I stated that the OEM part has no history of being one reported here since the M8 inception
but hey, if it takes up the play / slack which solves a shortcoming of the OEM sprocket not performing properly then it's a good thing..if the OEM performs its duty properly then I'd rather spend the money elsewhere
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
Last edited by OldMike; Sep 25, 2022 at 10:41 AM.
Road Warrior
Joined: May 2007
Posts: 1,433
Likes: 383
From: Arkansastan
Looks like a nice part. I've seen a few engine builders using it.
Not saying the sprocket couldn't use a tighter fit, but when the sprocket retainer is tightened down it shouldn't move at all.
Has anyone seen a pic or video of the OEM sprocket's mating surface or the pinion shaft all chewed up from rocking back and forth?
Post up if you find one. Would be interesting to see.
Not saying the sprocket couldn't use a tighter fit, but when the sprocket retainer is tightened down it shouldn't move at all.
Has anyone seen a pic or video of the OEM sprocket's mating surface or the pinion shaft all chewed up from rocking back and forth?
Post up if you find one. Would be interesting to see.
Seasoned HDF Member
Joined: Feb 2009
Posts: 5,642
Likes: 1,985
From: Cleveland Zoo
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Stellar HDF Member
Joined: Mar 2016
Posts: 2,285
Likes: 965
From: Eastern NC
I have read about this issue and I'm glad Old Mike provided a pic. I say don't let the opportunity pass to make an improvement when you are in the cam chest esp when it's $60 your considering. I imagine you will be replacing other inferior parts, inner bearing, lifters and cuffs.
Grand HDF Member
Joined: Jul 2007
Posts: 3,730
Likes: 8,484
From: Bates County MO
It does happen. It's very rare ( 4 in 10 years) , but I have had to replace flywheels because the machined flat had become a curve. 1 had broken the retaining bolt, so I expect that damage came from the sprocket losing it's support. Pretty obvious rattle. The other 3 all had a lifter tick sound, coming from the cam cavity, that went away above idle.