Crank run out..
Seasoned HDF Member
Joined: Mar 2007
Posts: 66,948
Likes: 4,573
From: TOAK western branch
Sure if you got 2-3k id go for it!
Road Warrior
Joined: Jan 2007
Posts: 1,415
Likes: 18
From: Belmont, MI
Rick
Last edited by Egldr05; Feb 10, 2013 at 05:13 AM.
Road Warrior
Joined: Oct 2010
Posts: 1,597
Likes: 1
From: Frederick, CO
I should add I have good reason to be fussy. I put a 98" motor together with gear drive (.0015 runout) and below was the result after the crank slipped. It pretty much destroyed the motor. I put it back together with a DK crank and added the Timken bearings. I vowed from that day on to always build from the bottom up. That's one of the reasons I built my 120" instead of the crate motor.....peace of mind.
Rick
Rick
Road Captain
Joined: Apr 2009
Posts: 531
Likes: 4
From: Chile Flats, AZ
Forced Rebuild: Crank Runout Fault
Last two HDs cranks spun.... too much OEM runout was the stated reason.
Began both rebuilds (a 117" and a 107") with welded, trued, balanced cranks which really smoooothed the engine out -- noticeably.
A 'do it once' build begins with the foundation.... the crank.
YMMV, but, for me, it's the crank because HD no longer does the best OEM products... but they're not the only company that is run by bean-counters these days....
I will say that ESP pays off... if you ever spin a crank... both ESPs, for me, paid for themselves at least 4 times over...
OK, back to the OP subject...
Elite HDF Member
Joined: Sep 2007
Posts: 4,928
Likes: 69
From: Near Myrtle Beach, SC
Here's my 2010 measurement. I was curious so I bought the Fueling setup and measured it when I did the cam swap. A tad over .004 at 13,000 miles. I have an esp, but even if I didn't, I wouldn't lose any sleep.
Cruiser
Joined: Oct 2009
Posts: 209
Likes: 1
From: S.E. Indiana 40 miles west of cincinnati
I sent a brand new OEM crank to Rev Performance for true and weld .the sheet that they sent back said this:
Original runout on pinion inner: 0.004
Original runout on sprocket inner:0.004
Original runout on pinion outer: 0.003
If these inspection numbers are legitimate, I'd have to say that they are not to impressive for a brand new factory crank on truing stand
Original runout on pinion inner: 0.004
Original runout on sprocket inner:0.004
Original runout on pinion outer: 0.003
If these inspection numbers are legitimate, I'd have to say that they are not to impressive for a brand new factory crank on truing stand
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
Elite HDF Member
Joined: Sep 2007
Posts: 4,928
Likes: 69
From: Near Myrtle Beach, SC
Extended Service Plan. This is extended warranty coverage that must be purchased before your original factory warranty expires if you want additional coverage down the road.
With all the mods I have make to my scooter, I am sure that I have screwed the pooch on mine!
With all the mods I have make to my scooter, I am sure that I have screwed the pooch on mine!
