Borrowed Time on Crank Run Out
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Cruiser
Joined: Oct 2009
Posts: 190
Likes: 7
From: Mentor, OH
Borrowed Time on Crank Run Out
This sucks!!! 
Thispast weekend I was dropping in a set on 255 cams in my 07 ultra. While in thereI went ahead and checked the run out on the crankshaft. I didnt expect it tobe perfect but to my surprise it was 0.028. I didnt believe it at first so Isetup the dial indicator differently and tried it again and got the samereading. The motor only has 29,000 miles and before this cam change it wasbasically a stock motor except for a stage 1.
The funny thing is its not vibrating excessively and notsumping oil. I inspected the oil pump and brass bushing and they are notshowing any wear. It looks like there is some wear on the end of the crank, butits very very minimal.
Being I dont have the time or money right now to pull thecrank and have it reconditioned I put everything back together and decided torun it like it is for now. I will pay close attention for an increase invibration, a loss of oil pressure and watch for sumping.
Hopefully it makes itthrough this summer and I can tear it down and have it reconditioned nextwinter. I will open it up half way thru summer and inspect everything and recheckthe run out to see if it gets worse. Has anyone else continued to use theirbike with this much run out?
Thispast weekend I was dropping in a set on 255 cams in my 07 ultra. While in thereI went ahead and checked the run out on the crankshaft. I didnt expect it tobe perfect but to my surprise it was 0.028. I didnt believe it at first so Isetup the dial indicator differently and tried it again and got the samereading. The motor only has 29,000 miles and before this cam change it wasbasically a stock motor except for a stage 1. The funny thing is its not vibrating excessively and notsumping oil. I inspected the oil pump and brass bushing and they are notshowing any wear. It looks like there is some wear on the end of the crank, butits very very minimal.
Being I dont have the time or money right now to pull thecrank and have it reconditioned I put everything back together and decided torun it like it is for now. I will pay close attention for an increase invibration, a loss of oil pressure and watch for sumping.
Hopefully it makes itthrough this summer and I can tear it down and have it reconditioned nextwinter. I will open it up half way thru summer and inspect everything and recheckthe run out to see if it gets worse. Has anyone else continued to use theirbike with this much run out?
Stellar HDF Member
Joined: May 2009
Posts: 2,066
Likes: 97
From: Northern VA
This sucks!!! Thispast weekend I was dropping in a set on 255 cams in my 07 ultra. While in thereI went ahead and checked the run out on the crankshaft. I didn’t expect it tobe perfect but to my surprise it was 0.028. I didn’t believe it at first so Isetup the dial indicator differently and tried it again and got the samereading. The motor only has 29,000 miles and before this cam change it wasbasically a stock motor except for a stage 1.
The funny thing is its not vibrating excessively and notsumping oil. I inspected the oil pump and brass bushing and they are notshowing any wear. It looks like there is some wear on the end of the crank, butit’s very very minimal.
Being I don’t have the time or money right now to pull thecrank and have it reconditioned I put everything back together and decided torun it like it is for now. I will pay close attention for an increase invibration, a loss of oil pressure and watch for sumping.
Hopefully it makes itthrough this summer and I can tear it down and have it reconditioned nextwinter. I will open it up half way thru summer and inspect everything and recheckthe run out to see if it gets worse. Has anyone else continued to use theirbike with this much run out?
Thispast weekend I was dropping in a set on 255 cams in my 07 ultra. While in thereI went ahead and checked the run out on the crankshaft. I didn’t expect it tobe perfect but to my surprise it was 0.028. I didn’t believe it at first so Isetup the dial indicator differently and tried it again and got the samereading. The motor only has 29,000 miles and before this cam change it wasbasically a stock motor except for a stage 1. The funny thing is its not vibrating excessively and notsumping oil. I inspected the oil pump and brass bushing and they are notshowing any wear. It looks like there is some wear on the end of the crank, butit’s very very minimal.
Being I don’t have the time or money right now to pull thecrank and have it reconditioned I put everything back together and decided torun it like it is for now. I will pay close attention for an increase invibration, a loss of oil pressure and watch for sumping.
Hopefully it makes itthrough this summer and I can tear it down and have it reconditioned nextwinter. I will open it up half way thru summer and inspect everything and recheckthe run out to see if it gets worse. Has anyone else continued to use theirbike with this much run out?
Seasoned HDF Member
Joined: Apr 2008
Posts: 10,135
Likes: 4,780
From: Sandpoint, Idaho
Seasoned HDF Member
Joined: Jun 2006
Posts: 30,883
Likes: 33,001
From: King George, VA
Patroit HD of Fairfax, VA Built my 103 motor using a stroker crank that had. 019 runout. At about 35K on the motor the head gasket blew and I took it to an indy to fix. He discovered the runout problem along with the destroyed oil pump, cam bearings, cam faces and everything else. The Patriot Service rep told me it was probably because I didn't service the bike properly.
Patroit HD of Fairfax, VA Built my 103 motor using a stroker crank that had. 019 runout. At about 35K on the motor the head gasket blew and I took it to an indy to fix. He discovered the runout problem along with the destroyed oil pump, cam bearings, cam faces and everything else. The Patriot Service rep told me it was probably because I didn't service the bike properly.
the only reason theyre still in business is because they service all the rich yuppies in fairfax and loudoun and are a meeting place for Rolling Thunder
and like def_mute said, check to make sure the reading was in inches and not milimeters
Seasoned HDF Member
Joined: Apr 2008
Posts: 23,053
Likes: 12,327
From: Arkansas
It's my understanding that the MOCO says up to 0.012 is acceptable (which I think is B.S) so 0.028 sounds way out there.
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Road Warrior
Joined: Apr 2011
Posts: 1,443
Likes: 9
From: North Carolina
does anyone in here actually know what .012 looks and feels like?
Is it acceptable, ***** no. Thats a **** poor excuse to not have good QC
Question is, what does that .012 runout do under crank pressure?. It gets checked under normal revolution's not when be loaded with cylinder pressure and explosion, coupled with possibility of detonation, primary chain slack and other driveline load.
Is it acceptable, ***** no. Thats a **** poor excuse to not have good QC
Question is, what does that .012 runout do under crank pressure?. It gets checked under normal revolution's not when be loaded with cylinder pressure and explosion, coupled with possibility of detonation, primary chain slack and other driveline load.
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Joe Kucinski
Seasoned HDF Member
Joined: Apr 2008
Posts: 23,053
Likes: 12,327
From: Arkansas
does anyone in here actually know what .012 looks and feels like?
Is it acceptable, ***** no. Thats a **** poor excuse to not have good QC
Question is, what does that .012 runout do under crank pressure?. It gets checked under normal revolution's not when be loaded with cylinder pressure and explosion, coupled with possibility of detonation, primary chain slack and other driveline load.
Is it acceptable, ***** no. Thats a **** poor excuse to not have good QC
Question is, what does that .012 runout do under crank pressure?. It gets checked under normal revolution's not when be loaded with cylinder pressure and explosion, coupled with possibility of detonation, primary chain slack and other driveline load.
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