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.005 runout. Leave alone?

  #1  
Old 05-19-2021 | 07:10 AM
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Default .005 runout. Leave alone?

I’ve got 5 thou runout measured at the pinion shaft on my somewhat built up 2017 Twin Cam. I know Harleys acceptable is .012 (which is insane). I’m thinking while 5 thou isn’t bad, it’s not good. And for longevity’s sake (I’m never selling this bike) I’m wondering if I should bite the bullet and send the short block out to dark horse for rebuild/upgrades ($1700 and a painful month and a half).

If I left the top end where it is (see my sig for all the stuff I’ve done) would you just leave it alone and live with the .005 runout?

Thanks
 
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Old 05-19-2021 | 08:48 AM
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Don't think it's necessary at this time... but it's your wallet..
 
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Old 05-19-2021 | 09:11 AM
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My son rode my 2003 300 miles home from Milwaukee sounding like he was dragging chains. Found the pinion out more than 0.060" and it still ran....
 
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Old 05-19-2021 | 10:02 AM
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Originally Posted by 98hotrodfatboy
Don't think it's necessary at this time... but it's your wallet..
Well I sure don’t want to waste money, but I also want to keep this bike in good shape. So if you think .005 is ok for the long term, great. I’ll leave it alone. But if I’ll be looking at grinding up my cam plate bushings and oil pumps over time, that’s not something I’d like to set.

Originally Posted by Scrmnvtwins
My son rode my 2003 300 miles home from Milwaukee sounding like he was dragging chains. Found the pinion out more than 0.060" and it still ran....
Well, lol, it’ll also probably run on one cylinder, but that’s not something you would want to leave it as, right?
 
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Old 05-19-2021 | 01:38 PM
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I have run gear driven cams at .0045" with no issues; not intentionally though. When I installed the gears, runout was .0025" but, over time, it grew to .0045". I ran it that way for about 15K miles but got the bug for a rebuild for more power. Had Darkhorse o their thing on the crank for the rebuild.
 
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Old 05-19-2021 | 01:44 PM
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Check my profile, I put a Revolution Performance Hot plug forged and welded and trued ASM in it
 
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Old 05-19-2021 | 03:09 PM
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Believe it or not and no Bullshit... my 98 Evo still ran with a sheared crank pin.. Loud as hell but it ran...


 
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Old 05-19-2021 | 04:09 PM
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Originally Posted by 98hotrodfatboy
Believe it or not and no Bullshit... my 98 Evo still ran with a sheared crank pin.. Loud as hell but it ran...
.... which only goes to reinforce my favorite saying - "Evos don't break down... but they occasionally get inconvenient to operate."
 
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Old 05-19-2021 | 05:46 PM
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Originally Posted by 98hotrodfatboy
Believe it or not and no Bullshit... my 98 Evo still ran with a sheared crank pin.. Loud as hell but it ran...
I`ll bet you didn`t get much forward movement though...
 
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Old 05-19-2021 | 07:45 PM
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Originally Posted by Dan89FLSTC
I`ll bet you didn`t get much forward movement though...
Actually I was a mile and a half from home and drove it 40 mph.. I was pretty drunk.. The next morning I drove it down to my shop 5.5 miles.. Made it no problem, just really loud hammering every time a cylinder would fire.....
 

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