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Bad cam wear @3000mls , stock 2002 softail

Started by yobtaf103, May 20, 2020, 11:48:22 AM

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yobtaf103

May 20, 2020, 11:48:22 AM Last Edit: May 20, 2020, 01:25:42 PM by Coyote
Yes 18 yr old bike i picked up, thought i'd check cam chest & measure runout for gear drive,
found this, anyone seen this occur before?

[attach=0,msg1347870]

Armin

May 20, 2020, 02:02:11 PM #1 Last Edit: May 20, 2020, 03:11:22 PM by Armin
That looks like a lifter roller failure. Good time to replace inner cam bearings, change to a better cam set and most importantly replace the lifters.

Armin.
Nothing can ruin a Man's day faster than an Almost-Takeoff!

yobtaf103

Quote from: Armin on May 20, 2020, 02:02:11 PM
That looks like a cam roller failure. Good time to replace inner cam bearings, change to a better cam set and most importantly replace the lifters.

Armin.

Getting all Replaced ,but lifters in good condition, see pic bottom right lifter was on the worse lobe !

Armin

Well, hard to say what caused the wear, the exhaust cam lobe of the rear cam shows some wear as well, could be a bad heat treatment during the final production process. I would also replace the lifters for peace of mind.

Armin.
Nothing can ruin a Man's day faster than an Almost-Takeoff!

PoorUB

I am an adult?? When did that happen, and how do I make it stop?!

les

I saw that on a set of S&S 570's.  I attributed it to a mistake during the case hardening process.

FSG


smoserx1

It is hard to tell from pictures but yours look good compared to the stock set I pulled out of my bike with about 70K on them.  One of the lobes was worn so badly you could easily feel the grove with your fingers.  I heard lots of the early stock had hardening issues.  And yes, whatever you put back in replace the lifters too.  Cheap insurance at this point.

yobtaf103

May 22, 2020, 04:24:33 PM #8 Last Edit: May 22, 2020, 04:39:22 PM by yobtaf103
Quote from: FSG on May 21, 2020, 03:53:02 AM
why gear drive ?
As not a fan of the spring tensioners & got a deal on a S&S510G kit cost the same as trying to do hydraulic set up here in UK.
Checked on my other post works as bolt-in for now, but going 95" & comp match

FSG


kd

Quote from: yobtaf103 on May 22, 2020, 04:24:33 PM
Quote from: FSG on May 21, 2020, 03:53:02 AM
why gear drive ?
As not a fan of the spring tensioners & got a deal on a S&S510G kit cost the same as trying to do hydraulic set up here in UK.
Checked on my other post works as bolt-in for now, but going 95" & comp match


How's your crank runout?
KD

yobtaf103

Quote from: kd on May 22, 2020, 09:34:47 PM
Quote from: yobtaf103 on May 22, 2020, 04:24:33 PM
Quote from: FSG on May 21, 2020, 03:53:02 AM
why gear drive ?
As not a fan of the spring tensioners & got a deal on a S&S510G kit cost the same as trying to do hydraulic set up here in UK.
Checked on my other post works as bolt-in for now, but going 95" & comp match


How's your crank runout?
0.002"

kd

Quote from: yobtaf103 on May 23, 2020, 02:10:55 AM
Quote from: kd on May 22, 2020, 09:34:47 PM
Quote from: yobtaf103 on May 22, 2020, 04:24:33 PM
Quote from: FSG on May 21, 2020, 03:53:02 AM
why gear drive ?
As not a fan of the spring tensioners & got a deal on a S&S510G kit cost the same as trying to do hydraulic set up here in UK.
Checked on my other post works as bolt-in for now, but going 95" & comp match


How's your crank runout?
0.002"


Well that makes it an OK candidate suitable for the gear drive if you go that way.
KD

BrianK

In other words:

"Why gear drive?"

"Because I can."    :wink:

yobtaf103

Quote from: BrianK on May 30, 2020, 05:39:16 AM
In other words:

"Why gear drive?"

"Because I can."    :wink:

Yeah that as well :SM:

Hillside Motorcycle

We had witnessed soft cams in that era.....in a Softail also.
Intact roller hogged into the lobe, bike had 1200 miles.
Cam must have missed heat-treat.
Otto Knowbetter sez, "Even a fish wouldn't get caught if he kept his mouth shut"