Upper end noises
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
OP, listen to Max, might save you some $$. If the scoring on the cam plate was minimal and the pump doesn't show damage that could be caused by excessive runout you many not need a complete tear down. You said run out was "out of spec" but didn't say what the run out was; important piece of information.
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Road Master
Joined: Oct 2012
Posts: 777
Likes: 45
From: Beaumont, Ca
Update: The heads came off and are now headed to a machine shop for a full valve job. The cam plate and oil pump will be replaced. The pinion shaft runout was right on the line at three thousands, so the crankshaft will remain.
And all of this is thanks to the fine work done in 2018 by a Harley stealership in Texas when they installed the Screaming Eagle CNC ported heads, cam plate and oil pump.
And all of this is thanks to the fine work done in 2018 by a Harley stealership in Texas when they installed the Screaming Eagle CNC ported heads, cam plate and oil pump.
Last edited by cgmartine; Mar 11, 2021 at 05:40 PM. Reason: Update
Stellar HDF Member
Joined: Aug 2020
Posts: 3,159
Likes: 2,202
From: College Station, TX
Glad at least the bottom end will survive, that would have added a lot of cost.
Curious part is why the guide came lose. Is it the original guide? Or was it previously replaced?
Valve guides are press fit to .001-.0015, and the person installing the guide should know if the fit is too lose. At this point the options are simple, measure the hold and get an oversize guide that fits correctly. Now the hole has likely been damaged and will require honing to an over size, but the trick is maintaining alignment with the valve seat. A good machine shop can do that, as long as the guide hole isn't damaged beyond the max guide oversize service options. But there are still some options, but hopefully it will go smoothly and won't require that.
good luck,
Paul
Curious part is why the guide came lose. Is it the original guide? Or was it previously replaced?
Valve guides are press fit to .001-.0015, and the person installing the guide should know if the fit is too lose. At this point the options are simple, measure the hold and get an oversize guide that fits correctly. Now the hole has likely been damaged and will require honing to an over size, but the trick is maintaining alignment with the valve seat. A good machine shop can do that, as long as the guide hole isn't damaged beyond the max guide oversize service options. But there are still some options, but hopefully it will go smoothly and won't require that.
good luck,
Paul
Seasoned HDF Member
Joined: Nov 2016
Posts: 5,801
Likes: 809
From: South Carolina
I too was unable to check out your noise? I recently had a ticking that I guess I was the only one who could hear it? Just had heads replaced and so far so good no ticking.. I'll look at the heads this weekend to see what I can physically see might have been the issue..
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
I developed a ticking last weekend on it's first time out this spring that got progressively louder in the 5 mile run to a store. Shut it down and found the issue right away. The rear exhaust adjustable pushrod jam nut installed a year ago decided to work loose. I reluctantly went to these when doing cams despite my better judgement against them.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
Last edited by 60Gunner; Mar 27, 2021 at 09:29 AM.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
Likes: 7,968
From: poway
I developed a ticking last weekend on it's first time out this spring that got progressively louder in the 5 mile run to a store. Shut it down and found the issue right away. The rear exhaust adjustable pushrod jam nut installed a year ago decided to work loose. I reluctantly went to these when doing cams despite my better judgement against them.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
I developed a ticking last weekend on it's first time out this spring that got progressively louder in the 5 mile run to a store. Shut it down and found the issue right away. The rear exhaust adjustable pushrod jam nut installed a year ago decided to work loose. I reluctantly went to these when doing cams despite my better judgement against them.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
I'll be checking them occasionally between now and the time I go back to solids. I don't care what anyone says, this common practice born out of laziness to pull the heads is an unecessary risk and I know some builders that wouldn't be caught dead using adjustables. This was enough to bring me back to my senses.
Grand HDF Member
Joined: Sep 2017
Posts: 4,359
Likes: 1,219
From: Dubuque, IA
Solid push rods will solve the problem but so will a wee bit of red Loctite as Smith Brothers instructs for their push rods; has worked for me for years. Two bikes with "built" motors, many miles, no loose jamb nuts. I did have one of the early SE Quick Install Tapered jamb nuts break on me but that's a story for another thread.
I may be wrong but...
Solids have other advantages such as weight besides not flexing too.
The adjustables just make me nervous especially given how hard I ride much of the time. This could've had much worse results.
I'll loctite them for now but I'm seriously leaning towards going to custom made solids next time the heads come off anyway. I didn't listen to that little voice in my head telling me to do it when I did .030 head gaskets last fall.
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