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Sportster Motorcycle - Bottom End Cams, Cases, Gears, Flywheel, Piston Conecting Rods, Oil Pump, etc...

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  #11  
Old 1 Week Ago
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Bryan1976 Bryan1976 is offline
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Have you checked with Hammer? They may have a grind that will match what you are looking for and they are designed to run quieter. When I ran there 560 grind they ran quieter than the SE 497's.


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Don't cry because your CVO cant keep up with my sportster after all its a girls bike remember Blue collar knuckle buster.
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  #12  
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XL Dane XL Dane is offline
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Yes I wrote Aaron, but it seems there is nothing to do about it. The 570 cams use the previous coarse gears that H-D abandoned some years ago. They require very precise center distance between the bushings to run silent. Unfortunately my engine does not have the exact needed distance, so the noise is extreme as you can hear in the clip.

Out of desperation I tried Lucas Heavy Duty Oil Stabilizer to quiet it down, but it didn’t make any difference.
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  #13  
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Bikeaholic Bikeaholic is offline
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I thought my 570 cams were a lot more noisier than the standard Ws as well. ( i know many say the 570s are quiet ) but not mine. Just to be sure, do you feel you can listen to the lifters seperately as if they all sound the same it is unlikely a bad lifter. Unless the four are gone.

This sound very similar to my bike when i ran the Mobile V- twin oil. I could not stand the noise so i dumped the oil and I placed another oil in ( non-synthetic ) and it did make a big difference. In fact i just compared a video of my bike ( taken a while ago ) with the engine noise to compare to your video and same sound with the synthetic oil. Although if you happen to hear a clack / clank noise that may be a concern.
Years ago before my 1250 and 570 cams, when my bike was stock, i used the screwdriver to ear method to track down a noise at cam area and it was a bad Number 2 bushing, so i have had some experience, and this had a slight clank type noise. I do not think i hear this in your video.
I read you have placed the Lucas stabilizer and it made no difference. Maybe a complete change of another oil? I really hope it is this simple.

Last edited by Bikeaholic; 1 Week Ago at 03:20..
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  #14  
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XL Dane XL Dane is offline
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Thank you for the ideas. The noise started immediately after changing the cams, and most of the time it is fairly even and IMO sounds like gear meshing. Sometimes in idle though there is a slight clacking noise that goes away as soon as the rpm is raised a little. The gear noise remains at all times though.

At first I used Liquimoly 20W50 and then changed to Motul 20W60 ester based racing oil. Finally I blended 20% Lucas Stabilizer into that. None of this made any noticable difference. What oil did you get the best resultat with? Is the video you mention online?

I certainly understand why H-D implemented the current high-contact ratio gears, that eliminates this problem. On the other hand I dont understand why the aftermarket cam producers do not adopt the solution.
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  #15  
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Bikeaholic Bikeaholic is offline
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I would hate you to spend more money on oil but I use Royal Purple HPR 20/50. Maybe it is worth dropping out the oil as you can investigate for any metal flakes. Bronze colour is often from bushings. Keep the oil filter as you may want to cut it open. I would suggest the mechanics stethoscope ,(although the long screwdriver to ear worked for me) and listen on outside of cam case where the outer bushes are placed. If a clank noise is present you will be able to zero in on it. Noise will transfer a bit. Also use the scope for other areas if needed.
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  #16  
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XL Dane XL Dane is offline
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Well, I think all things considered it is a matter of too much clearence between the gears, and no oil can change that.

I am f......, so I will probably scrap the 570 cams and reinstall the W’s when the season is over. Most expensive paperweights I have ever bought.
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  #17  
Old 1 Week Ago
Bikeaholic Bikeaholic is offline
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Yes understand. Maybe you can sell the 570s to a forum member. At least not a total waste. When you do the cam change i think this a great opportunity to inspect all the areas of concern. All the best. Ride safe.
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  #18  
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XL Dane XL Dane is offline
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Thanks, and the same to you
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