cam and vibes
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Grand HDF Member
Joined: Jun 2007
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From: Lansing mi
cam and vibes
In a stock 96" would a cam job make my King idle rougher? Could it make the motor vibrate more at speed?
I would like to get a bit more pull in the 2000-5000 rpm range. If a cam would make the motor vibe more then I would just leave it as is...Thanks.
I would like to get a bit more pull in the 2000-5000 rpm range. If a cam would make the motor vibe more then I would just leave it as is...Thanks.
Outstanding HDF Member
Joined: Oct 2006
Posts: 2,263
Likes: 36
From: Georgia Mountains
Disclaimer: I'm not a mechanic.
Yes...Rougher idle=more vibration...Depending on cam.
The way it was explained to me, the cam can't do everything perfect. If the cam is designed to "come on" late, as in high RPM, then it will likely idle rough. Listen to any dragster before take off and you'll hear what I'm talking about.
I have a mild Andrews cam. The idle is only slightly rougher...Hardly noticeable. However, it runs WAY smoother at higher RPM's...Velvety smooth at 3000 to 3500.
Yes...Rougher idle=more vibration...Depending on cam.
The way it was explained to me, the cam can't do everything perfect. If the cam is designed to "come on" late, as in high RPM, then it will likely idle rough. Listen to any dragster before take off and you'll hear what I'm talking about.
I have a mild Andrews cam. The idle is only slightly rougher...Hardly noticeable. However, it runs WAY smoother at higher RPM's...Velvety smooth at 3000 to 3500.
Road Warrior
Joined: Jan 2010
Posts: 1,290
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From: Salem, Or
When I installed my SE204's and tuned the bike it actually smoothed out the bike quite a bit. Sure it has more of a lope at idle but when it is going down the road it runs so much better. If you put cams in be sure to get it tuned and you will not be disapointed with the results.
Outstanding HDF Member
Joined: Jan 2010
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From: earth
When I installed my SE204's and tuned the bike it actually smoothed out the bike quite a bit. Sure it has more of a lope at idle but when it is going down the road it runs so much better. If you put cams in be sure to get it tuned and you will not be disapointed with the results.
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Grand HDF Member
Joined: Jun 2007
Posts: 4,598
Likes: 421
From: Lansing mi
When I installed my SE204's and tuned the bike it actually smoothed out the bike quite a bit. Sure it has more of a lope at idle but when it is going down the road it runs so much better. If you put cams in be sure to get it tuned and you will not be disapointed with the results.
I forgot to look, did you put the 204 in a stock 96"?
Road Warrior
Joined: Jun 2009
Posts: 1,943
Likes: 3
From: NYC
in the OEM harley world alone there are a few dozen cams. in the non OEM world moreso. Your question would have a case by case answer. So, for a 257 cam with SE forged pistons (10.5:1 comp) big time vibration at idle when cold...but after a minute or so...smooth as a stock cam.
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my 2011 103" with SE254e's is smooth as silk at idle and all speeds to redline. Unbelievably smooth and idle does not waver one iota from 1000rpms. I vtuned it with the tts mastertune.
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