Cams
Thread Starter
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Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
I think I may have found what the issue is with the hesitation. I'll have to run some preliminary checks first before tearing back into it.
My guess is that it's sumping (drowning the crank in oil; robbing power), even though I have oil pressure.
Stellar HDF Member
Joined: Mar 2007
Posts: 2,120
Likes: 192
From: Lakeland, FL
I would pull the drain plug on the bottom of the case to check before going back into the motor. Save yourself some work. My understanding of sumping is not that is causes low pressure, but that the pump doesn't scavenge well causing the oil bag level to go low(er). I may be wrong, though. It would rob horsepower, but I'm not sure it would cause sputtering. Perhaps you have an intake leak?
Thread Starter
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Club Member
Joined: Feb 2008
Posts: 11,483
Likes: 39
From: Passaic County, NJ
I would pull the drain plug on the bottom of the case to check before going back into the motor. Save yourself some work. My understanding of sumping is not that is causes low pressure, but that the pump doesn't scavenge well causing the oil bag level to go low(er). I may be wrong, though. It would rob horsepower, but I'm not sure it would cause sputtering. Perhaps you have an intake leak?
I didn't remove the intake at all so I don't necessarily think it could be an intake leak but I s'pose anything is possibly.
Last edited by SC-Longhair; May 28, 2010 at 08:58 AM.
Outstanding HDF Member
Joined: Apr 2009
Posts: 3,056
Likes: 251
From: Connecticut
Hey Vic, I haven't been on here much lately. After getting your text I thought I'd come on and check your progress. The bike looks good. Love the pipes!
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Thread Starter
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Club Member
Joined: Feb 2008
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From: Passaic County, NJ
Thanks, George.
One thing that has been puzzling me....a few weeks back when I rode to Murrells Inlet for bike week, and sitting in traffic my rear cylinder was so hot it actually burned my leg. I couldn't touch my jeans.
Well, the issue is the same after the cam swap. Extreme heat would be too lean, right?
One thing that has been puzzling me....a few weeks back when I rode to Murrells Inlet for bike week, and sitting in traffic my rear cylinder was so hot it actually burned my leg. I couldn't touch my jeans.
Well, the issue is the same after the cam swap. Extreme heat would be too lean, right?