Twin Cam Warm idle Knock
Stellar HDF Member
Joined: May 2015
Posts: 2,100
Likes: 307
From: mid Michigan
Age has to do with gaskets and miles that usely go with it to check for wear on rockers. I just don't see it that hard to pull the tank but I guess it's easier just to cut rods out and adjust new ones.
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Novice
Joined: Jul 2019
Posts: 16
Likes: 1
From: Richfield Springs, NY
I am back again. The bike is in pieces in the shop. My indy opened the cam chest and took the heads off. He said everything looks great, no sign of any wear. There was less oil in the rear rocker box, but only slightly, and the bike had been sitting for a month and a half. He doesn't seem to find anything wrong and I am not sure what to do. I could swap the SE plate for a Fueling plate at my expense, or he offered to give me a plate out of an '09 if I buy the cams for it. Any advice would be welcome.
Seasoned HDF Member
Joined: Apr 2017
Posts: 9,605
Likes: 20,760
From: Globe AZ
ok. Ill chime in here. I assume being its injected and is a 2001, it has the old style Magneti Marelli injection on it. if so, this requires that the outer cam chain (from crank to rear cam) re-use the original sprockets and chain due to the cam sensor trigger that is part of the cam sprocket. I have this same setup on my 2000, and it was noisy as hell, same as yours when i bought it. I fought the noise for a while until I changed the cam chains themselves. The wear in the flat link chain was enough that the hydraulic tensioner was not able to take up all the slack in the chains, whereas the old spring type (that hastened the wear) had more range of motion (and a piece on the other non tensioned side) to keep tension more constant. I would personally change the cam chains, and re-assemble if all else looks good. Feuling has the old school flat link chains available still, and it was about $70 for the pair of them. Im betting this should take care of a lot of your noise
Road Captain
Joined: Oct 2018
Posts: 539
Likes: 284
From: Coldstream B.C. CA.
To Jbarr's post, the early '99 TC cam plates are the ones that require plugging a port.
I have never seen a push rod worn like the one on the left side of the OPs photo. Just a couple of thoughts/suggestions. First thing I would do is pull the rocker covers after running the motor for a few minutes ans see if oil is pulled in the corners of the lower rocker box. If flow is good, there should be pooled oil. Next, I would start the motor and watch/video oil flow at the rocker arms. It won's spray all over like a small block Chevy but will dribble through. The HD oiling system is based on flow/volume, not pressure. There should be an immediate and constant supply of oil between the push rod and rocker arm. If not, the oil supply to the top end is the issue and the solution is likely in the cam chest.
Apparently the noise did not present before upgrading the cam chest so it would seem that something in the upgrade is the source of the noise. Llike Mattbastard has inquired, which SE cam plate/pump was installed? The OP has not told us what oil pressure is, at idle and cruise which is pertinent. A video of the noise would help as well as knowing oil pressure.
I have never seen a push rod worn like the one on the left side of the OPs photo. Just a couple of thoughts/suggestions. First thing I would do is pull the rocker covers after running the motor for a few minutes ans see if oil is pulled in the corners of the lower rocker box. If flow is good, there should be pooled oil. Next, I would start the motor and watch/video oil flow at the rocker arms. It won's spray all over like a small block Chevy but will dribble through. The HD oiling system is based on flow/volume, not pressure. There should be an immediate and constant supply of oil between the push rod and rocker arm. If not, the oil supply to the top end is the issue and the solution is likely in the cam chest.
Apparently the noise did not present before upgrading the cam chest so it would seem that something in the upgrade is the source of the noise. Llike Mattbastard has inquired, which SE cam plate/pump was installed? The OP has not told us what oil pressure is, at idle and cruise which is pertinent. A video of the noise would help as well as knowing oil pressure.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,940
Likes: 8,037
From: poway
never mind, got sucked into a reresection.
Last edited by Max Headflow; Jun 30, 2021 at 09:35 PM.
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Its ok Max, only a year old. I did PM Rev.Rev. and still haven't received a response. We shall see .......
Ride safe!
Ride safe!
Thread Starter
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Novice
Joined: Jul 2019
Posts: 16
Likes: 1
From: Richfield Springs, NY
Sorry for the late reply, it has been a very difficult spring. Lost my parents in a freak accident and just haven't gotten around to things like this.
In short, I replaced the cam plate with one from an '09 and put in Andrews conversion cams. The sound is still there but to a much lesser degree. I spent a great deal of time cleaning the oil pan and running fresh oil through to remove metal "sludge?" from the oil (changed it at 500 miles and then after another 1000 and again at 1000). I now have 41k on the bike and the oil is continually clean.
I am interested in changing out the chain as mentioned by ScottinAZ. It makes logical sense and would not involve a great deal of money. If I get time this summer, I will try it.
In short, I replaced the cam plate with one from an '09 and put in Andrews conversion cams. The sound is still there but to a much lesser degree. I spent a great deal of time cleaning the oil pan and running fresh oil through to remove metal "sludge?" from the oil (changed it at 500 miles and then after another 1000 and again at 1000). I now have 41k on the bike and the oil is continually clean.
I am interested in changing out the chain as mentioned by ScottinAZ. It makes logical sense and would not involve a great deal of money. If I get time this summer, I will try it.