new cam...
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Road Master
Joined: Oct 2009
Posts: 1,132
Likes: 36
From: Las Vegas
new cam...
2021 Road Glide ---- October, 2022, installed SE torque cam, and SE high flow air cleaner. (stage II) Always getting engine knock beginning at 45 MAP load, on up until I let off the throttle a bit. Two different Harley dealers said bike was fine after they did a diagnostic. Both said I need higher rpm's with that cam. So, did lots of testing with SE tuner. Mostly 4th and 5th gear, making sure I was cruising above 2500, and slowly but steadily on the gas. And....engine knock. Tuner showed knock retard starting and continuing all the way through the engine rpm increase until I let off the throttle. Did compression test. Both cylinders near 200 psi. Increased VE tables by tuner recommendation...no change in knock. Replaced lifters and adjustable push-rods with S&S...no change. Add to this, that when put the bike through mild paces, the engine heats up dramatically...up to and above 300 F. After that happens, the engine is louder and noisier.
I know this is a long shot But at this point I will take any ideas. Yes, I would like to get dyno tuned but the closed and best priced here is $1000. I don't have that right now.
I know this is a long shot But at this point I will take any ideas. Yes, I would like to get dyno tuned but the closed and best priced here is $1000. I don't have that right now.
Seasoned HDF Member
Joined: Aug 2006
Posts: 24,496
Likes: 30,783
From: Pennsylvania
Timing off (to advanced).
May be 1 tooth off on the cam.
May want to take a look in the cam chest and verify the timing marks, may need a new gasket, may not.
Won't cost much to take a look.
May be 1 tooth off on the cam.
May want to take a look in the cam chest and verify the timing marks, may need a new gasket, may not.
Won't cost much to take a look.
HDF Community Team
Joined: Jun 2006
Posts: 12,774
Likes: 2,606
From: san antonio
Both cylinders reading same CCP, cam timing being off not likely. Does the bike seem sluggish? The engine heating up dramatically would point to sumping but engine knock not caused by sumping.
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,095
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From: Poolville
What tuner do you have and can you remove 5* of timing globally with your tuner and do a test ride while data logging?
One more thing are you using the OEM spark plugs?
One more thing are you using the OEM spark plugs?
Last edited by 98hotrodfatboy; May 9, 2023 at 07:33 PM.
Thread Starter
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Road Master
Joined: Oct 2009
Posts: 1,132
Likes: 36
From: Las Vegas
Using new Harley spark plugs. bought 1 month ago and about 300 miles on them. Correctly gapped. and checked twice. Using SE pro tuner. I can remove all of that timing but I think I will try something else. I do have software called MyTune. It will show where a data run added or removed spark, and add that to a table that I can paste to the SE tune.
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Road Master
Joined: Oct 2009
Posts: 1,132
Likes: 36
From: Las Vegas
Was thinking of checking it out. They way I work, it would take a full day to take off the mufflers, and headers, and drain the oil and THEN look in the cam chest. I can do it, but if I can find something else.....
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,095
Likes: 7,622
From: Poolville
Before you take it all apart, a quick compression test will tell you if the cams are on or off.. Normally a tooth off will indicate approximately 30 psi difference between cylinders.. if cams are on it'll be pretty close..A few psi at most..
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Road Master
Joined: Oct 2009
Posts: 1,132
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From: Las Vegas
Did that. 200 rear, 205 front.
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Stellar HDF Member
Joined: Mar 2012
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From: Columbus, OH
M8 one cam guys.......
That's the "Pro" street tuner correct?
I didn't think you can make that much change with those at all
Have you reached out to Rigidthumper? He's pretty sharp with the newer SE tuners
That's the "Pro" street tuner correct?
I didn't think you can make that much change with those at all
Have you reached out to Rigidthumper? He's pretty sharp with the newer SE tuners
