I have a 2003 Super Glide. Just had some mod's done: the 96 hydraulic tensioner upgrade, new SE 204 cams and adjustable pushrods and lifters installed. Didn't have any noise to speak of in the rocker boxes before this work. Have some valve train noise now. I decided to pull the pushrods to take a look. I put the Cams on the Base Circle positions to pull the pushrods out to reinstall and adjust to the new SE pushrod specifications of 2.5 turns from zero lash. 2 questions: (1) I assume the new lifters (HD 18538-99C) are okay with the 2.5 SE pushrod adjustment past zero lash. Can anyone verify this? Also, (2) I wiped the oil from the pushrods when I removed them but didn't oil the top and bottom ends when reinstalling them. Is this okay?
There is "usually" a slight increase in valve train noise on a cam upgrade with HD engines. Some folks have solved the noise, others just live with it. The first thing I would do is pull the plugs and the system relay and turn the engine over a few times to make sure the lifters are pumped up. (unless you are real sure they were the first time you did the adjustment)
The go thru the lifter adjustment process again. After you adjust the one, make sure you wait until you can feel the bleed down (twist the pushrod) before you move on to the next one.
2.5 turns is only 15 flats, I may be mistaken but I thought I remember guys going 18 and 20 flats on these lifters, but that's just my own failing memory. In any case more flats would only be a safety feature of piston collision, it would not cure the noise.
It is not always the lifters, some guys have problems with the rockers making noise after installing a cam. They put in shims (the old shovel shims) to try and compenstate for this. Sometimes it worked sometimes it didn't. This is the lateral slide movement of the rockers themselves.
That's about all I can remember off the top of my head. Keep in mind if the sound is not excessive or you don't have evidence that you are mushrooming the ends of your valve tips then some sound is not a harmful thing. Engines in the old days (and many high performance engines) run solid lifters that have noise all the time. As teenagers we thought it was considered "cool" to have a cam in your cage that gave the tappet sound.
You don't want to give the lifters less than the required turns of clearance in an attempt to silence the noise, since this could cause more serious issues if a higher rpm valve float occurred.
Anyhow just trying to give you some insight into the situation from stuff I've read in the past. Good luck with it.