Feedback on the changes that have been made on my 2007 SERK;
I had the oil pump ensemble changed to the "SCREAMIN’ EAGLE HYDRAULIC CAM CHAIN TENSIONER AND HIGH-FLOW OIL PUMP UPGRADE", and had the wood cam 54 installed.
It's been two weeks and a couple hundred km done on it, and what I can say is that the overall engine noise has been WAY reduced. I don't really know what exactly was making so much noise before - a general rasping noise, like something not well lubricated enough I guess in retrospect - but with the new pump it's night & day. I can hear my exhaust much better. I can talk to my passenger when stopped with the engine at idle without having to shout, while it was necessary to do so before.
So that's a very good thing.
The stock oil pump flows plenty of oil with plenty of pressure. If you're changing cams, I'd go ahead and put better lifters and adjustable pushrods in there too, as the cost difference is just the parts. And not necessarily HD parts, but if you're dealing with a dealer to do the work, using non HD parts may be an issue.
I have a oil pressure manometer on mine; previous pump was showing between 10 to 15 when idle, and 25 to 30 at 3500rpm; new pumps shows pressures between 25 and 30 at idle, and up to 55 when revving up the engine. I'd say big difference. And I can hear the difference too, although it might be combined factors.
The mechanics seemed to believe that the regular pump on the CVO engines is way too weak; they also changed it on the boss' 2012 CVO street glide and it lowered the general noise, although in a lesser way than what it did on mine. They were kind of amazed how better it was.
Now, you'd think I'm perfectly happy. Sadly, the ticking is still there. It's even *more* present given the rest of the engine noise has been lowered. It does it strong when the engine is hot, nearly not at all when it's cold. The guys took an hour to go around the engine, listening to the internals and trying to pinpoint the origin, and we believe that in my case, it's valve train noise, because it seems to come a bit more from the left side of the engine, and it's definitely coming from the top of it rather than the bottom.
As usual, the answer was: nothing we can do about it, it's because of the new cams you put in. It's the valve that come down to hard or are rebounding or something like that because of the ramp of the cam. But it was doing it with the 255 that were in before! Now it's doing it differently, but it's still present.
This sound is nothing has loud as it seems to be for other people in this thread. I mean, I'm not sure that if I was riding next to my bike driven by someone else I would be able to hear it, but it still annoys the heck out of me. Given the feedback from some knowledgeable forumers, I'd say my next plan of action would be to change pushrods & lifters. That's gonna cost me again, my wife isn't going to be happy, but it's taking joy out of my rides!
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Topic: 110 Motor Tapping (Read 23951 times)