Engine knocking/rattling noise
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
I saw rings on the OD of the crank and rings on the ID of the bronze bearing in the support plate. Do you have access to a dial caliper to measure the diameters and calculate the clearance
Tourer
Joined: Sep 2014
Posts: 420
Likes: 5
From: Kingsport, TN
Caused by debris in the oil and/or crank runout. Lighter scuffing can be polished out with Emory cloth.
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
I did test the inner cam bearings and the lifters as described. Seem nice and smooth. I can't justify to myself not replacing the lifters, so I ordered a set of S&S to install, if the noise is still there at least I'll know for sure its not the lifters.
And I agree that maybe the noise isn't actually from the cam chest area. I was able to hear it rattling under idle off the bike and it definitely sounded like it was coming from behind the timing cover. Really couldn't hear it at all on the primary side, but was very obvious on the exhaust side. I know how noises can travel through. And its hard to chase a noise on a noisy v-twin with loud exhaust.
Should be able to get it back together this weekend. If the lifters don't fix it...worst case I wasted some time and have an extra set of 'B' lifters.
And I agree that maybe the noise isn't actually from the cam chest area. I was able to hear it rattling under idle off the bike and it definitely sounded like it was coming from behind the timing cover. Really couldn't hear it at all on the primary side, but was very obvious on the exhaust side. I know how noises can travel through. And its hard to chase a noise on a noisy v-twin with loud exhaust.
Should be able to get it back together this weekend. If the lifters don't fix it...worst case I wasted some time and have an extra set of 'B' lifters.
what do you think about my situation Scott At Hillside?
I finally had some time to get the motor back together (just bought a house and moved recently) and got the weather to cooperate, but the noise is gone.
I didn't change anything but the lifters--installed S&S standards--and the noise is gone. I can't see or feel anything wrong with the old lifters, which seems a little odd, but at this point I don't care cause it runs great.
I'm guessing one wasn't pumping up and causing the rattle.
I didn't change anything but the lifters--installed S&S standards--and the noise is gone. I can't see or feel anything wrong with the old lifters, which seems a little odd, but at this point I don't care cause it runs great.
I'm guessing one wasn't pumping up and causing the rattle.
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
That is the exact sound. I just had a thought though. When I changed my pump out I installed the fueling oe+ pump and the fueling pressure relief spring. I'm wondering if maybe I'm pumping to much volume and pressure now and maybe the lifter is pumping up tight and acting like a solid lifter. It almost sounds like a solid lifter noise. Idk just a thought.
Thanks!
When I got the BB/cams done my indy did upgrade the spring (along with new lifters and cam chain tensioners)...
I figured it was just a new noise to go along with the new parts but it definitely seems to get worse when it gets hot - guess I'll be emailing him that video today
When I got the BB/cams done my indy did upgrade the spring (along with new lifters and cam chain tensioners)...
I figured it was just a new noise to go along with the new parts but it definitely seems to get worse when it gets hot - guess I'll be emailing him that video today
That is the exact sound. I just had a thought though. When I changed my pump out I installed the fueling oe+ pump and the fueling pressure relief spring. I'm wondering if maybe I'm pumping to much volume and pressure now and maybe the lifter is pumping up tight and acting like a solid lifter. It almost sounds like a solid lifter noise. Idk just a thought.
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
Thanks!
When I got the BB/cams done my indy did upgrade the spring (along with new lifters and cam chain tensioners)...
I figured it was just a new noise to go along with the new parts but it definitely seems to get worse when it gets hot - guess I'll be emailing him that video today
When I got the BB/cams done my indy did upgrade the spring (along with new lifters and cam chain tensioners)...
I figured it was just a new noise to go along with the new parts but it definitely seems to get worse when it gets hot - guess I'll be emailing him that video today
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i emailed the video to my indy and said to check the heat shields and exhaust brackets... i will but i'm pretty sure it's in the cam chest...
good luck, i'll keep you posted with that happens over here
good luck, i'll keep you posted with that happens over here
Intermediate
Joined: Nov 2014
Posts: 48
Likes: 0
From: plainwell, michigan
Sounds good man. I'm ordering lifters Friday.