Dull knocking on 95 fxstc
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Cruiser
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Dull knocking on 95 fxstc
My bike sounds as if I have something hitting in the top end. Sounds like a dull, echoey knock of some kind.
I double checked the adjustable pushrods for 3 turns past zero lash when I put the ev27 cam in. Any ideas? Thanks.
I double checked the adjustable pushrods for 3 turns past zero lash when I put the ev27 cam in. Any ideas? Thanks.
Seasoned HDF Member
Joined: Jun 2010
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From: Upstate New York
failed tappet roller? Bad wristpin bearing? First check the exhaust system for a header leak. If you've had the exhaust system off to change the cam, you may need to retorque the exhaust nuts a time or two. This is especialy so if you changed the gaskets. A slight header leak can mimic a loose pushrod. I know this from experience.
Stellar HDF Member
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From: Middle of Kansas
Did the noise just start after installing the cam? If so, many say the EV27 makes the valve train much noisier.
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Cruiser
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My bike, 94 evo, is noticeably louder with the ev27. The entire valve train is noisy... all on the upper end. I also am running andrews adjustable pushrods, and even adjusted properly, the system is noisy. But, I will say that the noise is more like a sewing machine operated by a steam engine lol! What I'm trying to say is that it is not like you described. Check that your lifter blocks are still tight, and put a listening mic or even a long screwdriver and make sure that noise is coming from the top end.
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From: South Carolina
Did you check the cam gear size compared to the pinion gear before installing the cam?
You may be hearing the sound of excessive gear lash.
How many miles are on the lifters?
Did you replace the inner cam bearing?
How many miles are on the outer cam bushing?
Don`t accept the old wives tale about the EV27 being noisy, that is just an excuse to not solve the problem, there is more involved in a cam change than simply swapping out cams.
I have an EV 27 in my Evo, it is very quiet.
You may be hearing the sound of excessive gear lash.
How many miles are on the lifters?
Did you replace the inner cam bearing?
How many miles are on the outer cam bushing?
Don`t accept the old wives tale about the EV27 being noisy, that is just an excuse to not solve the problem, there is more involved in a cam change than simply swapping out cams.
I have an EV 27 in my Evo, it is very quiet.
Last edited by Dan89FLSTC; Jun 23, 2012 at 07:39 AM.