Trunion upgrade = more noise
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,185
Likes: 265
From: Virginia
Trunion upgrade = more noise
Has anyone had more valve train noise after doing the trunion upgrade? I had mine done recently with the BTR kit and the sewing machine ticking is noticeably louder. It's not a big difference and doesn't sound real bad but there is a difference. Anyone know why this would be?
Pro
Joined: May 2013
Posts: 740
Likes: 83
From: MN
Sorry, but aftermarket needle-bearing rocker trunnion kits are bad news. I believe they should be avoided:
https://www.corvetteforum.com/forums...n-upgrade.html
https://ls1tech.com/forums/generatio...12k-miles.html
https://www.corvetteforum.com/forums...re-summit.html
https://www.corvetteforum.com/forums...n-upgrade.html
https://ls1tech.com/forums/generatio...12k-miles.html
https://www.corvetteforum.com/forums...re-summit.html
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,185
Likes: 265
From: Virginia
Sorry, but aftermarket needle-bearing rocker trunnion kits are bad news. I believe they should be avoided:
https://www.corvetteforum.com/forums...n-upgrade.html
https://ls1tech.com/forums/generatio...12k-miles.html
https://www.corvetteforum.com/forums...re-summit.html
https://www.corvetteforum.com/forums...n-upgrade.html
https://ls1tech.com/forums/generatio...12k-miles.html
https://www.corvetteforum.com/forums...re-summit.html
Acct Suspended APR 2026 by request
Joined: Dec 2010
Posts: 10,367
Likes: 1,272
2020 Corvette of the Year Finalist (performance mods)
C5 of Year Winner (performance mods) 2019
perhaps it's just transmitting more noise than the factory rockers from your lifters tapping... it seems like you have tried everything else possible to fix your tapping issue except for changing what you presume is the root cause (the lifters)... if you are that concerned you should take the heads off and swap them out, you were already part of the way there when you changed the trunnions
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,185
Likes: 265
From: Virginia
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Pro
Joined: Jun 2010
Posts: 620
Likes: 18
From: Travelers Rest, SC
Did they switch recently? About a year ago I had installed their trunion upgrade kit and it was a needle bearing kit. Didn't see a bushing kit on their website, any info would be helpful!
Last edited by MSUGTO; Apr 29, 2018 at 09:46 PM.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,185
Likes: 265
From: Virginia
I could be wrong but I had a shop order and install their kit thinking it was a bushing kit. I guess I should have verified that first. Does anyone know for sure what their kit is?
Burning Brakes
Joined: May 2014
Posts: 763
Likes: 215
From: Detroit
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,185
Likes: 265
From: Virginia
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.
Pro
Joined: Jun 2010
Posts: 620
Likes: 18
From: Travelers Rest, SC
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.
Correct, the BTR kit is needle bearings. A friend of mine installed these, and the new bearings felt significantly notchier than stock in my hands. I have not heard the car run with them installed yet, though, so I'm not sure if it translated to more noise.
He called BTR and discussed the notchiness with them, they assured him that it's normal.