Rocker Trunnion Replacement
Team Owner
Joined: May 2001
Posts: 87,330
Likes: 1,589
From: Western NY
Too bad you didn't mention you were going to do this job, beforehand. I could have sold you the Comp kit that I had in my car for only a couple thousand miles. I installed it after hearing about the issues people were having with the OE needle bearings, but when I heard about how much quieter the rockers got, with the bronze bushings installed, I removed the Comp bearings and installed the bushings. The Comp bearings/trunnions are currently boxed up, and sitting on my shelf.....
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
I've done many sets on a bench vise and never had an issue... these things are not that tightly pressed in that you need a press, if you already own a press by all means use it but I wouldn't run out and buy one just for this... after pressing the old bearings out I clean the rocker bearing surface areas with scotchbrite and then spray the rockers down with brake cleaner and then shoot them with compressed air to get any remaining dirt or debris removed... then use fresh oil on the rocker bearing surface areas as well as the outside of the new bearing races and trunnions before you press the new bearings in, once the bearing races and rockers are oiled up they will press in with minimal effort
Team Owner
Joined: May 2001
Posts: 87,330
Likes: 1,589
From: Western NY
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Le Mans Master
Joined: Jun 2004
Posts: 6,231
Likes: 65
From: Seattle WA
St. Jude Donor '14
I used the Summit tools at the time I did mine as CC didn't have their kit with the tooling yet.
It was a complete breeze; my only observation is to take your time; IMHO (and this always sets people off) the failures I've seen have been due to the bearings being installed wrong, mostly from people not using the jig (or other tooling). I did mine in my vise; no press needed.
I have some 25K miles on this since I did it along with replacing the valve springs.
It was a complete breeze; my only observation is to take your time; IMHO (and this always sets people off) the failures I've seen have been due to the bearings being installed wrong, mostly from people not using the jig (or other tooling). I did mine in my vise; no press needed.
I have some 25K miles on this since I did it along with replacing the valve springs.
