LS Rocker Arm Bearing/Trunion Comparison
05-01-2013, 01:14 PM
#21
The comp trunion upgrade is awesome. The failures you were reading about were due to install error (i.e. bearing being pressed in crooked and or another install error). Just wanted to clarify that it was INSTALL ERROR/ OPERATOR ERROR that caused the failures. Just make sure that you install the bearings square/true and that it rotates around the trunion smooth as silk and your good to go.
05-01-2013, 01:43 PM
#22
The comp trunion upgrade is awesome. The failures you were reading about were due to install error (i.e. bearing being pressed in crooked and or another install error). Just wanted to clarify that it was INSTALL ERROR/ OPERATOR ERROR that caused the failures. Just make sure that you install the bearings square/true and that it rotates around the trunion smooth as silk and your good to go.
05-01-2013, 04:17 PM
#24
You must be high if you think I installed the ones on my personal car, incorrectly. Two had broken clips, out of 16 trunions, 15 had premature galling/internal wear between the bearing and the shaft.
I've probably done 30-40 sets of these. Junk product suited to 224 cams and low revving low power engines. I wouldn't touch it for anything turning rpms, or pushing real power.
05-01-2013, 05:49 PM
#27
1\2" socket on one side and a 7\8" on the other and they
push right out in the vice.
Last edited by sreve; 05-01-2013 at 06:21 PM.
05-01-2013, 06:07 PM
#28
You must be high if you think I installed the ones on my personal car, incorrectly. Two had broken clips, out of 16 trunions, 15 had premature galling/internal wear between the bearing and the shaft.
I've probably done 30-40 sets of these. Junk product suited to 224 cams and low revving low power engines. I wouldn't touch it for anything turning rpms, or pushing real power.
I've probably done 30-40 sets of these. Junk product suited to 224 cams and low revving low power engines. I wouldn't touch it for anything turning rpms, or pushing real power.
I saw the pics in that thread I just did a set and left them submerged in
oil for some time before I installed them.
05-01-2013, 06:14 PM
#30
I thought the CHE were more like $600 exchange or $800 outright.
05-01-2013, 06:18 PM
#31
So, I just hear about this issue here, and was wondering if anyone can give a short summary on what the root cause is of these Comp Cams trunnion kit failures?
05-01-2013, 06:20 PM
#33
They did not offer a replacement.
I'm running CHE rockers and pac 1207x springs now.
05-01-2013, 06:37 PM
#35
Has anyone else shown the same wear on the trunnion? I see circlips have also broke apart. Can't see how, since there shouldn't be hardly any side load on them.
05-01-2013, 07:34 PM
#38
That would be my first suspect if looking for a smoking gun for the root cause. If Comp Cams gets these failed trunnions sent in to them, they would be nuts not to do a materials and hardness test on them. Improper lubrication can also be a factor ... could be that the caged bearings don't allow enough oil to penetrate them. It's just a simple oil bath up on the valve train. If the bearings are too closed up, it could be they lack proper lubrication, and of course increased loads due to crazy cams/springs doesn't help if that's the case.
