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Are Comp Cams Trunions Worth it?

Old 03-18-2013, 09:10 PM
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Default Are Comp Cams Trunions Worth it?

I know this has been covered a bunch, and I read a bunch of threads on them, but I'm still not sure. I'm running a torquer V3 and I know that the LSK lobes and high lift are hard on the valve train. I would hate to have needle bearings let loose through the motor, but if its not necessary, I would just save the $150 to put towards a FAST? Plus, the place that is dyno tuning my car says that they never use them and they could cause more problems than they are worth, and I value their opinion because they are very trustworthy place. So what does everyone thing?
Old 03-18-2013, 09:24 PM
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Cause what problems? Yes they are worth it, don't be cheap.
Old 03-18-2013, 09:28 PM
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Do the upgrade. I have no idea what problems that shop thinks they would create as these won't dump needles into the engine like the stock bearings will.
Old 03-18-2013, 11:12 PM
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yes do it, its cheap insurance.. especially if you plan on beating on your car like i do...
Old 03-18-2013, 11:45 PM
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Go with the trunions. The last thing you want to do is try and save money by going cheap on your valvetrain.
Old 03-18-2013, 11:51 PM
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Do the upgrade, it's worth it!
Old 03-18-2013, 11:56 PM
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Ive now broken 3 Comp bearings. Needle bearings can still spit out.
Old 03-18-2013, 11:58 PM
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i upgraded. actually finishing the swap tomm. its with a tsp torquer v3 too.
Old 03-19-2013, 12:29 AM
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Originally Posted by Alpha Male
Ive now broken 3 Comp bearings. Needle bearings can still spit out.
The best thing to do is the CHE upgrade, its a solid one piece design and no needles to spit out.. Its just expensive

you broke 3? Did you use a press to put them on or had someone else do them?
Old 03-19-2013, 05:54 AM
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i recently just did the upgrade, i'd say you should also. couple hundred more is cheap insurance imo.
Old 03-19-2013, 07:05 AM
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Originally Posted by Burken01
The best thing to do is the CHE upgrade, its a solid one piece design and no needles to spit out.. Its just expensive

you broke 3? Did you use a press to put them on or had someone else do them?
Yea, there's something wrong if you broke 3.
Old 03-19-2013, 07:09 AM
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Originally Posted by maxpower_454
Yea, there's something wrong if you broke 3.
I broke 16. Most likely because comp trunions are pieces of ****. CHE bushes, or leave them stock.
Old 03-19-2013, 08:36 AM
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Originally Posted by Alpha Male
Ive now broken 3 Comp bearings. Needle bearings can still spit out.
What cam lobes and springs you have? I think your problem is there, not the Comp upgrade. If you are breaking parts you have an unstable valve train, and you are beating the crap out of your parts. Just like the LS7 lifter failure threads, the lifter is not the problem, its unstable valve train. The lifter just happens to be the part that takes the blame, because it fails first.

Straight from that catalog

The LSK Series has been designed with enhanced characteristics from our latest professional drag racing profiles. These
have excellent ramp quickness. They are VERY hard on parts and not generally recommended in street applications!
The Comp Trunion upgrade is worth the money, I am running them in my new build.

http://www.briantooleyracing.com/com...nnion-kit.html
Old 03-19-2013, 09:24 AM
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Originally Posted by DietCoke
I broke 16. Most likely because comp trunions are pieces of ****. CHE bushes, or leave them stock.


Good Lord. I knew they had a few batches of C clips that were weak, but I've never heard of anything like that. Wow.
Old 03-19-2013, 09:33 AM
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Good ole Comp QC. I'm still going to run them. The factory rockers are the best rockers for these cars. Period. The CHE bushings are probably the best upgrade for them, however.
Old 03-19-2013, 09:38 AM
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Originally Posted by DietCoke
I broke 16. Most likely because comp trunions are pieces of ****. CHE bushes, or leave them stock.
Holy h3ll. You broke 16?! Were they all 16 from the same comp trunion upgrade kit?

Like said above; either you have an unstable valvetrain, or the trunion upgrade kit was installed wrong. Possibly forgot to install all 32 c clips? Haha...
Old 03-19-2013, 09:54 AM
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im still using stock rockers w/o the trunion upgrade. i planned on buying the upgrade this year tho. put about 4k miles on my car since the cam swap and didnt have issues. maybe i got lucky
Old 03-19-2013, 09:58 AM
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Originally Posted by DietCoke
I broke 16. Most likely because comp trunions are pieces of ****. CHE bushes, or leave them stock.
In your thread you said one c-clip snapped off and another had a crack. Also some of the rockers had worn metal on the underside and only on one side of the trunion where they ride in the bearing which says to me factory defects in metal preparedness and hardness practices. I haven't seen another case like yours. IMO it wasn't anything you did to cause the wear on the nderside and as for the c-clip, in the picture you show where the c-clip portion is snapped off the bearing isn't pressed in all the way and it is supposed to be flush which could cause excessive side to side play maybe stressing the retaining clip too much.
Old 03-19-2013, 02:21 PM
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FYI, Lunati does offer Stock rockers with their own trunion upgrade kit(85427-16) for under $300, I'm not sure if they offer their trunion upgrade minus the rockers or not.
Summit also offers a trunion upgrade kit(SME-143002) for the factory rockers which has larger /beefier retainer clip than the CompCam kit, and the summit kit is only $100..
Old 03-19-2013, 03:21 PM
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I rock the Comp Trunions on lots of builds. I like them and never had any issues with any ones that i have put together.

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