orangeapeel

iTrader: (18)

I know lots of people are doing them as of lately, so lets see a Comp Cams trunion upgrade write-up/how-to with detailed pictures. First person to have a really legit document posted up will get a unique title change. "Trunion King"

DO WORK SON!

BIG_MIKE2005

iTrader: (116)

LOL, there ya go. A good write up on this would be nice to have stickied for sure.

orangeapeel

iTrader: (18)

Thats the plan. Seems to come up a couple times a day. Make everyones life easier if we could just direct people inquiring about it.

bene

iTrader: (16)

Subscribing. I'm pretty much doing this process tomorrow. I lack a press to use and those nifty little tools to disassemble the stock rockers so I gotta figure out how to do this.

S10xGN

iTrader: (11)

Available online right here.

Squirts11

iTrader: (14)

I would also like to have such info available, as I'm sure this will be one of the next upgrades I do.

odarabla

iTrader: (1)

You are right that was stupid!!

orangeapeel

iTrader: (18)

its..... well, bland. I want someone to put what issues to look out for and other things they encountered along the way. You're right though, that is pretty much how to do it.

chris-m

Does anyone supply trunions already "converted" as an exchange service set? or just a set of trunions already converted anyway rather than having to press your own ?

Damian

iTrader: (89)

I've done a ton of them, but I'm not making a write up

ChucksZ06

iTrader: (9)

One of the difficult aspects of doing a write up is that one cannot pass mechanical skills or apptitude through the internet or the telephone. I would suggest the comp directions along with practice as the way to go.

bene

iTrader: (16)

I just completed mine. I don't have a press nor the fancy tools that comp's recommend but I got it done without any mishaps and it's pretty safe the way I did it.

I'll try my best to do a write up for the avg joe to do it. Oh yes I'll include lotsa pictures. lol.

orangeapeel

iTrader: (18)

I guess if you have done it 1 time you got 16 tries to practice.

Excellent!

The reason I started this thread is to keep LS1Tech on a technical track.

01ssreda4

iTrader: (96)

That the right part for ls1s?

13702

bene

iTrader: (16)

DIY LS1 trunion upgrade

items needed:

Comp cam LS1 rocker bearing trunion upgrade kit

LS1 stock rocker arm x 16

tools needed:

any bolt that is similar to the LS1 used long head bolt or use a long LS1 head bolt

small metal mallet


16 mm socket x 2


Medium size vice

deep socket 24 mm

Snap C ring pliers

-Disassembling the LS1 rocker trunion

Place a deep socket 24mm on the floor or any stable flat surface and put the LS1 rocker arm sideways flat on the socket like so in the picture.

Now grab the head bolt like shown above and place the top of the bolt square on the rocker trunion and firmly hold it with your hand.

While securing the bolt, and the rocker on the deep socket, hit the bolt with the mallet four to
five times until the trunion falls out of the rocker arm into the deep socket.
You will do this 15 more times so take your time.

-Assembling the LS1 rocker arm with the Comp cam trunion

Get one disassembled rocker arm,two bearings and the shaft.

Pre-assemble them together make sure you have the letters on both of the

trunion bearing facing outwards and place them on the vice, press the bearings in

(make sure they are even) and the shaft into the rocker arm only halfway as the length of shaft wouldn't let you go all the way in.









Now grab the two 16 mm sockets and place them on each side of the rocker arm.



Make sure the sockets are centered on the bearings. Look at the picture for reference.

Place them on the vice and press them in until you see the bearings flush with the rocker arm.





Do this 15 more times and take your time.

-Snap rings installation:

Once you are done with assembling the rocker arms, its time to put the snap C rings on.

Grab one rocker arm, and one snap ring with the snap ring pliers. Place the snap ring on the notched area and do this again on the other side.





You have now completed one LS1 rocker arm with upgraded trunion, 15 more to go!

Once done, pat yourself on back for being cheap and doing a worthy mod for your rocker arms.

brooknasty

iTrader: (1)

good job bene

Squirts11

iTrader: (14)

Thanks! Another write-up for the archives

Also, I found this link to be very informative w/ tons of pics too:

http://forums.corvetteforum.com/c5-t...n-install.html

garygnu

great write up.would it help any to heat the rockers up in a oven or put the trunnions in the freezer?

Mumbles

iTrader: (5)

What's the purpose for this upgrade?

Are we talking performance gains or is this replacing a weak link in the Valve Train?

Squirts11

iTrader: (14)

The trunion upgrade is greared towards improving rocker longevity/reliability with continual upper rpm use. It replaces the uncaged needle bearings with caged bearings, thus reducing the likelihood of finding the dreaded needle bearings when the oil is changed.