THIRD-GEN92

ok guys i just replaced my tr230 for a Trak cam specs are 232/235 644/592 112lsa, we installed patriot gold dual valve springs kit with the set up, everything looked fine and it turned on right away we left it on for a while and then truned it off to add coolant, the second time we turned it on i heard a clicking sound so i took off the vavle cover and i saw a broken bearing on the rocker on the intake side so i replace the rocker with another one from a extra set, i fired it up and again i heard the same clicking sound on the oppoiset side so again i took off the valve cover and saw another broken bearing on a intake rocker i figered something is wrong but i continued on replacing the rocker so i fireded it up one more time and the dam clicking was there again, it was another intake rocker with the same problem. i called thunder racing and they said i needed to install comp cams 921 spings only with the trak cam, i dont know what the diffence is on the springs, there both .650 max lift, can someone please help me figure this problem out.

Dutchesscamaro

iTrader: (1)

It might be worth sending the stock rockers to Harland Sharpe, for ~$250 they replace the trunions (sic) and use clips to hold the assembly together. Well worth the $$.

vettenuts

iTrader: (4)

Did you fill the rocker body (where the bolt is) with oil? Wondering if lack of oil at startup and high spring loads are overloading/heating bearings. Not sure what heavier springs are going to do, especially if they failed at idle which you have indicated. Something is wrong and you need to figure out the problem.

redtail2426

iTrader: (10)

how is your piston/valve clearance,just a thought.

THIRD-GEN92

seems to be that all my rocker bearings on the intake side are broken, exhuast ones are ok. could this be coil bind? woundering cause lift on the intake is .644

CAT3

iTrader: (9)

Very well could be and would make sense.

THIRD-GEN92

before i purchased the cam i asked thunder racing if piston to valve clearance was an issue on a stock ls1 motor. they said that if my heads were never removed, which there arent, that there shouldent be a problem and that there should be more than enough clearance.

vettenuts

iTrader: (4)

Coil bind is logical, the binding would really load the bearings in the rocker, and the lifters too. Did you roll it over by hand? The retainer may also be hitting the seal.

THIRD-GEN92

i did'nt roll it over by hand but i think thats what im gonna do right now, i think there binding alot and the rocker is getting kick off to the side alittle, and are twisting the bearings off imo

aux_fast_cam

I think that cam is going to require an exotic valve train setup to be right. I think I would reconsider cam if it were mine.

THIRD-GEN92

you think so, now im confused.... na i think i just missed out on some ajustments somewhere, still trying to figure it out

SPEEDYws6

iTrader: (9)

Since it's only happening on the intake side make me think it is a spring issue. Like said above, either coil bind or the retainer is coming in contact with the seal which should be really easy to tell. I don't think you should change cams, just get the recomended springs. I think you will find that that is where your problem is.

THIRD-GEN92

thunder racing recomendes 921's, but i am using patriot dual's, is there a differance in there design?

Patrick G

iTrader: (14)

Comp 921s are designed to handle more lift plus they have greater pressure. That's what I'm running with my TRak cam. Stock rockers and stock lifters. No problems at all.

DaddySS

I would say coil bind, why not call Thunder and ask them the question?

vettenuts

iTrader: (4)

Coil bind on the 921 is 1.04 and on the Golds is 1.09 according to my information. Do you have the Golds heavily shimmed? What is the installed height?

Gunnar@Patriot

iTrader: (20)

Did you use the spring bases and seals that came with the spring kit?

THIRD-GEN92

I gave a call to you guys at patriot first thing in the morning, after i told them what was happening, that was the frist thing they asked me, no i did not use the bases and seals , and they said theres your problem, so i finally swaped them out and now it's working great. i let idel for a while then i took it out for a spin, the thing runs like a champ. Ill be out geting it tuned tomorrow ill keep you all posted on the results thanks guys.

slowredz

iTrader: (23)

That a bullshit response from Thunder, they should be more helpful than that and ask some more ???s about your setup and not just recommend you spend another $500+ on something you dont need. that makes me never want to deal with them

FUN LS1

It might seem that way at first, but do you really expect TR guys to know what comes in the Patriot Gold kit, and what might have been left out of their install process? Who elses springs should TR guys know how to troubleshoot? See what I mean?