LS1 Spring retainer
Thread Starter
Teching In
Joined: Feb 2014
Posts: 35
Likes: 0
From: Savannah,ga
LS1 Spring retainer I have PRC .650 springs right now on my car.Yesterday I had an issue which I guess points to a failed lock or the lock was never seated correctly because I pulled my valve cover and discovered I had a valve spring that tried to shoot off but got caught by the rocker arm.Can I run another retainer besides a PRC one and it work on those springs?Or is it possible to not have to buy an entire retainer kit?I only need one.I'll attach a pic of how it looks right now.
Thread Starter
Teching In
Joined: Feb 2014
Posts: 35
Likes: 0
From: Savannah,ga
As far as I know it didn't.I had just fired it up after the cam swap,got out of the car while it was running and was checking everything under the hood and about that time I heard something break so I ran around to shut it off,but it shut off before I got to it.I havn't messed with it yet,been raining all day today.Hopefully it did not hit the piston.That was actually the second start up after the cam swap,the first start up it ran for about 30 seconds and broke 11 of the rocker trunions,so I ordered the comp trunion upgrade kit and did that...and now this happens.
Thread Starter
Teching In
Joined: Feb 2014
Posts: 35
Likes: 0
From: Savannah,ga
I didn't have any problems with the trunions after I upgraded to the comp ones though is what stumps me.If it broke those to I would think I had a serious problem,but you may be right.I just don't know what would have caused this issue I have now.
Thread Starter
Teching In
Joined: Feb 2014
Posts: 35
Likes: 0
From: Savannah,ga
Yea I'm not starting it anymore right now for sure.I have spoke to several people I know running the same setup I have and no one had any issues,called Texas Speed and told them my setup,they say that's what they run normally also.I'm just wondering if those locks on that spring were not seated or just failed for some reason,because it didn't happen to any other ones.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo Yea I'm not starting it anymore right now for sure.I have spoke to several people I know running the same setup I have and no one had any issues,called Texas Speed and told them my setup,they say that's what they run normally also.I'm just wondering if those locks on that spring were not seated or just failed for some reason,because it didn't happen to any other ones.
PTV with that cam is not supposed to be a problem with stock heads and head gaskets, but a change in either can trigger PTV issues. Do you know whether the heads are stock and untouched? Did you degree the cam or install it dot to dot?
Teching In
Joined: Jan 2012
Posts: 18
Likes: 0
im no expert, but it seems to me that those springs are way too aggressive for those stock rockers if they broke 11 trunnions and on second startup it did that to that rocker arm. is this a high mileage engine? was everything stock prior to the cam install?
if you are lucky enough to not have ptv contact, check for damage on valve stem, retainer, and old locks. if everything checks out, definitely replace rockers with a stronger set. then try try again... i looked up the specs and there isnt anything too crazy about those springs, unfortunately i think darkman might be right, it really does sound like ptv contact. good luck man!
if you are lucky enough to not have ptv contact, check for damage on valve stem, retainer, and old locks. if everything checks out, definitely replace rockers with a stronger set. then try try again... i looked up the specs and there isnt anything too crazy about those springs, unfortunately i think darkman might be right, it really does sound like ptv contact. good luck man!
Thread Starter
Teching In
Joined: Feb 2014
Posts: 35
Likes: 0
From: Savannah,ga
Yea I used GM replacement head gaskets,and the heads are totally stock.The car was bone stock when I bought it.I did not degree the cam,but did install it dot to dot when I put the new timing set in.
Given that Texas Speed indicates that even a different head gasket can trigger the PTV issue, the margin for error is small. I would check the PTV clearance and would want to look at the top of the piston on the cylinder with the broken rocker either by pulling the head or using one of those mini-cams through the spark plug hole.
PTV issue would be intake or exh, not both. 11 of 16 is a clue.
When you get that rocker and spring off, get a photo of the guide and valve stem seal.
First busted stock rocker I've seen here. Maybe the retainer to guide clearance is all wrong. Or the spring went into complete coil bind for some reason.
Who put the heads together?
Ron
When you get that rocker and spring off, get a photo of the guide and valve stem seal.
First busted stock rocker I've seen here. Maybe the retainer to guide clearance is all wrong. Or the spring went into complete coil bind for some reason.
Who put the heads together?
Ron