Torqueing of Rocker bolts....
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Torqueing of Rocker bolts.... I was in the process of torqueing the first set of bolts for the rockers(Yella Terra 1.7) and it appears the torque wrench took a **** as it did not click at 22 ft lbs. Possibly over tightened the bolt. Anything to worry about? Should I back it out and re torque it with the new torque wrench?
Thanks.
Ryan
Thanks.
Ryan
TECH Resident
Joined: Nov 2002
Posts: 857
Likes: 0
From: Orlando
There may be something to worry about if the bolt has been stretched with the overtightening. Back it out very, very gingerly and make sure there's nothing else awry and reinstall a new one if you can get one. The first one may have experienced some strain that won't be forgiving for long. Try to take it easy so you don't snap it off in the head. I think you'll be fine but just use caution.
TECH Apprentice
Joined: Jan 2002
Posts: 320
Likes: 5
From: Nottingham, Notts, England, UK
Can you rerverse the wrench setting to see what torque you actually used when undoing it? I agree with the above, if your worried then change it as a precaution. Also, I'd check the threads in the head are ok, sounds like they will be fine but take a look anyway.
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Thanks for the inputs guys. I backed it out and reinstalled it but it would not go to 22 ft lbs of torque. I could not be without the car so I finished the install with it and started the car and it is running fine, but I will get a new bolt and redo that rocker bolt. The one good thing is that the car will be sitting for the next 2 weeks since I will be on vacation. If I have to rethread the bolt hole, is that possible? The whole head would not be scrap if the threads in the hole are stretched would it?
Thanks again for the info.
Ryan
Thanks again for the info.
Ryan
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
OK, after running the car longer, it sounds like there is a problem. I am hearing a loud clanking from under the valve cover where I had the problem with the rocker bolt. I am going to pull it apart after it cools down and take a look.
If it is jacked, what will be my avenues of resolution? Please tell me there is an easy and inexpensive resolution to this.
Thanks a bunch.
Ryan
If it is jacked, what will be my avenues of resolution? Please tell me there is an easy and inexpensive resolution to this.
Thanks a bunch.
Ryan
Trending Topics
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Help, I am positive I did not cross thread it as the screw went into its place by hand just fine, but as I stated above, the torque wrench was not working and I over torqued the screw/bolt. So, as seen in the picture I appear to have stripped out the threads in the head where I bolt down the rocker. I need some help here folks, please give me a hand. I need an easy and inexpensive solution to this problem. Thanks in advance.
Ryan
The silver stuff in the one bolt is the threads from inside the head as they are also missing per my inspection there. There are threads, but deeper inside the hole.
Ryan
The silver stuff in the one bolt is the threads from inside the head as they are also missing per my inspection there. There are threads, but deeper inside the hole.
Last edited by Ryan98T/A; Dec 29, 2003 at 12:14 AM.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Is this Helicoil install really that difficult to do? I am pretty competent, the only reason this happened was because the damn torque wrench was not working, all the other rockers went on with no problem.
And I do not necessarily have to take off the head right? The damaged threads are in the #2 cylinder rocker mount, and the forward most mounting hole as well, so access is pretty easy there.
I can follow instructions pretty well, so is this something I can do?
Thanks again for the assistance.
Ryan
And I do not necessarily have to take off the head right? The damaged threads are in the #2 cylinder rocker mount, and the forward most mounting hole as well, so access is pretty easy there.
I can follow instructions pretty well, so is this something I can do?
Thanks again for the assistance.
Ryan
Helicoil requires you to drill the out the threads, then tap the hole with threads, then thread in the helicoil, so its not all the easy so you better be careful , probably should have someone do it that has done it before
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Thanks again for the info people. I appreciate it. I have a friend that has done some before so we will tackle it when I get back from vacation.
Everywhere I have read, they recommend the stock 22 lb ft.
Thanks all.
Ryan
Everywhere I have read, they recommend the stock 22 lb ft.
Thanks all.
Ryan
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Originally Posted by Jabroni
Address it soon because you'll be looking at f-ing up a lifter if the preload is that much off. Then you will have to pull the head.
Let me know what you meant or if I read what you wrote wrong. Thanks.
Ryan
Your arm has 3 built-in torque wrenches. You should always use them while using the one you bought just in case it fails as yours may have done. Your wrist is calibrated in in./lbs., elbow in ft./lbs. and your shoulder is for the crank pulley bolt. If your built in torque wrench ever reaches its' limit you know your mechanical torque wrench has already failed and a little lite in your brain should have come "ON" by then. Apparently someone unscrewed your lite bulb. Go out and buy a new lite bulb, screw it in and you should be OK.
Thread Starter
Launching!
Joined: Nov 2003
Posts: 285
Likes: 0
From: Mesa Arizona
Originally Posted by eallanboggs
Your arm has 3 built-in torque wrenches. You should always use them while using the one you bought just in case it fails as yours may have done. Your wrist is calibrated in in./lbs., elbow in ft./lbs. and your shoulder is for the crank pulley bolt. If your built in torque wrench ever reaches its' limit you know your mechanical torque wrench has already failed and a little lite in your brain should have come "ON" by then. Apparently someone unscrewed your lite bulb. Go out and buy a new lite bulb, screw it in and you should be OK.
And you never make mistakes right.
If you can not help someone out with a constructive comment, just keep your mouth shut.