Crap!!!! Broken a freakin head bolt!!!!!!
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Crap!!!! Broken a freakin head bolt!!!!!!
I knew things were going to smooth. I was torquing the heads down and snaped an ARP head bolt. From what I found on Summits site they don't just sell individual ones. What can I do for a replacement?
Not sure how or why it snapped. I was using a "click" torque wrench and made it to 65ftlbs before it snapped. I installed the other head with a spring pointer torque wrench just in case the "click" style was off and that was the cause. The spring pointer style went fine all the way to the required 75ftlbs.
BR
Not sure how or why it snapped. I was using a "click" torque wrench and made it to 65ftlbs before it snapped. I installed the other head with a spring pointer torque wrench just in case the "click" style was off and that was the cause. The spring pointer style went fine all the way to the required 75ftlbs.
BR
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
Jeebus you broke an ARP? You must be strong like me. I split TWO impact sockets once trying to get a crank bolt out of an '87 Toyota truck. Using a standard length 1/2" drive ratchet and a Craftsman and a Great Neck impact socket...I managed to split them both. I busted the fuse box when the sockets split and my elbows went crashing backwards. Ouch.
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Racer
Joined: Feb 2007
Posts: 307
Likes: 0
From: liberty mo
Jeebus you broke an ARP? You must be strong like me. I split TWO impact sockets once trying to get a crank bolt out of an '87 Toyota truck. Using a standard length 1/2" drive ratchet and a Craftsman and a Great Neck impact socket...I managed to split them both. I busted the fuse box when the sockets split and my elbows went crashing backwards. Ouch.
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
I feel your pain. Agree that ARP will take probably care of you. Sounds like it may be time to check that torque wrench. A good ole beam type torque wrench isn't sexy, but she'll do you right for a lifetime.
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Jeebus you broke an ARP? You must be strong like me. I split TWO impact sockets once trying to get a crank bolt out of an '87 Toyota truck. Using a standard length 1/2" drive ratchet and a Craftsman and a Great Neck impact socket...I managed to split them both. I busted the fuse box when the sockets split and my elbows went crashing backwards. Ouch.
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Yep, call ARP, they probably won't even hesitate to send you a new one. Did you get the broken one out?
Yeah it came out easy. I sprayed the threaded holes in the block with liquid wrench before installing the bolts. The bolt left a small peice just above the deck when it broke so I was able to get some needle nose pliers on it and roll it out. Whew!!! I just knew I was going to have to drill it out....
Thanks I am goingt o call them this morning. I figure since they are in CA and I am in SC there wont be any point in calling till around 10-11 est.
Thanks guys! If this is all that happens during this build I will count myself lucky!!
Wade
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Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
Click wrenches need to be used "correctly". I've seen a lot of assembly line folks use them and they just give it a big yank. It will click as long as the 'yank' is above the required torque. You have to ease into the correct torque with a click wrench and stop just as soon as you hear/feel the click. That's why I don't like them.
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Click wrenches need to be used "correctly". I've seen a lot of assembly line folks use them and they just give it a big yank. It will click as long as the 'yank' is above the required torque. You have to ease into the correct torque with a click wrench and stop just as soon as you hear/feel the click. That's why I don't like them.
ARP should be open now. Gonna call them.Wade
Melting Slicks
Joined: Jul 2001
Posts: 2,609
Likes: 12
From: Massapequa Park NY
Yeah it came out easy. I sprayed the threaded holes in the block with liquid wrench before installing the bolts. The bolt left a small peice just above the deck when it broke so I was able to get some needle nose pliers on it and roll it out. Whew!!! I just knew I was going to have to drill it out....
Glad it came out easy for you, are you only using liquid wrench on the block? You should be lubing the the threads with oil or ARP's thread lube or sealer if the holes are open to the water jacket.
Jim
Glad it came out easy for you, are you only using liquid wrench on the block? You should be lubing the the threads with oil or ARP's thread lube or sealer if the holes are open to the water jacket.
Jim
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Wade
Pro
Joined: Apr 2006
Posts: 625
Likes: 49
From: Southern California
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
You mentioned that the one bolt didn't "feel" the same as the others. Could it be that that bolt [the one that broke] actually bottomed-out in the threads before the bolt-head seated with the cylinder head? If it did, that could be the reason for the breakage. When you take the head off, check to see if you have chips, etc. at the bottom of that threaded hole. You may also want to put one of the bolts in (without the cylinder head) to max depth by hand, then measure how much bolt shank you have showing. Compare that to the thickness of the cylinder head at that bolt hole position. If the two dimensions are close to the same, you need to chase the threads a little deeper (if you can) or go to a slightly shorter bolt. If the bolt head isn't seated when you torque the bolt up, the bolt tension will not be only in the axial direction and you might break the bolt head off.
Burning Brakes
Joined: Apr 2007
Posts: 1,028
Likes: 1
From: SOUTH ELGIN IL
If their computers are down and they can't move forward until then probably be Monday... I'd try them again before COB today anyway.
Wish we made those kinds of bolts still but haven't made anything like it in some time. I'd send you one if I had it. Good luck.
Wish we made those kinds of bolts still but haven't made anything like it in some time. I'd send you one if I had it. Good luck.
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
Thanks guys! ARP QC guy was very helpfull in sending me a replacement bolt. He asked how the others felt when they went in and I said fine no problems. He said that it could have been just a weakened bolt but really could not say for sure. I really did not expect them to be able to. They sent me a replacement today. I have a real hard time just chunking the whole set because of one broken one. Once I removed the head and pulled the broken bolt out I reinstalled the head and used my bar style torque wrench and successfully installed the same head on the same side with no problems. Hopefully the bolt will be here by early next week.
Wade
Wade
Melting Slicks
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
Glad you got the broken bolt out! You must be chomping at the bit to get this engine running smooth!
OK! You've had more than your fair share of difficulties; wishing you clear sailing from here on in!
OK! You've had more than your fair share of difficulties; wishing you clear sailing from here on in!
Thread Starter
Safety Car
Joined: Oct 2000
Posts: 4,282
Likes: 172
From: Lake Wylie, South Carolina
I really hope I have paid my dues now and I will actually get to enjoy the car instead of just pulling it apart. I will say that this go around I have learned a ton about cam geometry and using diagnostic tools. I wish I could have learned all this a different way but at least now I know. Once the bolt gets here the motor will be back together and ready to go in in a matter of hours. Before it goes in I am going to install the TKO600. Hopefully that will go smooth
Have a good night!
Wade
Drifting
Joined: Apr 2002
Posts: 1,720
Likes: 19
From: Manhattan Beach Ca
If any did yield you may lose the clamp up ability of that bolt under stress, so if you notice later any become loose then replace all of them. Hopefully you'll be OK, just keep an eye out.