ARP head stud question
06-14-2005, 11:58 PM
#1
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ARP head stud question OK, quick question on torque specs. I have heard 80ft/lbs and 90ft/lbs following factory torque sequence. So, I just want to make sure I torque them down correctly.
Thanks,
Matt
Thanks,
Matt
06-15-2005, 09:35 AM
#3
Taken from jMx's LS1 Howto.com:
Apply the moly lube that came with the ARP bolts to the threads, as well as under the head of the bolt and both sides of the washer. Only a light coating is needed. If you don't have the included moly lube, put some motor oil on the threads.
Torque all 15mm bolts to 30lbft in the torque sequence above.
OPTIONAL: Safety check! One one side of the motor install 2 pushrods (one exhaust, one intake), the rocker pedestal, and two rockers...then turn the motor over by hand two full turns. While this method wont be exact, if the engine didn't stop when you were turning it you most likely installed the cam correctly. If it felt like it stopped at one point and wouldn't go further, chances are a piston is hitting a valve and you need to disassemble things and go back to the dot to dot part, OR, your cam is huge and the piston to valve clearance is ZERO (it'd take a really big cam for this to happen)
Do a second pass at 50lbft, and finally a 3rd at 70lbft.
Finally install the 5 smaller ARP bolts and torque them to 22lbft.
Apply the moly lube that came with the ARP bolts to the threads, as well as under the head of the bolt and both sides of the washer. Only a light coating is needed. If you don't have the included moly lube, put some motor oil on the threads.
Torque all 15mm bolts to 30lbft in the torque sequence above.
OPTIONAL: Safety check! One one side of the motor install 2 pushrods (one exhaust, one intake), the rocker pedestal, and two rockers...then turn the motor over by hand two full turns. While this method wont be exact, if the engine didn't stop when you were turning it you most likely installed the cam correctly. If it felt like it stopped at one point and wouldn't go further, chances are a piston is hitting a valve and you need to disassemble things and go back to the dot to dot part, OR, your cam is huge and the piston to valve clearance is ZERO (it'd take a really big cam for this to happen)
Do a second pass at 50lbft, and finally a 3rd at 70lbft.
Finally install the 5 smaller ARP bolts and torque them to 22lbft.
06-15-2005, 09:59 AM
#4
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Originally Posted by CANNIBAL
Taken from jMx's LS1 Howto.com:
Apply the moly lube that came with the ARP bolts to the threads, as well as under the head of the bolt and both sides of the washer. Only a light coating is needed. If you don't have the included moly lube, put some motor oil on the threads.
Torque all 15mm bolts to 30lbft in the torque sequence above.
OPTIONAL: Safety check! One one side of the motor install 2 pushrods (one exhaust, one intake), the rocker pedestal, and two rockers...then turn the motor over by hand two full turns. While this method wont be exact, if the engine didn't stop when you were turning it you most likely installed the cam correctly. If it felt like it stopped at one point and wouldn't go further, chances are a piston is hitting a valve and you need to disassemble things and go back to the dot to dot part, OR, your cam is huge and the piston to valve clearance is ZERO (it'd take a really big cam for this to happen)
Do a second pass at 50lbft, and finally a 3rd at 70lbft.
Finally install the 5 smaller ARP bolts and torque them to 22lbft.
Apply the moly lube that came with the ARP bolts to the threads, as well as under the head of the bolt and both sides of the washer. Only a light coating is needed. If you don't have the included moly lube, put some motor oil on the threads.
Torque all 15mm bolts to 30lbft in the torque sequence above.
OPTIONAL: Safety check! One one side of the motor install 2 pushrods (one exhaust, one intake), the rocker pedestal, and two rockers...then turn the motor over by hand two full turns. While this method wont be exact, if the engine didn't stop when you were turning it you most likely installed the cam correctly. If it felt like it stopped at one point and wouldn't go further, chances are a piston is hitting a valve and you need to disassemble things and go back to the dot to dot part, OR, your cam is huge and the piston to valve clearance is ZERO (it'd take a really big cam for this to happen)
Do a second pass at 50lbft, and finally a 3rd at 70lbft.
Finally install the 5 smaller ARP bolts and torque them to 22lbft.
