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#1
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Crower Rod Bolt Torque Specs
Does anyone have the torque specs for the stock length/dimension Crower Sportsman Rods? They have the cap screw type bolts.
Thanks |
#2
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More importantly first is how many times would this be that they where torqued up?
If this this time would make 5 then they should get replaced if you do not want to take chances! The sportsman with 3:8” bolts go to 47 to 50, and the 7/16” cap screw go to 70.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
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I believe this will be the second time that they have been torqued up. Thank you for that information.
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#4
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Well if your reusing them that would be 3 times.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#5
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Sounds like the rod bolts are original. If so, they should be ARP bolts with the Crower number stamped into the head. IIRC mine are 90820. Go the Crower website and there is a link for Rod Torque Specifications which lists the bolt numbers used, recommended lubricant, and the required torque value.
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#6
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Thanks for the replies everyone. Mine seem to have A1 006077 87 stamped on the head of the cap screw. That isn't cross referencing to anything that I can find.
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#7
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My Crower Sportsman 6.8 Pontiac (SP93421B) rod tag says 75 ft. lbs., .005" - .007" stretch, bolt part number 90829 and lube 90894. Tag says made in 2014. Head of the capscrew is ground and laser etched, not stamped.
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#8
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Quote:
The torque specs are that same as posted by nobuddy, .005”-007” stretch, 75 ft. lbs. torque, and lube 90894 which is ARP Ultra Torque Lubricant. Your stock rods should have the 7/16” bolts so you should be good with the specs listed. |
#9
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I've never even heard of a Crower rod for a Pontiac that isn't 7/16" capscrew. Seems the only question should be if regular 8740 or a higher alloy.
Barry |
#10
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The only way to for this to be done 100% correct regardless of what the torque number is to go by the stretch method.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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