rod bolt torque on arp 8740?
#1
rod bolt torque on arp 8740?
The title pretty much somes it up need to know the rod bolt spec for arp 8740 bolts they have the 7/16 bolt heads and are 1.6" going into SCAT H Beams. Also do you have to use ARP moly or will the local store bought stuff work? Thanks
#3
Rods are SCAT H beams. They have been run before I had to tear down due to an oil pressure issue. Turns out the builder never bolted the oil pump pickup to the oil pump. It was bolted to one of the studs. Ended up eating the Main bearings, and rod bearings so I had the crank turned to +10 and now I have all the parts bearings included. Just not sure on the torque spec. I know its different than factory though.
#5
To answer the question they are the same bolts that came with the rods and have been in the LQ for about 20K miles before its oil pressure dropped and I pulled it. I just dont have the torque spec originally the spec would have come with the instructions in the box. I dont want to get it wrong when it goes back together. Guess I need to call SCAT and talk to a technician and see what they can dig up. Ill post up what I find.
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#9
Got in touch with SCAT the other day this is what I found out
SCAT H Beams with ARP 2000 => 50 ft lbs
SCAT H beams with ARP 8740 => 63 ft lbs
Also spoke with a mechanic at texas speed and got the torque specs for ARP main studs
Inner => 60 ft lbs
outer => 50 ft lbs
bolts out side of block => 20 ft lbs
Hope this helps someone in the future.
SCAT H Beams with ARP 2000 => 50 ft lbs
SCAT H beams with ARP 8740 => 63 ft lbs
Also spoke with a mechanic at texas speed and got the torque specs for ARP main studs
Inner => 60 ft lbs
outer => 50 ft lbs
bolts out side of block => 20 ft lbs
Hope this helps someone in the future.