torque specs?

[atesvn]

This may seem a little strange but should the Dart specs of 70 ft. lbs. be used, or the specs of 60 ft. lbs. w/thread sealer that ARP recommends with its 12 pt. headbolts? The heads are Alum. Pro 1's w/felpro MLS gaskets. The bolts are ARP's. Thanks, Atesvn

[BIG CHIEF]

Hello,

The spec. should be set at 70 ft Lbs with a small amount of 30 weight oil on the threads or the Moly Lube included in the kit. One other thing we do here that helps with more accurate readings is wire wheel the threaded area of the stud or bolt to remove the black coating on the stud or bolt before installation.

Thanks,

~M

[Awesome Bill]

here is what we have found to work the best and be most accurate. We never use oil, the heavy metal content for what this is being used for is insufficient to keep the 2 metals from locking up and clicking your torque wrench off. There is a huge difference between clamping load, stretch, and just clicking off the torque wrench. We use the ARP Moly lube along with the Manley Hi Pressure lube, mix in a little comp cams red lube and make a very thick paste. We torque the bolts 40-50-60-70. When we are done, we back off each bolt all the way and then in 1 smooth slow swipe, we let it click off @ 70. This preloads and stretches the bolt or stud the best way and most consistant. We do each bolt like this and it also burnishes the 2 surfaces and we have never had a head gasket problem. The trick is the last step. All the way from 0 to 70 while all the others are already @ 70. This keeps the head pretty flat and makes sure all bolts are doing their part. Hope this helps