Anyone know the torque and stretch specs of the ARP 2000 bolts that come with Eagle rods for the 4G63? I can't find the part number for them so unsure how much to stretch them by to get the correct preload.

 

38 to 40 foot pounds

 

^ double check with arp & be certain to use the correct lube for the torque reading, as using the moly lube under the head of the bolt will generate different values if you were to use just oil.

 

hope this helps for you buddy ...luckily i just did mine a few weeks ago and i still got the paper for the specs....so here goes:

Torque Specs:

BOLT........................................IDENTIFICATION.........TORQUE.........BOLT STRETCH

7/16" ARP 8740..........................7/16" bolt head.............63 ft. lbs.......... .0059"-.0063"

7/16" ARP 2000..........................7/16" bolt head.............75 ft. lbs.......... .0064"-.0068"

7/16" ARP L-19...........................1/2" bolt head...............79 ft. lbs.......... .0073"-.0077"

3/8" ARP 2000............................7/16" bolt head.............43 ft. lbs.......... .0055"-.0059"

5/16" ARP 2000..........................3/8" bolt head...............28 ft. lbs.......... .0048"-.0052"

5/16" ARP Custom Age 625........3/8" bolt head...............32 ft. lbs.......... .0062"-.0066"

**To accurately determine the life of a bolt, it is recommended that a log of the bolts original free-standing (Untorqued) length should be kept and recorded upon sebsequent teardowns for inspection. The free-standing length should be checked against its original length. If there is an increase of .001" or more, or if there is any permanent deformation or galling, the bolt should be replaced.

this was all straight off from the installation instructions paper that came with it

 

3/8" ARP 2000............................7/16" bolt head.............43 ft. lbs.......... .0055"-.0059"

Thanks! This must be it Going to tighten them down using the stretch method.

 

no problem

 

Yes 43ft-lbs with moly lube I believe.

And I just found those ARP 2000 bolts we were missing before I ordered you a new set Faisal. Just my luck. lol

 

Usually, there is a maximum recommended torque. I would guess in this case, 43 lbs is the max.

If you cannot achieve the specified stretch within the maximum torque range, the bolts are not applying the necessary clamping force and are probably junk.

 

good deal

 

it is 45 ftlbs with arp moly lube....