Stock torque spec's.....the reason for the aftermarket bolts like ARP's is to help stop stretch not to use more torque on the bolts or nuts like some people think. So just use the factory spec's. :2thumbs:on these A beam rods i have in my 1070 motor there was rod bolt with name ARP 625+ what torque should i use on them? i use a digital torque wrench
thanks the bolts name is ARP-625 plusproper tq is VERY important. It is best to go by the bolt stretch listed. Use the lube they recomend for the bolts also. some bolts are stronger and have to be torqued to a high lb ft to achieve the proper stretch/preload. if they are not stretched/preloaded correctly the big end can be out of round and they can come loose because they are not tq'ed correctly. tq the 625 plus to stock tq specs and it may not be tqed enough and come loose.
I even tq them to the specs I am going to use and have my crank guy make sure they are round at the tq specs I use.
I would call carrilo to make sure what the tq spec is for that bolt. I have a sheet from a set of falicon knife rods that use a arp 625 plus bolt. it is speced at:
Bolt Torque: 40 to 42 foot pounds with ARP Grease.
Bolt Stretch: .0064 inches +/- .0002
Just as an example: falicon use to use arp 2000 bolts.
Bolt Torque 32 foot pounds
(Caution: use only common engine oil to lubricate the ARP 2000 bolts)
I agree. Measuring bolt stretch is the best way hands down but as stated a good torqued wrench will work. The extreme pressure grease should always be used!I would call carrillo just to make sure. if you use the proper lube on the bolts and your tq wrench is calibrated correctly it should be fine. if you have the proper lube and tq wrench calibrated it should produce the bolt stretch listed.
arp recomends to use their lube. they do say that if you do use grease instead of their lube to make sure it is a extreme presure molybendum based grease.
yes they are changed out i am not sure why but they are stronger and thats a good thing, falicon say they need to be torqued down to 40-42 ft.ibs with the arp lube so this is what i gonne do, foot pounds is the same as ft.ibs torque right?The title says Carrillo, but the message stated ARP. Carrillos never used ARPs.
If they are, in fact, Carrillos, someone has change out the bolts.
Contact ARP or Falicon about the torque spec on those bolts.
take it slow man i write wrong offcourse it is ft.lbsyou can get arp's lube from summit racing if you need to.
their is foot pounds and inch pounds. Definatly 40-42 foot pounds.
I don't know why you keep posting ft.ibs. it should be ft.lbs. (foot pounds) ibs keeps making me think inch pounds.