head bolt torque question?

[charger72]

i was looking in my book for head bolt specs and one book says 50lbs and int the back it says 95lbs. in 3 other books it just says 95lbs, should i tighten them to that? the motor is a 77 318.

[Plumcrazy]

Following the proper sequence torque the bolts to 50 ft/lbs.  Then repeat the process  at 95 ft/lbs

[Chryco Psycho]

I agree , I generally torque them 3 times 65-85-95 with oil on the threads

[mikepmcs]

that's good info to know.  Always use new bolts right? 

CP, is the oil so they come out easy later on??  That's probably a dumb question, but I was just curious.

v/r
Mike

[firefighter3931]

  Always use new bolts right? 

CP, is the oil so they come out easy later on??  That's probably a dumb question, but I was just curious.

v/r
Mike

Mike, Those aren't stupid questions at all...

The factory bolts can be reused....no problem there. 

The oil is needed to make sure that the proper TQ value is applied to the fastner. Putting them in dry will leave you on the low side of what you're shooting for.

The idea is to eliminate as much friction as possible from the threads. The oil also protects the threads on the headbolt & block.


Ron

[mikepmcs]

Thanks Ron, that makes alot of sense actually considering it is the head.  I learn so much from this site!

v/r
Mike

[TylerCharger69]

For the record....Factory bolts can be reused....UNLESS   you have aluminum heads......in which case  the bolts need to be replaced each time the head is removed.   But as far as cast heads?....use the old ones!!!

[Challenger340]

It's the old saying, use Oil for torque'ing "on threads and under heads"