re-torque on stock head bolts? - Page 2

cummins freak · 02-10-2007, 12:53 AM

Quote:

Originally Posted by zstroken

You can retorque them. We are pushing 55psi through a24V and ran my12 for half of a pulling season at 55psi with 18 degrees timing. We torqued them to 120 ish cold if I remember right. Don't expect this to last forever, just to get you by.

did you just put a TQ wrench on there and go to 120 or did ya back them out a little and add lube then go to 120 thanks

also i dont plan on running anything over 40-45 psi till i get head studs anyways so

__________________
1997, 2500 CTD. 4x4 LWB, ext cab, MODS-#100 plate, JL Machine 5x0.016 Injectors, 3kgsk, timing at 16*, Dave G. trans, , HTT killer B II 64/14, Custom DV's from weston!!! Mods soon to be- traction bars,head studs, marine gasket.

zstroken · 02-10-2007, 12:59 AM

45 psi with the stock charger might be an issue. Just torque them down. If your only running 40 psi with the killer B I probably wouldn't touch them.

__________________
B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

cummins freak · 02-10-2007, 03:29 AM

no oi was talking with the killer b2 at those pressures i dont run the stock over about 38 and try not to let it get over 35

__________________
1997, 2500 CTD. 4x4 LWB, ext cab, MODS-#100 plate, JL Machine 5x0.016 Injectors, 3kgsk, timing at 16*, Dave G. trans, , HTT killer B II 64/14, Custom DV's from weston!!! Mods soon to be- traction bars,head studs, marine gasket.

DieselDood · 02-10-2007, 10:41 AM

Here is my headgasket with studs.

I've got the head bolt I tried to retorque. You tell me they can be retorqued? I don't believe it.

When I go to work on tuesday I'll grab it and get you a picture. If your lucky, you've been wrenching long enough like I have and knew something was wrong and stop before it breaks. If not...you get to pull the head and start drilling. And I hope you get it right. Drilling and tapping a block isn't fun.

JP

zstroken · 02-10-2007, 11:23 AM

I have done it on two trucks. This was recommended per haisleys. If you have one that doesn't feel right, not torqueing up right, pull it and replace it.

__________________
B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

DieselDood · 02-10-2007, 04:52 PM

I don't know what to tell you, other than the fact that the bolts I streached were BRAND NEW...from Cummins. They are a Torque to Yield design, they aren't designed for a retorque. That's just the way they work. I don't trust them. IF you want to try it, go ahead. I'll put studs in before I try that mess again. Burn me once shame on you, burn me twice shame on me.

I'll get you a picture of it on Tuesday when I go into work.

Wanna see the stud that I streached? I've done that too!

cummins freak · 02-10-2007, 05:00 PM

yeah he has i've seen it , the streched head stud, in person so i'm taking jp's advice and not messing with a retorque not worth the possible migraine.

yeah i forgot you streched a head stud josh

__________________
1997, 2500 CTD. 4x4 LWB, ext cab, MODS-#100 plate, JL Machine 5x0.016 Injectors, 3kgsk, timing at 16*, Dave G. trans, , HTT killer B II 64/14, Custom DV's from weston!!! Mods soon to be- traction bars,head studs, marine gasket.

zstroken · 02-10-2007, 05:10 PM

Like I said it is just a buy time method. I wouldn't replace a head gasket to do this. But if the truck is together currently and your wanting to go more then go for it. I have done it personally with no issues. Have actually talked to a few guys that were doing this before head studs were even available. Head studs are a better route. Is your torque wrench correct?? Just curious you don't hear of too many stud failures. Trying to look at all options. As far as the head studs not designed for a retorque. They can be retorqued there is a length spec for the stud. If it is longer than that spec it has stretched. Also these engines weren't designed to run 600HP either. LOL

Studs are a better option no questions about it. Retorqueing the head is an option though. Call Haisleys and talk to them about it. Last year Terry Coppess was still running the stock head bolts and he as pushing 60PSI thru his motor. Patty told me he checks his head bolts religiously and if one feels soft he just replaces it.

__________________
B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

Don Wagner · 02-12-2007, 01:22 AM

I have retorqued the factory headbolts on 4 trucks, back off the tension and then 125lb/ft. I have yet to have a failure, but as zstroken stated you are just buying your time. These stock retorqued headbolts have held over 20* static timing and as much as 57psi.

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02-10-2007, 12:59 AM	#14 (permalink)
zstroken Diesel Freak Join Date: Jul 2006 Posts: 958 Thanks: 0 Thanked 2 Times in 1 Post zstroken's Truck Pics	45 psi with the stock charger might be an issue. Just torque them down. If your only running 40 psi with the killer B I probably wouldn't touch them. __________________ B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

02-10-2007, 03:29 AM	#15 (permalink)
cummins freak Diesel Freak Join Date: Jan 2007 Location: Bismarck, ND Posts: 678 Thanks: 0 Thanked 1 Time in 1 Post cummins freak's Truck Pics	no oi was talking with the killer b2 at those pressures i dont run the stock over about 38 and try not to let it get over 35 __________________ 1997, 2500 CTD. 4x4 LWB, ext cab, MODS-#100 plate, JL Machine 5x0.016 Injectors, 3kgsk, timing at 16*, Dave G. trans, , HTT killer B II 64/14, Custom DV's from weston!!! Mods soon to be- traction bars,head studs, marine gasket.

02-10-2007, 10:41 AM	#16 (permalink)
DieselDood Diesel Head Join Date: Jan 2006 Location: RAMsey MN Posts: 1,054 Thanks: 0 Thanked 2 Times in 1 Post DieselDood's Truck Pics	Here is my headgasket with studs. I've got the head bolt I tried to retorque. You tell me they can be retorqued? I don't believe it. When I go to work on tuesday I'll grab it and get you a picture. If your lucky, you've been wrenching long enough like I have and knew something was wrong and stop before it breaks. If not...you get to pull the head and start drilling. And I hope you get it right. Drilling and tapping a block isn't fun. JP

02-10-2007, 11:23 AM	#17 (permalink)
zstroken Diesel Freak Join Date: Jul 2006 Posts: 958 Thanks: 0 Thanked 2 Times in 1 Post zstroken's Truck Pics	I have done it on two trucks. This was recommended per haisleys. If you have one that doesn't feel right, not torqueing up right, pull it and replace it. __________________ B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

02-10-2007, 04:52 PM	#18 (permalink)
DieselDood Diesel Head Join Date: Jan 2006 Location: RAMsey MN Posts: 1,054 Thanks: 0 Thanked 2 Times in 1 Post DieselDood's Truck Pics	I don't know what to tell you, other than the fact that the bolts I streached were BRAND NEW...from Cummins. They are a Torque to Yield design, they aren't designed for a retorque. That's just the way they work. I don't trust them. IF you want to try it, go ahead. I'll put studs in before I try that mess again. Burn me once shame on you, burn me twice shame on me. I'll get you a picture of it on Tuesday when I go into work. Wanna see the stud that I streached? I've done that too!

02-10-2007, 05:00 PM	#19 (permalink)
cummins freak Diesel Freak Join Date: Jan 2007 Location: Bismarck, ND Posts: 678 Thanks: 0 Thanked 1 Time in 1 Post cummins freak's Truck Pics	yeah he has i've seen it , the streched head stud, in person so i'm taking jp's advice and not messing with a retorque not worth the possible migraine. yeah i forgot you streched a head stud josh __________________ 1997, 2500 CTD. 4x4 LWB, ext cab, MODS-#100 plate, JL Machine 5x0.016 Injectors, 3kgsk, timing at 16*, Dave G. trans, , HTT killer B II 64/14, Custom DV's from weston!!! Mods soon to be- traction bars,head studs, marine gasket.

02-10-2007, 05:10 PM	#20 (permalink)
zstroken Diesel Freak Join Date: Jul 2006 Posts: 958 Thanks: 0 Thanked 2 Times in 1 Post zstroken's Truck Pics	Like I said it is just a buy time method. I wouldn't replace a head gasket to do this. But if the truck is together currently and your wanting to go more then go for it. I have done it personally with no issues. Have actually talked to a few guys that were doing this before head studs were even available. Head studs are a better route. Is your torque wrench correct?? Just curious you don't hear of too many stud failures. Trying to look at all options. As far as the head studs not designed for a retorque. They can be retorqued there is a length spec for the stud. If it is longer than that spec it has stretched. Also these engines weren't designed to run 600HP either. LOL Studs are a better option no questions about it. Retorqueing the head is an option though. Call Haisleys and talk to them about it. Last year Terry Coppess was still running the stock head bolts and he as pushing 60PSI thru his motor. Patty told me he checks his head bolts religiously and if one feels soft he just replaces it. __________________ B&B performance: Industrial Injection, HTT, EDGE, Bully Dog, BD, South Bend Clutches

02-12-2007, 01:22 AM	#21 (permalink)
Don Wagner Banned Join Date: Jan 2007 Location: Not Quite Canadia Posts: 539 Thanks: 0 Thanked 7 Times in 4 Posts Don Wagner's Truck Pics	I have retorqued the factory headbolts on 4 trucks, back off the tension and then 125lb/ft. I have yet to have a failure, but as zstroken stated you are just buying your time. These stock retorqued headbolts have held over 20* static timing and as much as 57psi.