Head stud question - Dodge Diesel

straight_six · 05-21-2008, 10:06 PM

Anyone know the tensile strength of stock head studs?? And also what are the stock studs torqued too??? tia

homewrecker · 05-21-2008, 10:29 PM

I don't know the tensile strength of stock head bolts but torque is 77ft lbs + an additional 90*.

straight_six · 05-21-2008, 10:56 PM

so what do you think would happen if i tryed to torque my stock head bolts to 130lbs?? was talkin to a machinest today and he thought it was joke what they charge for head studs

tatkins85 · 05-21-2008, 11:10 PM

there only 350. if i were you and they are off already i would buy head studs. not to mad, and you alreayd have the stock once out.

straight_six · 05-21-2008, 11:29 PM

Quote:

Originally Posted by tatkins85

there only 350. if i were you and they are off already i would buy head studs. not to mad, and you alreayd have the stock once out.

i havent torn anything apart yet... just got twins put on and just tryin to figure out all this junk...

tcr · 05-22-2008, 07:49 AM

My head bolts were torqued, then re-torqued a couple days later to 110 ft lbs(o'ringed head). No issues.

jmccart · 05-22-2008, 10:02 AM

Quote:

Originally Posted by tcr

My head bolts were torqued, then re-torqued a couple days later to 110 ft lbs(o'ringed head). No issues.

How much boost ya' running on them stockers?

tcr · 05-22-2008, 10:21 AM

60psi max.....

jmccart · 05-22-2008, 10:52 AM

Sweet news.

XXLTEXAN · 05-22-2008, 07:39 PM

60 PSI!! On a stocker??

White97GTVert · 05-22-2008, 08:09 PM

Quote:

Originally Posted by XXLTEXAN

60 PSI!! On a stocker??

His sig says HTB2 62/14....

BossHogg · 05-22-2008, 08:16 PM

Ya isnt 60 pushing it?

straight_six · 05-22-2008, 11:40 PM

i just dont get why i need to by new studs if i can torque my stock studs down more??

White97GTVert · 05-23-2008, 12:46 AM

Quote:

Originally Posted by straight_six

i just dont get why i need to by new studs if i can torque my stock studs down more??

Because they were designed to be stretched one time, and one time only. When they get torqued to 77 ft lbs, then a 90* more that is the final set point and streches the bolt out a little bit. Once that has happened they shouldn't be torqued again.

Thats the way it is in the gassers I've always worked on anyways. Maybe these are different but I think its just cheap insurance.

What is the actual torque on those bolts once they have been turned an additional 90* past 77 ft lbs... Since I've never tried retorquing the stockers I have no idea. I imagine its somewhere in the neighborhood of 100 ft lbs going an extra 90. Guess of course.

tcr · 05-23-2008, 04:00 AM

Quote:

Originally Posted by BossHogg

Ya isnt 60 pushing it?

Not w/ an o-ringed head. I'm probably good to 70-80psi I would hope. I am getting out of my turbo's efficiency range though.

05-21-2008, 10:29 PM	#2
homewrecker Registered User Join Date: Nov 2006 Location: N.C. Posts: 1,629 My Photo Gallery My Classified Ads	I don't know the tensile strength of stock head bolts but torque is 77ft lbs + an additional 90*. __________________ 05 3500 QC 4x4 dually NV5600 north of 600hp 2 01 3500 H.O. 4x4's w/flatbeds slightly modded

05-21-2008, 11:10 PM	#4
tatkins85 Registered User Join Date: Oct 2007 Location: California Posts: 271 My Photo Gallery My Classified Ads	there only 350. if i were you and they are off already i would buy head studs. not to mad, and you alreayd have the stock once out. __________________ 06 quad cab cummins, Manifold's, Air Intake, Big Turbo, big nozzles, Big cp3, Single Stack, Smarty, Nitrous, Gauges, Studs, Springs, Big Fass, Built Trans

05-22-2008, 07:49 AM	#6
tcr Registered User Join Date: Sep 2003 Location: Austin, TX Posts: 3,188 My Photo Gallery My Classified Ads	My head bolts were torqued, then re-torqued a couple days later to 110 ft lbs(o'ringed head). No issues. __________________ Tom 2012 CCSB 2500 HO 4X4 Outdoorsman Ed, Modded to LAST! (Sold and Missed!)2003 QCSB 305/555 4X4,SUNCOAST 48RE,SMARTY(2) BETAs & TNTR PoD,/QUAD ADRENALINE/PULSE,DDP 90s,HTT,AFE STG2,ATS MANIFOLD,'06 P/P HEAD O'RINGED,STUDS,HAMILTON SPRINGS,WALBRO W/FIL & BL,SS 5" EX,WICKED CP3 w/II DUAL FEED,HTT Intercooler,NITTO 35s on 20s, 2007 5.9L QCSB 6spd, 2WD, SMARTY, AFE STG 2, SB DD 2010 FLHX Streetglide 2007 Kubota 4WD 2006 Yamaha Grizzly 660 Hunter's ED. 2009 Ram Crew Cab 1500 Laramie HEMI

05-22-2008, 07:39 PM	#10
XXLTEXAN Registered User Join Date: Oct 2005 Location: "I don't live in Dallas, I live in TEXAS!" Posts: 386 My Photo Gallery My Classified Ads	60 PSI!! On a stocker?? __________________ 07' 5.9,4x4,Auto,3:73,Quad Cab,Laramie Smarty Jr.,AFE Stage 2 w/PG7 and SR MIA,KORE Recon,Toyo 35" MT, LS SSSSS,LS Drag Bars,LS Zero Deflection Bushing w/High PSI Hardware,Ranch Hand Bull Nose w/ PIAA Fogs,Ranch Hand Rear w/Reverse LED's,Cat Stolen!,High Flow Muffler,De-badged,Spray In,Brake Controller (Stolen) 05' 5.9,4x4,auto,HID's, Ranch Hands,4" exhaust,Kore Chase,Smarty Sr.,35",debadged,71k (Sold) 01' 5.9,too many mods,191k+ (Sold) 96' 320k+ SAC Member #230 NRA Life Member

05-22-2008, 08:16 PM	#12
BossHogg Registered User Join Date: Aug 2005 Location: Dallas TX Posts: 1,008 My Photo Gallery My Classified Ads	Ya isnt 60 pushing it? __________________ 2004 Dodge 2500 4x4 SBQC de-badged with: Fully built Goerend, Magtech DDP, 3:73 gears, F1 Springs, Helix 2, Flux 1.8's, ARP Studs, SMARTY beta 4.2/Quad X2 race, Quadzilla intake w/ AFE Dry filter, DTT intake horn, grid delete, GDP 392, HTT 62/71/13SS, front Farm Boss bumper, rear mavrick bumper, 35x12.5 Cooper STT's on black H2's , KORE HD lvl kit & mini pacs, Bilstien 5100's, LS drag bars, LS SSSSS, LS Lazar Lites, Optix 3-pillar, and MBRP 4" exhaust! 484.7rwhp! 5/17/08 2004 KTM 300

05-21-2008, 10:56 PM	#3
straight_six Registered User Join Date: Mar 2007 Location: Rupert, Idaho Posts: 116 My Photo Gallery My Classified Ads	so what do you think would happen if i tryed to torque my stock head bolts to 130lbs?? was talkin to a machinest today and he thought it was joke what they charge for head studs

05-22-2008, 10:21 AM	#8
tcr Registered User Join Date: Sep 2003 Location: Austin, TX Posts: 3,188 My Photo Gallery My Classified Ads	60psi max.....

05-22-2008, 10:52 AM	#9
jmccart Registered User Join Date: Oct 2006 Location: SoCal Posts: 1,998 My Photo Gallery My Classified Ads	Sweet news.

05-22-2008, 11:40 PM	#13
straight_six Registered User Join Date: Mar 2007 Location: Rupert, Idaho Posts: 116 My Photo Gallery My Classified Ads	i just dont get why i need to by new studs if i can torque my stock studs down more??

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