i cant seem to find how tight the torque deal has to be with the studs hrc sells for us? all i can remember is the higher the # the more it can handle higher boost. can anyone give me the number range? thanks Michael 99gs (broken) Motor being built now HRC Stage 2 8-Injector Setup Stage 3 process begins 2 months till im built. hehe 2GNT Member #32
#50848, "RE: Head Studs Torque specs?" In response to Reply # 0 Jun-20-03 02:25 PM by XtremeRS
Well for the ARP head studs, they recomend 65 ft lbs of torque. Then retightening after several heat cycles. I talked with them directly about this, because i know many guys on here have gone much higher in torque. They specificaly said not to go any higher, because we have a aluminum cyl head/steel block. So what i did, i went to 70 ft lbs, and never retorqued, so i figure the torque will be very close. Many guys have gone way over that, and never had an issue, so i dont know. My HG has been fine at 13 psi since the rebuild... Oh and be sure to work up to the final torque too. I think i started out at 25 ft lbs, then 45 ft lbs, then finished at 70 ft lbs.
13.5 @108 MPH-2.2 60ft(stupid FWD!) S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential fuel injection) My webpage: http://eclipsed4evr.home.comcast.net -1998 Mitsubishi Eclipse RS-T- "Toy" -1992 Plymouth Laser Turbo AWD(SOLD) -2000 Honda CR-V(daily)
#51090, "RE: Head Studs Torque specs?" In response to Reply # 3
when you guys torqued it to 70 or 80 for the head studs did you just use the arp 'special' lobeee? or did you use oil with those torque numbers? my engine builder said it matters in relation to what lobee or oil and the how much you torque it. thanks guys Michael 99gs (broken) Motor being built now HRC Stage 2 8-Injector Setup Fully Built by July 25,2003 hehe 2GNT Member #32
#51122, "RE: Head Studs Torque specs?" In response to Reply # 4
i too have the ARP head studs torqued to 80 foot pounds. i used the APR Moly Lube on EVERYTHING. that shit is awesome. when i torqued mine down, i went to 40 foot pounds, then 80, and did that 3 times for all of the bolts. haven't had any issues since.
#51128, "RE: Head Studs Torque specs?" In response to Reply # 1
On that note, I had my machinist tighten my ARP studs to 71 ft/lbs per the FAQ page. Last night, for shit and giggles, I attempted to confirm my head stud torque settings, and they wouldn't budge before the torque wrench clicked again at 70 ft/lbs.
Those ARP studs are in there TIGHT and haven't loosened from their original 70ft/lbs in over 1200 miles.
_____________________________________ Jason ESi-T
04' BMW 325Ci 91' Nissan 240SX 98' Eagle Talon ESi (sold)
#51129, "RE: Head Studs Torque specs?" In response to Reply # 6
I run 90ft/lbs.
ARP says that because they don't want to be responsible for you overtorqueing your head in the wrong order and warping it. If you use the correct, factory torquing order, you can run whatever amount you want.
______________________________ If a sentence found online has 35% misspellings or greater and includes at least two racially charged expletives, chances are it is a YouTube comment.
'95 Eclipse TurboGS (garage deco) '95 TSi AWD (restoring a survivor) '97 Talon ESi-T (poor impulse control) '99 Eclipse RS-T (daily beater) '13 Evo X (mostly stock) '17 Sienna (Middle Aged Dad Mobile)
#51134, "RE: Head Studs Torque specs?" In response to Reply # 7
thanks guys. ill tell my builder. my car should be up and running i hope within a few weeks. hehe Michael 99gs (broken) Motor being built now HRC Stage 2 8-Injector Setup Fully Built by July 25,2003 hehe 2GNT Member #32
Outside of Corona: "That sucks, peace out..." (jamie walks away)... "Sweeet, what we doin?" -Zac Tim's garage (prior to motor install): "Im gonna smoke real quick, that way if you fuck up I am already nicotined up" -Tim
#107635, "RE: Head Studs Torque specs?" In response to Reply # 10 Feb-21-10 11:06 PM by bagged420a
Yea, I am torquing in sequence. I just got a little worried if they should all be the same, because the bolts required different torque settings for the outside ones. Just making sure before I went and broke something haha. Thanks man
