arp 1x1 method
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From: killafornia
arp 1x1 method
I am going to install arp headstuds with the 1x1 method. my question is when I install the first stud do i torque it down to 30 then install the other studs at 30 then 60 then 80, or do I torque the first one down to 30, 60, 80 then install the second stud and torque it 30 60 80 all indvidually. I know usually you do 30 60 80 on all when you remove the head, but im not sure the process for the 1x1 method
I would go all the way to 80 on each stud as i went. since you are doing singles, you dont really have to do it in steps. the steps are only when youre doing a whole head worth to keep it evenly preloaded. It wont hurt to do it in steps though.
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From: killafornia
I read another thread that says you should install 1 stud torque it to 30 then loosen it, then torque it to 60 loosen it, then torque it to 80, then move on to the other studs using that process...anyone whos done the 1x1 method care to chime in
analysis paralysis. just go do it.
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I did 1x1 method. Replaced them in the order of the torque sequence in the manual. Torqued to 70ftlbs on install, then did a final torque to 80ftlbs.
Last edited by letsgetthisdone; Mar 24, 2017 at 12:37 PM.
so you took one out, put one in and torqued it to 70ftlb then 90ftlb or you torqued it to 70ftlb and moved to the next then at the end redo all of them to 90ftlb? how long has it lasted and how much boost you running?
Torqued to 70, moved on to next. Final torque to 90 once all were switched. I did this back in February 2014, the car had about 17k miles on it, the next day my car was tuned on the stock turbo on E85 making 400whp/400wtq. It has been making the numbers in my sig since about June 2015/35k miles. Car now has 53k miles. Boost is currently 32psi tapering 28psi.
One thing to think about is that boost doesn't effect cylinder pressure nearly as much as ignition timing.
Also worth noting, Abacus made 600whp on his completely stock Evo 9 engine (cams, head bolts, bottom end, etc) on the same turbo I have. Good tuning goes a long way, and head studs aren't exactly necessary.
One thing to think about is that boost doesn't effect cylinder pressure nearly as much as ignition timing.
Also worth noting, Abacus made 600whp on his completely stock Evo 9 engine (cams, head bolts, bottom end, etc) on the same turbo I have. Good tuning goes a long way, and head studs aren't exactly necessary.
Torqued to 70, moved on to next. Final torque to 90 once all were switched. I did this back in February 2014, the car had about 17k miles on it, the next day my car was tuned on the stock turbo on E85 making 400whp/400wtq. It has been making the numbers in my sig since about June 2015/35k miles. Car now has 53k miles. Boost is currently 32psi tapering 28psi.
One thing to think about is that boost doesn't effect cylinder pressure nearly as much as ignition timing.
Also worth noting, Abacus made 600whp on his completely stock Evo 9 engine (cams, head bolts, bottom end, etc) on the same turbo I have. Good tuning goes a long way, and head studs aren't exactly necessary.
One thing to think about is that boost doesn't effect cylinder pressure nearly as much as ignition timing.
Also worth noting, Abacus made 600whp on his completely stock Evo 9 engine (cams, head bolts, bottom end, etc) on the same turbo I have. Good tuning goes a long way, and head studs aren't exactly necessary.
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From: killafornia
I did it let the ran the car for 30 mins let it cool overnight re torqued it. I drove the car for 30 miles the re torqued it. I have not had any issue and car runs perfect I have just been babying it till I hit 300 mils then ima check the torque one last time and then leave it.