Underdrive Pulley bolt ?s
03-23-2003, 02:46 AM
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Underdrive Pulley bolt ?s I just got done installing my U.D.pulley and I have a question. About how much torque is 120 degrees after 37 ftlbs? I don't have a angle meter.I have the original bolt in right now as my local dealer did not have in stock so I just tightened it the best I could. Basically I tightened it to 37ftlbs, looked at where the wrench was in location to the pulley, marked the pulley about where 120 degrees would be and tried to get it there. Well my torque wrench only goes to 160ftlbs and I didn't get to the 120 degree mark. Most likely only got to around 75-100 degrees useing my shadetree method.
I know that it's at least 160ftlbs, but dern I would have to go alot further to get it to 120 degrees. Is it absolutly necessary to go all the way to 120 degrees past 37ftlbs?
When I get the new bolt, I would like to make sure it doesn't back out. So would 160ftlbs along with some loctite blue do it?
BTW, I'm pretty happy with it. It's the 1st mod I've done that I can actually feel. Did the free mod stuff-cut back the EGR tube, T.B. coolant by-pass, throttle stop mod. Got pretty much nothing from all those by my highly tuned butt-dyno <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> .
Debaffeled the hood and sealed it to the airbox-maybe a smidge from that {maybe 1mph in the 1/4}.
Bought a lid- not alot of difference I could feel{it did help at the track though}.
I'm really happy with the pulley though. Calibrated butt-dyno says good mod., even though I know the gains are about the same as the Lid from what I've read. It feels better though-don't really know why. Actually my butt-dyno is pretty shabby. I generally can't feel less than 25 horse sneaky pete shot. I know some folks who can change oil and swear they can feel they gained 3 whopping horse power! <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />
<small>[ March 24, 2003, 02:45 AM: Message edited by: Judd ]</small>
I know that it's at least 160ftlbs, but dern I would have to go alot further to get it to 120 degrees. Is it absolutly necessary to go all the way to 120 degrees past 37ftlbs?
When I get the new bolt, I would like to make sure it doesn't back out. So would 160ftlbs along with some loctite blue do it?
BTW, I'm pretty happy with it. It's the 1st mod I've done that I can actually feel. Did the free mod stuff-cut back the EGR tube, T.B. coolant by-pass, throttle stop mod. Got pretty much nothing from all those by my highly tuned butt-dyno <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> .
Debaffeled the hood and sealed it to the airbox-maybe a smidge from that {maybe 1mph in the 1/4}.
Bought a lid- not alot of difference I could feel{it did help at the track though}.
I'm really happy with the pulley though. Calibrated butt-dyno says good mod., even though I know the gains are about the same as the Lid from what I've read. It feels better though-don't really know why. Actually my butt-dyno is pretty shabby. I generally can't feel less than 25 horse sneaky pete shot. I know some folks who can change oil and swear they can feel they gained 3 whopping horse power! <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> <img border="0" alt="[jester]" title="" src="graemlins/gr_jest.gif" />
<small>[ March 24, 2003, 02:45 AM: Message edited by: Judd ]</small>
03-24-2003, 08:52 AM
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Re: Underdrive Pulley bolt ?s When I did mine, I just used a 24" breaker bar, braced my feet up against the wheel, and torqued the crap out of it. 120* past the 37 lb-ft. mark is like 500 lb.-ft.! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> I don't remember the exact number, but its up there. You more than likely will not be able to get it the full 120*, I couldn't, and I'm no wuss! (6'2", 230lbs)
Good Luck! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
Good Luck! <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
03-25-2003, 01:34 AM
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Re: Underdrive Pulley bolt ?s Thanks man, I was a bit worried about not being able to get to the required angle. Good to hear that "good and tight" will work.
