2017 service manual

[CarbonDan]

Anyone have a pdf service manual for 2017 I can barrow right quick? Broke 2 studs on the front, had to take the hub off to replace the studs. Just need to track down proper torque values for the 4 hub bolts, that torx bit behind the Hub that holds the wheel speed sensor wheel in place, and the 2 brake caliper bolt torque.
Thanks!

[LuvSpeed]

Here is a thread for Gen 4 torque specs. JonB mentioned in thread there are very little differences between Gen 4 and Gen5. Don’t know if you want to use these.

https://driveviper.com/forums/thread...t=torque+specs

[CarbonDan]

Here is a thread for Gen 4 torque specs. JonB mentioned in thread there are very little differences between Gen 4 and Gen5. Don’t know if you want to use these.

https://driveviper.com/forums/thread...t=torque+specs

Thanks! They all seemed in line, used them last night, so far so good.

[uvbnbit]

Curious how they broke if I may ask.

[CarbonDan]

I use a handheld battery operated impact gun to zip the lug nuts on 90% of the way, then drop the car on the floor and torque to final spec by hand. I just have let the impact overdo it at some point. Spent 2 days on track, then the next morning when it was all cooled off, went to take the wheels off and they just sheared right off.
Seems to be a well-known issue. A bit too much torque, then hard track use, and they'll snap like twigs.

[Arizona Vipers]

I use a handheld battery operated impact gun to zip the lug nuts on 90% of the way, then drop the car on the floor and torque to final spec by hand. I just have let the impact overdo it at some point. Spent 2 days on track, then the next morning when it was all cooled off, went to take the wheels off and they just sheared right off.
Seems to be a well-known issue. A bit too much torque, then hard track use, and they'll snap like twigs.

I've heard of this before. It's never happened to me though and I've taken my wheels off hundreds of times. I ALWAYS hand tighten and ALWAYS use a breaker bar to loosen the lugnuts before using the impact tool.

[LuvSpeed]

I have broken many lugnuts on my Gen 5 before. About 2 years ago, Cable mentioned that he only tightens his lugs to 85 ft*lbs. I started doing that and have not broken a lug since. I am more diligent about rechecking my torque between sessions now. Prior to changing the torque, I also used breaker bar and hand tightened, however, I used to tighten my lug nuts to 100 ftlbs and experience failures. I think that decreasing the torque has made a difference. I also run a die over my lugs every second oil change. I believe the Viper official recs are 130 ftlbs however, so take my advice as you wish.

[uvbnbit]

I use a handheld battery operated impact gun to zip the lug nuts on 90% of the way, then drop the car on the floor and torque to final spec by hand. I just have let the impact overdo it at some point. Spent 2 days on track, then the next morning when it was all cooled off, went to take the wheels off and they just sheared right off.
Seems to be a well-known issue. A bit too much torque, then hard track use, and they'll snap like twigs.

Thanks. Pretty much what assumption was. It's always good to know a "weak" link. THanks for reply

[CarbonDan]

I had been doing 110 ftlbs.
After snapping these I was initially planning on going down to 100, but I'm interested to hear everyone's experience going even lower than that.
At 85, do you find they move at all after a track session or do they generally stay in place?

[SRT_BluByU]

Is the manf spec 107 lb/ft?

[RT SERPENT]

I've been torquing to 105 ft/lbs. No issues, so far.

[MoparJohn]

I moved to ARP studs and use 95Lbs with heavy track use and no issues.

[Lawineer]

Bizarre they'd use 6 lugs and then use weak ones lol

[usmcfieldmp]

I use 90 ft-lbs. Could have sworn I pulled that from my 1999 edition of the Service Manual.

[jwalk]

Ive had a few seize and break a few years ago. Only had this happen on my gen 5. I know a couple other peeps with gen 5 that had the same issue at the Rendezvous a couple years ago. Ive been putting a little anti seize on the studs at the beginning of race season and have not had any issues since. I torque to 95.

[Steve-Indy]

Lug nut torque issue: just for the record, the 2014 Viper Service Info on CD from Tech Authority states a lug nut torque of 107 ft lbs.

As discussed, there are many other issues to consider.

[sharmut]

I had been doing 110 ftlbs.
After snapping these I was initially planning on going down to 100, but I'm interested to hear everyone's experience going even lower than that.
At 85, do you find they move at all after a track session or do they generally stay in place?

I use anti seize with titanium nuts and torque to 80ft/lbs, no issue to date. I check the torque before heading out for each session. Occasionally experience some creep on the rear wheels, nothing significant.

[usmcfieldmp]

I guess if you track seriously it might be worth looking into ARP studs? But seeing as how so many others aren't having problems, the lower value might just be the way to go. An interesting problem. I wonder if the supplier heat treated them wrong.

[Lawineer]

I guess if you track seriously it might be worth looking into ARP studs? But seeing as how so many others aren't having problems, the lower value might just be the way to go. An interesting problem. I wonder if the supplier heat treated them wrong.

I'm guessing they used cheaper bolts because they had 25% more bolts to share the load.

[Simms]

95 ft/lbs here for my Comp Coupe and ACR's.