What ARP wheel studs do I need?

[blufc3s]

I have the rear hubs off the car and plan to do this as well.  For about $50 per side for studs and bearings it is good peace of mind and not leave ya stranded.

I haven't really heard of anyone shearing off stock wheel studs.... but it would certainly mess up your body on the car if it did.

I have aftermarket "Bullet" wheels & I am losing a few turns on the studs from stock, so I've been a little concerned about it.
Stew

[ablake211]

I used the longer ones on all four corners.

[mpcv2000]

I don't know if I did something wrong but I bought some ARP # 100-7708 2.5" long studs but they are too long for my 89 Turbo II running 5Zigen FN01R .


Left side is the 100-7708 studs and right stock rear Turbo II studs :







Way too long for my need unless I did something wrong. 









I've decided to cut 1/2" and they look way better.












I haven't took the front wheels off the car yet but looks like the 100-7713 3.5" studs will be way too long.


Why FC people run studs soo long ?


For sure the rear ( stock ) studs were way too short :

[digitalsolo]

That's how they normally look (the extended studs). 

[mpcv2000]

Ok cool so no need for me to be that long , glad I cut them.
Thanks Blake. 

[FCs Rule]

http://www.summitracing.com/parts/ARP-100-7713/

http://www.summitracing.com/parts/ARP-100-7708/

those are the two that i ordered

before


after


installed and compared


i did replace my wheel bearing while i was there and i had a press to use at the time.

[FCs Rule]

Ok cool so no need for me to be that long , glad I cut them.
Thanks Blake. 

i left mine long because i like the look of it for some reason..lol

[mpcv2000]

i left mine long because i like the look of it for some reason..lol

...and I did cut mine because I didn't like the look.........

[AndreS]

Why FC people run studs soo long ?

mostly to meet sanctioning body rules for safety with wheels that have really thick hubs.

here's a pic of the 7708s on the front

[FCs Rule]

i left mine long because i like the look of it for some reason..lol

...and I did cut mine because I didn't like the look.........

well you are from canada..lol

[mpcv2000]

Just updating this thread for people using the "search" fonction.

I have ordered the 100-7708 for the front and they work perfectly ( for me at least ) .


Stock front studs with my FN01R-C 5Zigen  ( only 1/2 lenght of the lug nut is screwed on the stud ) :








ARP #100-7708 vs Stock :








Now on the car :












Since day 1 of owning the car the front lug nuts were down on the studs about 5 threads and it was bugging me so this week end I had to put new brakes , it was the perfect time for studs replacements , glad I didn't buy the 3.5" ARP # 100-7713 ( way too long for my need ) .

[FCs Rule]

I made this topic a sticky so others can see what parts to use

[mpcv2000]

Good idea. 

[rex388]

So the 2.5" studs leave enough stick out for IHRA and NHRA rules?

[Troux]

This is something I never really considered. How would one know if they'll need longer studs before putting the wheels on?