Anyone using these rotors with long (3") studs? Need long studs to run my 3.5" Centerlines up front at the track. ARP 100-7702 ( which are for oem discs and drum hubs) do not seem correct as the knurl length seems short. See pic, Raybestos stud in middle , ARP on right. The stud on the left is from a Right Stuff rotor with a thinner than oem rotor hat. Not using them. Any suggestions from the Racing crowd...? Thanks.................Jim
A bit more information : Raybestos studs: Knurl diameter - 0.555 Knurl length - 0.638 ( from seat to end of taper) ARP studs: Knurl diameter - 0.578 Knurl length- 0.505 ( from seat to end of taper) ARP Website says hole in rotor should be between 0.006-0.016 smaller than knurl diameter. While I am abit out of that parameter, 0.023. I'm not worried about that as I am about the knurl length being 0.133 shorter than the Raybestos stud provided with the rotor. What say you???
Apparently, the Raybestos 5100 number, cross references with Napa Ultra Premium Disc Brake Rotor #85532 More food for thought....Jim
No ones running long studs in OEM style front disc rotors? Anyone with some insight on what studs should work, re: that they/you are using? It's all that's left to do on my 70' Skylark's front drum to disc upgrade. BTW, 0.133 is a wee bit over an 1/8th of an inch.......Jim
After re-taking measurements, I'm going to order these: Check out this page from Summit Racing https://www.summitracing.com/parts/mor-46160 I'll post back with results.......Jim