Quote:
Originally Posted by Doc Oc
Nope, ARP that comes with the vac kit...
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Based on the autotalent pics,
- OEM coated bearings with OEM bolts are not a good combo - way too much wear at only 1500.
- Considering Doc Oc had the same exact 702/703 bearings using ARP-2K bolts, they were perfect with about 10x the amount of miles.
Assuming no other crazy variances in play - perhaps it's a combination of too tight clearances of the bearing and eccentricity/bearing crush caused by the bolts as Malek has pointed out. I would love to see either VAC or BE bearing pictures with OEM bolts that is uninstalled after 15-30K miles. I would also love to see examples of ARP bolts used with OEM bearings (highly unlikely). Maybe there's some sort of multifactorial issue, where OEM bolts can be used with a certain amount of higher clearance, or OEM bearings can be used with ARP bolts...and best case scenario is extra clearance bearings with ARP bolts.
We need more data / studies!