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I did the gen 2 caliper swap, never had an issue with using gen 1 rotors.


Just remember this is a documented safety issue. The Gen 1 V6 rotors start out 2mm thinner (22mm) than the Gen 2 (24mm - minimum wear spec 22.4mm) so there is less material

This is just a concern if you put SR calipers on L.S./Sport/V6 Gen 1 rotors.
I have L.S. calipers and original new V6 Gen 1 rotors. AllData , et.al. show that's all ok.
-----Just make sure you match up SR calipers with SR rotors if you do this modification.------


I'd be sure super cautions about this. All the Gen 2 rotors are the same diameter and thickness 24mm (new) no matter if they are RS/LS/SR (or Montero Sport) and Gen 1 (V6) are 22mm (new). Best thing to do is verify the thickness of the replacement rotors and be sure they are 24mm.

So if you are sticking any Gen 2 caliper on a Gen 1 rotor, you are putting them on a rotor that is under the minimum design wear limit for thickness.

Has anybody actually seen pads dislodge? From what I have learned the reason for min spec is heat dissipation after min spec the rotor can't cool off so it warps causing peddle pulsation, Easy to notice and repair before safety issues. I have seen rotors worn all the way down to the vents and pads with no lining and partially worn backing plate, what usually happens is the peddle goes to the floor due to piston coming out of the bore and losing hydraulic pressure. Obviously this is an extremely rare and careless condition, but still pads where solid.

Last edited by bodyswapped8789; 01/10/15 06:01 AM.
89 V6 manual trans Dodge Raider frame 87 cold weather pkg 2" body lift, Soft 8's wraped in BFG km2 33x10.5x15, JDM Pajero yellow Bosch fogs. Yackama basket. Duel bouncies gen II rear springs,gen II ft brakes,master and booster.