J30 Calipers.

[coolestandy007]

I'm doiing the swap to the J30 caliper but I feel a little uncomfortable about redrilling the rotors. Is there any 4 lug caliper that will fit a 92 coupe and will work with the J30 calipers?

[modulation]

No.People will say you can use Altima/Sentra R rotors or whatever but those maximum thickness is well bellow the minimum thickness in the FSM for q45/300zx/j30 or whatever.

Just drill the rotors man.I drilled mine back in April or so and have driven over 4,000 miles since then with no problems.

I was a little nervous too, but keep in mind that the rotors are hub centric and that the bolts aren't putting side-to-side stress on the rotors. The bolt holes simply allow the bolts to go threw and the torque you place on the bolts clamps the wheel down to the rotor down to the hub. The friction between the hub/wheel/rotor is what keeps the rotor in place, not the bolts, they simply provide the clamping force..

In otherwords your rotors aren't going to be weaker,crack or anything else if you drill them. Use a good drill, hard bit, high rpm, and a bit of lubricating oil (metal oil, not ky.)

[P_856]

theres a few companies online that offer those rotors drilled for 4 and 5 lug

[modulation]

theres a few companies online that offer those rotors drilled for 4 and 5 lug

That's true there are.FRsport I think sells some..

But they are a total rip off..

[iitywygms]

Drilling is easy.Place the 5 lug and 4 lug rotor face to face. Line up one lug hole on each rotor, make sure the center hub hole is nice and centered. then use a nut and bolt to lock them together. Now all you have to do is drill 3 holes, and the 4 lug rotor acts like a drill guide. I did it using a hand drill and it came out perfect.