HDJ81 Rear Discs

[TrouserChili]

Anyone know if 1991 HDJ81 rear discs cross to any NA application? I thought i read that they cross over but i wasn't able to find the thread.

TIA

[jinzuke]

I have been told that they are the same as a lexus 450 93-97

[jasonmt]

Originally Posted by jinzuke

I have been told that they are the same as a lexus 450 93-97

Rear pads are the same, discs are not.

The rear discs on 90 to ~8/92 JDM 81's were smaller than the ones used post ~8/92 in both the US and JDM models.

Rear rotors went from 312mm OD and 18mm thick to 336mm OD and 18mm thick. No cross to a US model for the earlier 312 x 18 discs.

The front rotors went from 286mm OD and 25mm thick to 311mm OD and 32mm thick. These will cross with the US models of the same vintage, but finding a rotor is not just a trip to the local NAPA.

[roscoFJ73]

Im fairly sure the HZJ75 rear discs are 312x18,if so ,ENS in Canada would have them.

[jasonmt]

Originally Posted by roscoFJ73

Im fairly sure the HZJ75 rear discs are 312x18,if so ,ENS in Canada would have them.

No issues with getting the discs, getting the discs quickly and at a decent price is another story.

While the 70 series rear discs are 312 x 18 the total height on them is only 63mm compared with the 80 series having a total height of 103mm.

[roscoFJ73]

Originally Posted by jasonmt

the total height on them is only 63mm compared with the 80 series having a total height of 103mm.

Do you mean width of the area that has friction contact?