applicable to:

87-91 Trooper
88-95 Pup
89-93 Amigo
91-92 Rodeo (also later 2.6 2wd)


caliper, mounting bracket, dust shield & rotor donors:

92-02 Trooper, SLX
93-01 Rodeo, Passport 4WD
94 Amigo
98-01 Amigo, Rodeo Sport
99-01 VX
02 Axiom

*100% bolt up, no fitment hassles or modifications necessary*

1G and 2G+ calipers utilize same size pistons so shouldn't be any hydraulic issues. hoses mount in a different place but stock lines appear to be long genough. though I did mount up the longer ss braided lines from Indy4X at time of install so can't confirm that.

here is the caliper mounting brackets, early on right, later on left:


plain to see mounting holes on the knuckle side are same distance apart.

*big thanks to Sacramento_Phil for crawling under his 93 RS long long ago to measure the 2G bolt spread for me & confirm my suspicions. <img src="/forums/images/graemlins/cheers.gif" alt="" />

you can see on the caliper mounting side it is fairly larger, as is the space for the pads:



I also installed the dust shields from the later brakes(thanks RobG), they are about 1/2" larger. after comparing side to side I'd say you could probably get away with using the stockers by bending back the lip & maybe trim a little for caliper opening:



the later rotors are almost a full inch larger diameter and a bit thicker:





pictures don't do it justice, when the parts are in your hands its a big difference. the new rotors alone have almost as much heft as the stockers + inner hub/bearing assembly.

side by side with inner hubs:




in addition to larger rotors, the 2G+ brakes utilize pads that have more friction surface area. 1G and 2G compared as aligned by top edge:





normally I cheap out on budget pads but this time opted for a good ceramic compound to maximize my efforts. look to ebay, thrifty deals abound.

what I started with:



end result:



its been so long since I drove it with the stock brakes that I can't give any real comparison opinions. so far just been driving mellow and haven't needed to really stomp on it, everything feels normal.

but considering a late model Trooper weighs up to 1000 lbs more than a 1G, this should be more than adequate.

Pretty cool swap. Wonder if the 2G trooper 12 bolt brake setup can swap over to the 1G rear 12 bolt?

HI CHRIS THIS IS A VERY EASY SWAP AND IF YOU USE THE LATE MODEL 93-97 RODEO BRAKE HOSE FOR THE FRT IT IS A COMPLETE BOLT ON SITUATION, THEY WILL REALLY HAUL THE TROOPER DOWN EASIER, HAVE BEEN DOING THIS UPGRADE USING ALL STOCK PARTS SINCE 93 , AND SORRY THE REARS ARE NOT INTERCHANGABLE AS THE CALIPER BRACKETS ARE WELDED TO THE HOUSING, THE ONLY EASY WAY TO GET THE LARGER REAR BRAKES IS TO USE THE 93-97 RODEO REAR AXLE ASSY AND IT IS A BIT WIDER THAN THE EARLY TROOPER AND OF COURSE IT IS A DANA, ONE OTHER SOLUTION IS TO FIND A 94 AMIEGO , IT CAME STOCK WITH THE LARGER BRAKES FRT AND REAR ,,JERRY

Did you have to go with larger wheels than stock (16")?

nope

great tech! glad to see it all come together.

-Rob

I have been wondering about how much could be swapped over to the first 1G trucks, like the 8 bolt front 86 Trooper I'm driving. I have found that the 86's larger discs could be swapped back to a Chevy LUV/Isuzu KB pickup, but I've wondered if there is a further upgrade for my poor 86 in the front. Any chance any of this stuff will fit without a complete front axle assembly swap?

The rear is easy, just swap the whole 10 bolt axle up to a 12 bolt, better brakes and stronger axle all in one.

Rock on man!!! Thanks for the info, I'm probably going to be doing this soon. <img src="/forums/images/graemlins/cheers.gif" alt="" />

Sounds like a great idea, especially if you have oversize tires...

THE REAR LIKE YOU SAY WOULD BE RELATIVELY EASY SWAP , BUT THE FRONT ON THE 86 , WOULD BE A PAIN AS THE FRONT BRAKES AND THE ENTIRE FRONT END DESIGN WAS COMPLETELY DIFF, THAN THE 87 AND LATER , AXLE SIZE AND THE HUBS ARE MUCH SMALLER AS ARE THE UPPER AND LOWER BALL JOINTS , PROB WITH A BIT OF MACHINE WORK YOU COULD SWAP THE 87 KNUCKLES WHICH WOULD THEN NECESSITATE THE CHANGE TO DIFF AXLES AN D THEN THE TIE RODS ENDS ARE GOING TO BE TOO SMALL, WHAT WOULD BE THE EASIEST SWAP TO GET THE LATER BRAKES AND THE BIGGER AXLES , CUT HE FRONT FRRMAE AND GET AN 87 OR 88 FRT FRAME CLIP COMPLETE WITH ALL THE PARTS AND CLIP IT AT THE FIREWALL THAT WAY YOU GET THE NEWER BALL JOINTS AND THE LARGER UPPER AND LOWER CONTROL ARMS AND HEAVEIER STEERING ARMS AND ALL ASSOCIATED PARTS , NOT AS DIFFICULT AS IT SOUNDS BUT NEEDS A GOOD COMPETENT WELDER TO GLUE THE FRAMES BACK TOGETHER . JERRY