MJ 4.0 Posted October 16, 2023 Share Posted October 16, 2023 The brakes on my 1988 Comanche are not very good. I have plenty of brake pedal and the rotors and pads are good, but it doesn't stop very fast. I'm concerned if I had to "slam" them on, I might not stop in time! I just saw a TV show where they upgraded the brakes on a Jeep Cherokee XJ to Powerstop brake rotors, pads and installed braided steel brake lines, (nice look too). On the Powerstop.com website they don't list any Comanche kits, however, they do list brake kits for late model Jeep Cherokee XJ's through 2001. Is it possible to upgrade 88' Comanche stock brakes to Powerstop brakes using the Cherokee XJ kit? Thanks, LB 4.0! Link to comment Share on other sites More sharing options...
fiatslug87 Posted October 16, 2023 Share Posted October 16, 2023 I would first look into to the dual diaphragm brake booster modification. Nice looking MJ Link to comment Share on other sites More sharing options...
MJ 4.0 Posted October 16, 2023 Author Share Posted October 16, 2023 19 minutes ago, fiatslug87 said: I would first look into to the dual diaphragm brake booster modification. Nice looking MJ Ok, thanks! I saw that RockAuto has full drop-in brake kits from R1 Concepts with drilled and slotted rotors, etc. for about $325.00 https://www.rockauto.com/en/moreinfo.php?pk=14109309&cc=1181584&pt=13824&jsn=485&jsn=485 Just not sure how much more "stopping power" this would buy me. Link to comment Share on other sites More sharing options...
jpnjake Posted October 16, 2023 Share Posted October 16, 2023 2 hours ago, MJ 4.0 said: The brakes on my 1988 Comanche are not very good. I have plenty of brake pedal and the rotors and pads are good, but it doesn't stop very fast. I'm concerned if I had to "slam" them on, I might not stop in time! I just saw a TV show where they upgraded the brakes on a Jeep Cherokee XJ to Powerstop brake rotors, pads and installed braided steel brake lines, (nice look too). On the Powerstop.com website they don't list any Comanche kits, however, they do list brake kits for late model Jeep Cherokee XJ's through 2001. Is it possible to upgrade 88' Comanche stock brakes to Powerstop brakes using the Cherokee XJ kit? Thanks, LB 4.0! Yes, if it fits a 97-01 you would just need to swap the knuckles on your front axle to the newer style 97-01 knuckles, I'm 99% sure there is other years with the same knuckles, but I can’t remember off the top of my head. P.S You got a sweet rig, Black is the best MJ color Link to comment Share on other sites More sharing options...
GrandBoost98 Posted October 16, 2023 Share Posted October 16, 2023 It doesnt look like you have any extra weight, huge tires or lift so stock brakes should be adequate. I don't know when mine were changed last but they don't look new and I can still lock the rear wheels up. There might be something else going on in your brake system But I do like powerstop products, have them on most of my vehicles. R1 concepts is a good brand too. If you go offroad with yours, you might want to stay away from the drilled and slotted option though Link to comment Share on other sites More sharing options...
Htchevyii Posted October 16, 2023 Share Posted October 16, 2023 If you want to investigate the dual diaphragm booster upgrade, see below. You can ignore the Bendix ABS removal part. Link to comment Share on other sites More sharing options...
MJ 4.0 Posted October 17, 2023 Author Share Posted October 17, 2023 2 hours ago, Htchevyii said: If you want to investigate the dual diaphragm booster upgrade, see below. You can ignore the Bendix ABS removal part. Awesome! Thanks! Link to comment Share on other sites More sharing options...
MJ 4.0 Posted October 17, 2023 Author Share Posted October 17, 2023 5 hours ago, GrandBoost98 said: It doesnt look like you have any extra weight, huge tires or lift so stock brakes should be adequate. I don't know when mine were changed last but they don't look new and I can still lock the rear wheels up. There might be something else going on in your brake system But I do like powerstop products, have them on most of my vehicles. R1 concepts is a good brand too. If you go offroad with yours, you might want to stay away from the drilled and slotted option though okay thanks...I think there is something not quite right. Possible booster...not sure..thanks for the info! Link to comment Share on other sites More sharing options...
MJ 4.0 Posted October 17, 2023 Author Share Posted October 17, 2023 6 hours ago, jpnjake said: Yes, if it fits a 97-01 you would just need to swap the knuckles on your front axle to the newer style 97-01 knuckles, I'm 99% sure there is other years with the same knuckles, but I can’t remember off the top of my head. P.S You got a sweet rig, Black is the best MJ color Cool! Thx for that! Link to comment Share on other sites More sharing options...
pizzaman09 Posted October 17, 2023 Share Posted October 17, 2023 6 hours ago, GrandBoost98 said: It doesnt look like you have any extra weight, huge tires or lift so stock brakes should be adequate. I don't know when mine were changed last but they don't look new and I can still lock the rear wheels up. There might be something else going on in your brake system But I do like powerstop products, have them on most of my vehicles. R1 concepts is a good brand too. If you go offroad with yours, you might want to stay away from the drilled and slotted option though I second the idea to stay away from the drilled and slotted rotors. I put them on a few of my vehicles and find that they vibrate sometimes under braking. Power stop is the only brand of brake rotors I've found that didn't warp on my 99 Oldsmobile Eighty Eight after 2 weeks of driving one them. Power Stop makes quality products for sure. On my Comanche, I was a bit disappointed in my stopping power even though feel was great and firm. I upgraded to some nice Hawk HPS pads, the more aggressive pad has really improved the stopping power. Link to comment Share on other sites More sharing options...
GrandBoost98 Posted October 17, 2023 Share Posted October 17, 2023 @pizzaman09 I have drilled and slotted rotors on my street vehicles. But I wouldnt put them on my offroad vehicles that could get mud and rocks stuck in there. And Hawk is another great option for pads. Ive used them in the past when I would piece everything together but have been using powerstop now mostly for the convenience of an all in one kit Link to comment Share on other sites More sharing options...
pizzaman09 Posted October 17, 2023 Share Posted October 17, 2023 32 minutes ago, GrandBoost98 said: @pizzaman09 I have drilled and slotted rotors on my street vehicles. But I wouldnt put them on my offroad vehicles that could get mud and rocks stuck in there. And Hawk is another great option for pads. Ive used them in the past when I would piece everything together but have been using powerstop now mostly for the convenience of an all in one kit I have found similar issues with my street cars, particularly a BMW M5 where in the winter the water would freeze into and onto the rotor and then cause a zero brake situation when backing out of parking spots. Link to comment Share on other sites More sharing options...
cruiser54 Posted October 17, 2023 Share Posted October 17, 2023 Booster for the win!! Link to comment Share on other sites More sharing options...
ghetdjc320 Posted October 17, 2023 Share Posted October 17, 2023 This may be helpful in determining how to upgrade your brakes: Link to comment Share on other sites More sharing options...
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