D90 Brakes, what's the deal?

[fishEH]

So about 6 months ago I upgraded my D1 to D90 brakes. Only been out wheeling with them twice since.
The first time the vents on the rotors were packed full of mud. I had to pull the wheel and jam a screwdriver through each vent to clear it out. Big PITA.
The second time the slots/holes on the faces of the rotors were packed full of mud, and it appears it is effecting the way the pads contact them.

So what is the deal with these fancy rotors? Does everybody experience this? How do you deal with it? At this point I'm regretting selling my D110 calipers. :banghead:

 

[Roving Beetle]

For off road the 110 calipers are hard to neat. No vents, no clogging.

Drilled/slotted are NOT worth it.

 

[fishEH]

Where were you when everyone else was telling me they were tits!?

 

[pdxrovermech]

i believe the d90 calipers just provided more braking power(?). personally i dont find myself doing any high speed braking maneuvers when i off road.

 

[Roving Beetle]

Only thing about the d90 upgrade vs 110 upgrade is vented rotors which help possibly with long high speed braking like mountain driving etc. and people will argue this too.

The 110 upgrade is great as you get the bigger pad area and better braking force but retain a solid rotor that can't clog up off road. Not that it's normally that huge an issue offroad. But as you found it can happen.

Drilled and slotted are great for bling bling effect and arguably possibly for a track car - but a rover. No. Just no. Ha ha

 

[Durt D1ver]

Where were you when everyone else was telling me they were tits!?

Re-read your old thread, Doug did tell you not to get drilled/slotted rotors.

http://discoweb.org/forums/showthread.php?t=79868

 

[fishEH]

Re-read your old thread, Doug did tell you not to get drilled/slotted rotors.

http://discoweb.org/forums/showthread.php?t=79868

Well to be fair he said they weren't worth the extra money, not that they sucked for off roading. The rotors were pretty affordable from Justin so I figured why not, not being aware of negative aspects to them.

Anyone want to trade 110 for 90 rotors?

 

[Roving Beetle]

So did you get the caliper spacers for your 110 calipers and are running d90 vented rotors or just solid ones with slots and drilled holes?

 

[Roving Beetle]

Reading your other post it sounds like your using the 110 calipers and solid rotors but with drilled holes? 11/16 " thick or so?

 

[Roving Beetle]

Nevermind - here up top you state you sold the 110's.

Nothing to see here. Ha ha

So you'd need calipers and rotors not just swapping rotors with someone. Right!?

 

[Mike_Rupp]

I don't think 110 rotors will work with the D90 calipers. The vented rotors are wider than the solid rotors.

 

[Tugela]

At this point I'm regretting selling my D110 calipers. :banghead:

On the bright side, I am extremely grateful that you sold your D110 calipers.

Bummer about the crud in the rotors. Are you at least noticing any improvements on the pavement?

 

[fishEH]

Yeah, I know all about the 110/90 differences.
I'll probably just try to find regular D90 rotors next time(no drilled/slotted).
I was just curious if others running the D90 gear experienced similar issues.

 

[1920SF]

I'm not, but mine are just vented (not drilled/slotted)

 

[fishEH]

I also have wheel spacers which opens up the vents to the elements more, I guess. Oh well.

 

[Jake1996D1]

Just take it to the car wash and spray off the rotors and hit the highway. You're talking about dirt getting trapped in the VENTED part of the rotor right not the crossdrilled spots? I dont care about dirt blocking the drilled holes in the rotor thats not the end of the world. The way I see it, dirt trapped in rotor makes it a solid rotor, why change it? hahaha

 

[p m]

The way I see it, dirt trapped in rotor makes it a solid rotor, why change it? hahaha

That's right, keep it there until the rust eats it out in a year or two.

 

[roverover]

I run wheels spacers and drilled slotted (Justin type) rotors and haven't had an issue for years now I am not a mudder but its been wet a couple of times

 

[Devildog01]

To be fair Randy's truck hasn't been driven over 10 mph in a long time.

 

[fishEH]

I run wheels spacers and drilled slotted (Justin type) rotors and haven't had an issue for years now I am not a mudder but its been wet a couple of times

Yeah, I'm not a mudder either, but occasionally I have no choice.