KZN185W

iTrader: (1)

Toyota issued a TSB on the brakes for the Tundra and Sequioa. I think 2003 and later models came with the modified calipers and bigger pistons/pads.

So I guess the bigger raybestos pads are the ones for the newer calipers.

MTL_4runner

I thought one was for a 15" wheel and the other was for a 16" wheel (not entirely sure about that?). The TSB did come out with a modified caliper but the older style should no longer be available and it shouldn't matter anyway since the original caliper was undersized for the Tundra but still far better than the OEM 4runner caliper.

This is a good thread with part numbers:
https://www.yotatech.com/forums/f2/braking-problem-69285/

FilthyRich

Left loaded caliper = Raybestos RC11039

Right loaded caliper = Raybestos RC11040

Rotors = Raybestos 96931

However, there are two more p/ns for Raybestos brakes for the SAME year vehicle. I got the p/ns for a 2003 Limited 4wd tundra. No 15" option that I know of--hence the confussion about two differenet pad sizes--I guess I need to call the 800 number on the site.

I am not questioning the above p/ns working, just what the longer pads are for.
I am planning on running the 231 mm rotors

bosco659

To go ahead with this upgrade, do you just buy the loaded caliper or do you have to but the mounting bracket for the caliper as well.

Where's the good deals for stainless lines?

Thanks

bosco659

^^^^^^
Anyone?

DoubleZero4x4

The way it was told to me was there is only a little grinding (less than 1/16")of a dust shield to make this work.

For the quesion about stainles lines. This was referred by a friend who got some for a different vehicle.

Goodridge

I don't personally know about the product or the long term quality so use at your own risk.

Fingers

No mounting bracket is needed. If you go with the 199mm Tundra calipers you need to remove about a half inch of the upper tin spash shield. If you use the 231mm calipers (post Tundra TSP items) you need to remove a half inch from both the top and bottom of the spash shield and may have to grind some off your wheel to clear the caliper depending on the style and year of your wheels. See this post: https://www.yotatech.com/forums/f2/big-tundra-brakes-3rd-gen-4runner-74601/

bosco659

Thanks for the info. Has anyone measured the piston diameters of the 4Runner vs the Tundra calipers? I personally haven't had problems with rotor warpage on my Runner (knock on wood ), but would like additional stopping power. If the info isn't readily available I will most likely order up the 199mm calipers and measure them up vs stockers.

FWIW the Goodridge lines are decent quality. I had a set on my Supra. Other lines were plain braided stainless but the Goodridge lines were plastic coated and had decent mounting brackets built in.

Dumb question but I will ask anyway: where is the 231 / 199 mm measurement taken? I assume that the rotors pre and post TSB are the same diameter but the upgrades are thicker.

Happy New Year to all - all the best in '06 and keep up the good communications on this forum!!

Fingers

The 231/199 refers to the overall length of the caliper assembly. The 231 calipers are 4mm thicker that the stock and 199mm units. The pistons are very slightly larger on the Tundra calipers, not enough to make any difference in feel. These brakes are not any more "powerful" than a stock set when cold but they heat up they are far more fade and warp resistant and thus retain the braking capacity gradually lost by the less dense stock rotors with heavy use.

bosco659

Thanks for the clarification. A little more thinking to do on this mod now

cimahar

I have a 99 4Runner with 16 inch wheels, my question is: do i need just the caliper's or rotor's from the Tundra or BOTH caliper's and rotor's ???

DrBeau

You need both. The bigger rotors is how you combat warping (better heat dissipation). You need the new calipers to fit these bigger rotors. More braking power is just a side effect.

mjwalfredo

Has anyone tried Fenco Reman calipers? I did a search on autozone.com for a 2003 Tundra 4wd and got these at $70 a pop plus a $52 core charge. The part number is C9689. Here is a link to the page:

http://www.autozone.com/servlet/UiBr...%7ENONE%7C%7EV

FilthyRich

I found loaded reman'd 2003 V-8 Tundra calipers for $124 each

www.taylorautomotive.com

calrockx

that's cool. i looked for the older/smaller size calipers but didn't find those tho

FilthyRich

they do want $60 per caliper for a deposit. Not sure if you can pass the 4r off.

They also have blank Brembos for $55. But I am not sure if that was one or a pair. It didn't say.

I still need to price them locally. It will be much easier to bring the 4r ones back in person.

Mr. Bob

Are the pads the same?? or do you need Tundra pads too??

ebelen1

Tundra pads as well. Tundra rotors, calipers and pads. Everything else is fine and doesn't require changing.

cruzin1a

I would just love to get rid of the rear drum brakes. I thought a read a thread on here for that kind of mod.

ebelen1

There are a couple of choices but it seems like the cost/benefit is not very good. During a couple of those threads, others have said the drums are fine as long as they are kept adjusted and cleaned.

Sky and Downey have rear disc conversions but IIRC, Sky's used an Eldorado caliper and cost a ton by the time you were done. Downey's is $500 but you can't use your e-brake. There's a "floater kit" and I can't even try to describe what this entails but again IIRC, this was a $1500 option.

I've gone w/ the Tundra conversion and it's a night and day difference. With my drums properly adjusted, I don't know how much more braking you really need. What I haven't done that should improve the braking is get better pads and do steel braided lines so I can get more brake fluid to the brakes. Others have even gone as far as swapping master cylinders from the old Land Cruisers. Again, I don't know about the cost/benefit. Good luck.