Multi-purpose Taco build

[edgear]

That looks awesome, Blake! Did you copyright your install? Mind if I copy you?? I can't wait to see it up close. I think I'll probably end up ordering most of the same components. Kinda sad having a call sign but no equipment to transmit with...

 

[erin]

Very clean install Blake, not that I expected anything else though, haha!

Maybe in the future, I'll have to pick your brain on all this radio stuff, really not my cup of tea.

 

[SEREvince]

Love the clean installs!

Question on the brakes, several write ups I have read say that the 231mm Tundra calipers will not fit and to use the 199mm calipers.

Any reason why?

Thanks

Vince

 

[DaveInDenver]

Where you mounted your radio face is pretty similar to where my radio ended up. It looks like with the just the face you have the display closer to the rear view, but I had to turn my radio towards the driver a bit to be able to read the LCD. Yours looks a whole lot nicer than my hack job, though.

View attachment 6282

 

[BajaTaco]

Blake, that looks awesome. Nice job! Good luck to both of you with your tests today.

 

[BogusBlake]

Love the clean installs!

Question on the brakes, several write ups I have read say that the 231mm Tundra calipers will not fit and to use the 199mm calipers.

Any reason why?

Thanks

Vince

The calipers I used are 231mm ones. They fit just fine.

I suspect that the wheels on earlier versions were the reasons the big calipers didn't fit. I've read about some 4runners having to use the 199mm calipers for that reason.

 

[Jacket]

Is that face plate being supported only by the headliner?

 

[DaktariEd]

That's a really nice arrangement and install...
:sombrero:

 

[BogusBlake]

Is that face plate being supported only by the headliner?

Yeah. It's screwed into it.

The facepalate doesn't weigh much and the headliner has a layer of plastic or fiberglass or something under the felt that stiffen it up. I have a backup plan if this turns out to not be so durable.

 

[Bighead]

The calipers I used are 231mm ones. They fit just fine.

I suspect that the wheels on earlier versions were the reasons the big calipers didn't fit. I've read about some 4runners having to use the 199mm calipers for that reason.

Are you still running OEM wheels? What is the backspacing?

 

[BogusBlake]

Are you still running OEM wheels? What is the backspacing?

Yep, Factory wheels.

 

[ntsqd]

snip............
The calipers I used are 231mm ones. They fit just fine.

Something I'm curious about, no change in upright, that is to say that the Tundra calipers bolted to the Taco uprights and had the proper radial clearance (or something close) with the larger rotor OD?

If so, that might be handy knowledge when looking at upgrades for earlier trucks.

Have you any idea if, and if so, by how much the piston areas differ?

Hope that's not putting you on the spot, I used to design for wilwood so brake stuff is kind of a hobby of mine.

 

[BogusBlake]

Something I'm curious about, no change in upright, that is to say that the Tundra calipers bolted to the Taco uprights and had the proper radial clearance (or something close) with the larger rotor OD?

The Taco and Tundra "uprights" are the same part (at least for '04), so they required no changes.

Have you any idea if, and if so, by how much the piston areas differ?

I didn't measure. I know the force applied by the brakes (or any other hydraulic system) is directly related to the area of the piston. I don't think the increased braking power is due to larger pistons, but rather the larger diameter (and therefore longer moment arm) of the rotors. I also think the Taco brakes faded really fast which I perceived as weak brakes. The much greater thermal mass of the Tundra parts helps with this problem, allowing the brakes to be more effective for longer.

Hope that's not putting you on the spot, I used to design for wilwood so brake stuff is kind of a hobby of mine.

No worries- I'm an engineering geek too.

 

[DaveInDenver]

Did you get 231mm calipers under the Toyota TSB or did you just go to the parts store and ask for calipers for a Tundra? I'm not sure what NAPA would give you if you got loaded calipers for, say a 2002 V8 Tundra.

I thought the 231mm (the 13WL castings) and TSB 5.7" pads would not fit Taco and 4Runner 16" wheels without grinding (supposedly OK on 17" wheels). Interesting. My understanding was that you had to go with the 199mm (the SW13E castings) for older 16" rim trucks.

You get the bigger and way heavier Tundra rotor in both cases, so that's probably the biggest part of the upgrade. This is all academic for me since I'd still running those like, so 1991 15" rims. But I would like to do the Tundra brakes (if they'd even work on mine) and so if I ever did go to a larger rim I might just go straight to a 17" rim if it means my choice of brakes is not limited.

 

[ntsqd]

For a entirely different though fairly generic application I wondered which gained more braking torque, Rotor OD increase or piston area. It was nearly a draw. Which surprised me, I expected the rotor to win.
Thermal mass flattens out the curve (& may be enough for the application), but longer term is pumping more air thru the rotor. Remember those early Greenwood Corvettes with the Corvair cooling fans bolted onto the BBS wheel centers?

What does the "199mm" and "231mm" refer to? That'd be a puny rotor OD, so it must be something else like caliper length?