Scat Pack 4 piston Brembo calipers and rotors

[Mopar_Taxi_Guy]

I wondered if that was you. Very cool! Love the Mopar Taxi.

What happened to the Dart? I remember you saying if it had problems it might sit (or something like that) and it seems like it had a clutch problem tight after you got it home. Did it end up going away?

I bought the Taxi 5-6 years ago from Kevin Wesley.

I believe he still has the Dart Sport he built many years ago but I'm not sure.

 

[DionR]

I bought the Taxi 5-6 years ago from Kevin Wesley.

I believe he still has the Dart Sport he built many years ago but I'm not sure.

Oh! I thought you were Kevin. Guess that's what I get for assuming. I had no idea he sold it.

Glad you are here with the Taxi either way.

 

[Mopar_Taxi_Guy]

Oh! I thought you were Kevin. Guess that's what I get for assuming. I had no idea he sold it.

Glad you are here with the Taxi either way.

Glad to be here. My oldest son and I bought a '68 Dart. That's how I ended up here.
Not sure what route we are going to go with it yet. But time will tell.

 

[Mopar_Taxi_Guy]

I design everything using a MasterCAM Draft license that I bought 20 years ago for $99. I've never upgraded to 3D. Most of my parts are 2.5D since I rarely do anything that is truly 3D. The radial mount parts are so much stiffer that you can make them out of aluminum. Aluminum is much faster to machine so the cost is much lower.
Here is a picture of the Viper kit that I used to sell. The rotors were off a Mercedes S class, the calipers were from a Viper and the brackets were made from aluminum. They were basically just some aluminum bar stock with some holes drilled and tapped in them. This was all designed in MasterCAM 2D and made by local machine shops. The brackets didn't cost me much to have made, maybe $40 each.

View attachment 1716231206

Andy.

What year of S-Class where these rotors from?

 

[DionR]

I've got an idea for my fabricated spindle that would be easier if the caliper were at the front of the spindle instead of the rear. So I went out this afternoon and bolted it up temporarily to see.

Sure enough, miles of room with the '73+ suspension. Heck, might even fit the '72 and older.

Man that rotor looks huge on the car:

 

[swisswill]

I’m so glad you brought this thread back up. This is where I first saw your spindle and got me thinking about it myself. That rotor is big, which one is that?

I’m curious, what did you base the spindle geometry on? Stick abody, FMJ? With the Mustang hub, does it push the track width out at all? One you’ve mounted your spindle with an 18” wheel and the control arm, how much talker can you go?

If I’m tracking with what you’ve done so far, we need to figure out rotor, caliper, and dial in ball joint pick ups? Drill bits are available for the tapered hole so I don’t think that’s a big deal. I need to look for mustangs in junk yards near me to see about spindle measurements to the caliper mount. I imagine that would make things easier for getting caliper lined up correctly.

My waterjet guy is a full machine shop and we can probably build these for a super reasonable price. Especially if I help with machining.

 

[bjkadron]

I’m so glad you brought this thread back up. This is where I first saw your spindle and got me thinking about it myself. That rotor is big, which one is that?

I’m curious, what did you base the spindle geometry on? Stick abody, FMJ? With the Mustang hub, does it push the track width out at all? One you’ve mounted your spindle with an 18” wheel and the control arm, how much talker can you go?

If I’m tracking with what you’ve done so far, we need to figure out rotor, caliper, and dial in ball joint pick ups? Drill bits are available for the tapered hole so I don’t think that’s a big deal. I need to look for mustangs in junk yards near me to see about spindle measurements to the caliper mount. I imagine that would make things easier for getting caliper lined up correctly.

My waterjet guy is a full machine shop and we can probably build these for a super reasonable price. Especially if I help with machining.

Good to see you back out. I remember your dart was one of the early Pro-touring ones. I'm also interested in doing a custom spindle if we want to work together on this. I have engineering and machining know-how.

 

[DionR]

I’m so glad you brought this thread back up. This is where I first saw your spindle and got me thinking about it myself. That rotor is big, which one is that?

That's the 14.2" Scat Pack rotor. It made sense to me because it was deeper than the Mustang rotor, .2" bigger in diameter and Mopar.

Not saying the Scat Pack setup was the best choice, only some of the reasons I decided to go down that road.

I’m curious, what did you base the spindle geometry on? Stick abody, FMJ?

I based the geometry on the F-Body spindle.

With the Mustang hub, does it push the track width out at all?

The S550 hub actually pulls the wheel mounting surface in about 7/16". I am sure I could push it out some and get it closer to stock, but it would probably make the spindle heavier and it already weights more than an F-Body spindle (if memory serves).

One you’ve mounted your spindle with an 18” wheel and the control arm, how much talker can you go?

I think I could push the UBJ up about 1", but dropping the lower balljoint becomes an issue with wheel clearance pretty fast. It's one of the reasons I (and others) have stepped up to 18" wheels, those can use much wider wheel and more offset. It's really the only way to fit a bigger tire under the front and keep it in the fender. So dropping the LBJ compared to the hub would start to reintroduce that problem pretty fast.

If I’m tracking with what you’ve done so far, we need to figure out rotor, caliper, and dial in ball joint pick ups?

In my mind, the next step would be to map the control arm mounting points and see how things look for that.

 

[DionR]

Good to see you back out. I remember your dart was one of the early Pro-touring ones.

Agreed. I remember his Dart too and am glad to see him active again.

I'm also interested in doing a custom spindle if we want to work together on this. I have engineering and machining know-how.

See new thread for discussion on fabricated spindle.

Fabricated A-Body spindle ideas and discussion

 

[swisswill]

Good to see you back out. I remember your dart was one of the early Pro-touring ones. I'm also interested in doing a custom spindle if we want to work together on this. I have engineering and machining know-how.

That's nice, thanks. Still working on my '69, just not much time with my business and kids. I thought about pillaging some parts for my '76 daily driver but decided against it. This spindle would be for the '76. Hopefully you, and others, jump in on the other thread. Would love to get others in on this to see how much we can improve the fronts of these things.