1990 4 Piston Wilwood Caliper Upgrade

[Snoranger]

Brakes help slow you down.

So do trees.

 

[pjtoledo]

That’s a TBD. I may need to find another solution for rotors or wheels. Trying to stay away from spacers if possible.

check out 98 Crown Vic front rotors.
12.5" x 1.18"(??) and correct bolt pattern.
the hat section is almost identical to 98+ Rangers

Edit: the width is 1.10"

 

[CYBERFUKD]

check out 98 Crown Vic front rotors.
12.5" x 1.18"(??) and correct bolt pattern.
the hat section is almost identical to 98+ Rangers

The more I think about this the more I like it. It's easy to find a Heavy Duty Crown Vic rotor and they are cheaper than the COBRA rotor I already purchased.

 

[CYBERFUKD]

So I purchased those rotors. Then I realized they are a little narrow, but they should work. after some searching I found this site. I'll be using this when arriving at a final rotor size and hat height.

https://www.brakepartsinc.com/raybestos/catalog-part-search.html

 

[pjtoledo]

if you're in the mood to spend big dollars try this guy

tceperformanceproducts.com

 

[CYBERFUKD]

if you're in the mood to spend big dollars try this guy

tceperformanceproducts.com

Thanks. I came across him. I didn’t go that route because I enjoy the process of DIY, don’t want to spend that much money, and we view rotors as wear parts. It would be too expensive in the long run. Thanks though.

I ordered the crown Vic rotors today and want to make a wooden bracket this weekend.

 

[Dirtman]

Thanks. I came across him. I didn’t go that route because I enjoy the process of DIY, don’t want to spend that much money, and we view rotors as wear parts. It would be too expensive in the long run. Thanks though.

I ordered the crown Vic rotors today and want to make a wooden bracket this weekend.

I advise against using wooden brake parts.

 

[CYBERFUKD]

I advise against using wooden brake parts.

what if I stain them to prevent corrosion?

 

[Dirtman]

I would just use teak or cedar.

 

[CYBERFUKD]

We are mocking up the fast back tonight. We've sheared a T55 bit trying to get out the last bed bolt. Bought a new T55 bit, only to shear the 1/2 to 3/8 reducer. Time to fight it with fire.

 

[CYBERFUKD]

Here’s a comparison of the rotors.
13” cobra
10.25” ranger
12.5” Crown Vic

holy hell the CV rotors I bought are heavy. Heavier than the Cobra I believe.

 

[don4331]

I would just use teak or cedar.

Bird's eye maple would be pretty; Cedar's pretty soft.

The advantage of Cobra rotors, is you can use your stock calipers. You need a spacer 0.880: thick, the difference in hat heights, 2.600-1.720 for Ranger versus '94 Cobra, with holes .860 c 2 c apart 13 versus 11.28 difference in radius. You can't do that with Crown Vic rotors - being nearly the same hat height, the spacers would be 0.010" thick and c 2 c of only .570 and therefore need to be made of unobtainum.

They make T55 bits for 1/2" drive.

 

[CYBERFUKD]

@pjtoledo you got me on the right path. Thank you

@don4331 I have the calipers in hand

My calipers call for a 11.75"-14.00" with a thickness range of 1.15"-1.35"

I really want to fit a 15" wheel on the truck. Here's a comparison of one I found and it's about 50% cheaper than the crown vic rotors I bought.


Crown Vic
Part Number
:
66744
Part Description
:
Disc Brake Rotor
Sub-Brand
:
Specialty - Street Performance
Grade Description
:
Specialty


Brake Rotor Casting Type
:
Vented
Brake Rotor Diameter, Outer
:
12.440 in / 315.976 mm
Brake Rotor Thickness, Discard
:
1.014 in / 25.756 mm
Brake Rotor Thickness, Nominal
:
1.105 in / 28.067 mm
Brake Rotor Type
:
Conventional
Center Hole Diameter, Minimum
:
2.826 in / 71.780 mm
Height, Overall
:
2.590 in / 65.786 mm
Performance Level
:
Standard Performance
Surface Finish
:
Plain
Packaged Weight
:
23.0000 lb

Part Number
:
7036R
Part Description
:
Disc Brake Rotor
Sub-Brand
:
R-Line
Grade Description
:
Better


Brake Rotor Casting Type
:
Vented
Brake Rotor Diameter, Outer
:
11.750 in / 298.450 mm
Brake Rotor Thickness, Discard
:
1.180 in / 29.972 mm
Brake Rotor Thickness, Nominal
:
1.245 in / 31.623 mm
Brake Rotor Type
:
Conventional
Center Hole Diameter, Minimum
:
3.252 in / 82.601 mm
Height, Overall
:
2.635 in / 66.929 mm
Performance Level
:
Standard Performance
Surface Finish
:
Plain
Packaged Weight
:
19.8000 lb
Wheel Bolt Circle Diameter
:
4.500 in / 114.300 mm
Wheel Bolt Hole Diameter, Maximum
:
0.653 in / 16.586 mm
Wheel Bolt Hole Diameter, Minimum
:
0.645 in / 16.383 mm
Wheel Bolt Holes, Primary
:
5
Country of Origin
:
CN

https://www.rockauto.com/en/moreinfo.php?pk=391222&jsn=714


Part Number
:
780540
Part Description
:
Disc Brake Rotor
Sub-Brand
:
Specialty - Truck
Grade Description
:
Specialty


Brake Rotor Casting Type
:
Vented
Brake Rotor Diameter, Outer
:
11.896 in / 302.158 mm
Brake Rotor Thickness, Discard
:
1.039 in / 26.391 mm
Brake Rotor Thickness, Nominal
:
1.102 in / 27.991 mm
Brake Rotor Type
:
Conventional
Center Hole Diameter, Maximum
:
2.837 in / 72.060 mm
Height, Overall
:
2.524 in / 64.110 mm
Performance Level
:
Standard Performance
Surface Finish
:
Plain
Packaged Weight
:
17.2000 lb
Wheel Bolt Circle Diameter
:
4.500 in / 114.300 mm
Wheel Bolt Hole Diameter, Maximum
:
0.656 in / 16.662 mm
Wheel Bolt Holes, Primary
:
5
Country of Origin
:
CN
VEHICLES

• Dodge Nitro
  • 2007-2011
    Front
• Jeep Liberty
  • 2008-2012
    Front

 

[pjtoledo]

12" or 12.2" is about the biggest rotor you can put inside a 15" wheel.


AND THAT DEPENDS ON THE SHAPE OF THE WHEELS BACK SIDE!!!!

 

[CYBERFUKD]

12" or 12.2" is about the biggest rotor you can put inside a 15" wheel.


AND THAT DEPENDS ON THE SHAPE OF THE WHEELS BACK SIDE!!!!View attachment 45616

Yep. That’s why I like the 11.9” rotor with this caliper.