Wilwood Spot Brake Callipers (Page 1/1)
Mike in Sydney MAR 08, 05:51 PM
Just wondering, has anyone used Wilwood spot callipers for parking brake applications? (https://www.wilwood.com/calipers/CaliperList?subname=Mech%20Spot) If so, is there a pattern for the mounting bracket available?
cyrus88 MAR 08, 07:27 PM
Yes, but I have no diagram. The spot caliper was part of the old Ryan/Helds brake kit that I have on my 88 Fiero
theogre MAR 09, 09:08 AM
If Fiero OE P-brake fails for any reason and use other methods to fix or do brake "upgrades..."
Any Spot Brake Calipers may not pass inspection in other countries more so if the inspection uses brake dyno.
Brake Dyno is Why for Fiero is hard to pass UK's MOT, German and other inspections.

While many claim these are "legal" in the US... often don't hold except on level ground on many cars and if car rolls while Parked and hit something or someone, expect needing a lawyer/barrister.

4Ref:
US FMVSS and Canada CMVSS rules for Parking Brakes only test a static car parked up and down a very small hill for X Minutes. And "worse" make easier to pass this weak test by allowing an even smaller hill for approx 1995 model year and later. (I think is covered in FMVSS 571.105 and 135) So many new cars and more barely pass this lame test and not very good at doing anything else like being an Emergency Brake for a moving vehicle.
In Fact, most w/ new Electric Parking Brakes will Not Engage when vehicle is moving!

In US states with Inspections...
NY and some others look at P-brake parts are there and "good" during inspection but don't actually test function.
Some others use various versions of "Brake Dyno" to test main/service brake function but not P-brake. Example: Some states uses a BD that you Drive On then Stop then read output of 4 load cells. Has problem because drive to fast or slow or stopped too soon or late and have many fails just for those errors.
Yet most states have rules for "Emergency Brakes" stopping a moving car that FMVSS never tested cars for this. Many Owners Manuals don't have Emergency Stopping Distance either like Fiero and other old OM have.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

[This message has been edited by theogre (edited 03-09-2023).]

zkhennings MAR 09, 02:35 PM
I have a set of the Wilwood Dynalite MC4 parking brake calipers, can be cable or hydraulic ebrake actuated. You need a left and right caliper.

WCF makes a kit to mount these (kit includes the calipers and E-Brake cables), you will need the Wilwood Universal Ebrake Cable if you make it yourself. I do not think there is an easy way to get them to work with the stock cables without chopping them up. Before I knew about the WCF kit, I was going to make my own brackets very similar to what they offer, they bolt to the hub bolts behind the rotor.

It says 84-87 only, it honestly may be cheaper to buy the full kit from them rather than make it yourself. I managed to get both calipers new for $220, Ebrake cables for $100, and it will be like $100 in materials for everything else, so I am saving like $160 and putting in hours of work and trial and error.

The spot calipers you listed are not very good, they are a pain to mount as you have to design your own slider system, the pads are tiny also, they are really a go-kart caliper, and you can buy go-kart calipers that look identical for way less money. The Dynalite MC4s have some real stopping power with a decent sized pad.

[This message has been edited by zkhennings (edited 03-09-2023).]

jdv MAR 09, 04:13 PM
Will was working on an alternative drum parking brake option at one time. It looked wall engineered.
zkhennings MAR 09, 04:49 PM

quote
Originally posted by jdv:

Will was working on an alternative drum parking brake option at one time. It looked wall engineered.



Yes, it is an entirely new rear knuckle with different location for the toe link and accommodated a bigger bearing as well.
Lambokit MAR 10, 08:56 AM
I have an even bigger dilemma as I have taken a full engine and transaxle from a DTS and moved it to the rear of the car. It's a kit car so I'm using the DTS axles and struts and brakes.
However now I have the large brake rotors 12.7" on the rear of my car. This was the front of the DTS so of course no parking brake exists. I will need to add a caliper and I found the ones for over a grand but am hoping I can do it cheaper.
I don't care if its manual/cable driven or hydraulic but if anyone has any suggestions, I'd appreciate it. Also, the best way to get larger brakes on the front Fiero spindles.