Ford Mustang Forums banner

1 - 12 of 12 Posts

·
Registered
Joined
·
49 Posts
Discussion Starter #1
Ok so I have a 1988 saleen 5 lug street car/road race car makes around 600 rwhp, I would like to upgrade brakes to 4 piston all around what is best kit from experience ?
 

·
Jersey True Street Guy
Joined
·
3,195 Posts
I did exactly the upgrade you need on 89-425.

12" drum in hat parking brake S4 system in rear. 11" S4 front.

ImageUploadedByAutoGuide1457913430.687987.jpg

ImageUploadedByAutoGuide1457913447.894065.jpg

ImageUploadedByAutoGuide1457913470.522109.jpg

Will shoot you a pm.
 

·
Registered
Joined
·
5,422 Posts
Your 16" wheel size will limit your brake options. Brake torque is determined by rotor size and piston area. The larger the rotor, the better it is at shedding heat. A two piece rotor is better than a single piece rotor for heat control and deflection. Multi piston calipers allow a larger pad and do a better job of keeping the pad flat against the rotor for optimal braking than single pistons. So, you need to decide; 16" wheel with the brake limitations that imposes, or a new wheel designed to accept better brakes. Keep in mind that the tires actually stop the car and there aren't as many choices in 16" as say 18".
 

·
Registered
Joined
·
49 Posts
Discussion Starter #6
i was trying to keep 16 for more meaty tire i feel if i go 18 with the low pro tires they will blow off with the 6-700 rwhp
 

·
Registered
Joined
·
5,422 Posts
i was trying to keep 16 for more meaty tire i feel if i go 18 with the low pro tires they will blow off with the 6-700 rwhp
Understood - it's always a compromise. But with 6-700 on tap I think I'd want to stop the thing as a priority, and maybe feather the throttle to keep tire spin under control (or use a box for T/C). Also something to consider - what about the factory muscle coming out now: e.g., GT500, GT350, SRTs, ZO6s, etc.? Big power in those cars running 18-20" wheel/tire packages.
 

·
Registered
Joined
·
200 Posts
Very few road race cars actually make 600hp........and I don't see the point of that much power anyway. As you've noted, stopping is the bigger priority. I'd move to 17's at minimum and use a 13in 2 piece rotor if you track the car much at all. 18's and 14in rotors would be even better.

FWIW: I road race a spec class that limits us to 17 in wheels (13in rotors) and 260 RWHP. A buddy runs a performance shop and has a 760 RWHP Shelby. When he first started coming to the track it killed him how far he'd pull away from me on the straights yet due to his stock Brembo brakes, and my ability to go very deep, I'd actually beat him into the corners. You can cover more ground at speed at the end of the straight than you can gain with horsepower at the beginning.
 

·
Registered
Joined
·
49 Posts
Discussion Starter #9
I think I'll save up a lil more cash then get 17" rims so I can do the ss4 13" up front and back the car already has max grip box and for track and 33 spline axles with a true trac so no sense on rushing it thanks
 

·
Registered
Joined
·
49 Posts
Discussion Starter #10
I just ordered my 17" rims. i just looked into wilwood 6 piston for front. Its 1900 for the 6 piston but baers 4 piston is 2445 both 13" rotor. The rear wilwood 4 piston 13" rotor with parking 900 and baer is 1500. I need opinions which brand would you go for?
 

·
Registered
Joined
·
5,422 Posts
I just ordered my 17" rims. i just looked into wilwood 6 piston for front. Its 1900 for the 6 piston but baers 4 piston is 2445 both 13" rotor. The rear wilwood 4 piston 13" rotor with parking 900 and baer is 1500. I need opinions which brand would you go for?
Download the caliper templates from each and check against your selected wheels. That alone may dictate your brake choice. But you also need to consider the ability of the system to shed heat. I read that some of the 6/4 piston Wilwood kits are designed for street with occasional track use. If more is to be asked of the brakes, you may need to go with their road-race offerings.
 

·
Registered
Joined
·
49 Posts
Discussion Starter #12
yes thats what i was looking for a street brake and just to be able to handle track like 3-4 times a year when i do go
 
1 - 12 of 12 Posts
Top