WCM Ultralite S2K Brake Bleeding Advice

[powerbookguy]

hi all,

 

i want to change the brake fluid in my car as it has been sitting for awhile and is discolored. a few questions for those who may know:

 

1. does the car use synthetic or mineral based brake fluid? DOT rating? recommendations?

2. there are 8 bleed nipples, do they get bled one at a time or one caliper at a time (two nipples simultaneously)?

3. any hints as to where the clutch bleed nipple is located?

 

thanks in advance!

[WestTexasS2K]

Do not use silicon brake fluid! I recommend a quality racing fluid. I use Wilwood 600 degree fluid but Motol and others are good as well. If you use the car on the track much it will quickly boil standard brake fluid.

 

Now for the bleeding prodecure on the Ultralite. I try and remove all the old fluid in the resevoir then fill them with the fresh fluid. Start with the rear passenger side. You will start with the outside top bleed valve and bleed it until good clean fluid gets there. Then move to the inside top valve and just bleed the air out of it. Then you will move to the driver rear side and do the same thing. Next is the passenger front outside then inside. Then move to the driver front outside then inside. Keep an eye on the fluid as you go so that you dont get air in the master cylinders. You might have to repeat the whole process if you dont get a firm pedal.

 

If you have three people you can do the front passenger and the rear passenger at the same time since they are seperate MC. The balance bar can keep the pedal from going all the way down because the other cylinder will firm up before you get full travel.

[shiva]

I use ATE brake fluid in all my car. The great thing about those beside being very good bang for the buck is that they make 2 color of it.

 

Gold and Blue. So when flushing you know exactly when you have flushed the line when the liquid changes to the new color.

 

You just have to alternate between the two. I flush the whole lines each year and only bleed between each track events.

[powerbookguy]

thanks for the helpful advice!