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      10-04-2011, 11:23 AM   #1
Shosholoza
Shosholoza
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Drives: E92 M3
Join Date: Jul 2011
Location: Melbourne, Florida

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Changing Brake Pads and Fluid - Observations and a question...

I have a ChinMotorsports HDPE weekend coming up, yesterday I changed my Pads (to Performance Friction) and fluid to Motul RBF 600.

My Question:
I flushed nearly 3 quarts of RBF 600 through the system. I used a Motive Power Bleeder first @ 17psi, but the brake pedal was soft.
So I did it the old fashioned way, and there was some air in the system for the rear calipers. I thought I got it all out, but the pedal is still soft! Better, but much too soft.
The workshop manager at the steelership says it feels like there is still air in the system, he recommends bleeding again - 1/2 a quart from each caliper, and to also double check the pad alignment.
Any other input from forum members?

My observations:
1. Soft plastic jacking guides. Before you try to jack your car get two of these - BMW Jack Pad Adapter ES#251251 - my car has these very soft plastic guides that normal jackstands destroy!
After damaging 2 of them I fabricated some wooden blocks to put inside them for support and then used a hockey puck on the jack stand and floor jack. The If you have the normal jack stands, you will still need a hockey puck with a groove in it to put on the jackstand. If you have the jackstands with the round flat tops, you won't need the hockey pucks. PITA! They don't want us to pack the car up!

2. Lifting all 4 wheels on jackstands. Also a PITA! You will need four jackstand adapters, and four modified hockey pucks. You will also need four 12X2X18 inch pieces of wood to drive onto. This is because the car is too low to allow access to the front and rear jacking points for a 3 1/2 inch hydraulic racing jack.
You then raise the front wheels and insert the jackstands. You will have about 3 inches movement on the jack handle, its very tight.
For the rear you need an additional 4x4x4 block of wood to put on the jack to reach the differential jacking point without touching the aluminum cooling fins.
I tried all variations of trying to lift the car from one site and then the other. All variations result in the car seesawing on whatever two jackstands are supporting it. Not safe!
I have pics if anyone is interested
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