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this might be some coincidence but i got a wheel alignment done today and my front toe was completely out of whack, fixed it up and the brake squeel is gone??!!!

i am amazed by this, got rid of the annoying squeel and the car is handling better then ever!

either toe or castor will do this .... if your old castor rods are worn under braking they will move forward slighly and increase the squeeling noise.... i have DBA 4000s and bendix ultimates and had this issue... i while aligned it, put the red goo on and filed the edges of the pads down slightly, i then Bleed the front calipers! and its gone!! however it has come back every so slightly as my front right caster is rooted and moving forward a bit so check those out before going crazy with goo and new pads etc....... i know the skylines castor rods a prone to failing after a few years or hard driving ;)

wow the quietness was short lived, its back now,

perhaps the pad and/or rotor is glazed causing it to squeel again, might consider machining the rotor slightly and rubbing some layer off the pad and add some more goo and try again.

  • 1 year later...

Hey guys,

I trawled the net looking for solutions to my brake squeal. I found this thread, used some ideas from it as well as others - the solution I have worked 100% - I have now had zero squeal for close to 8 weeks, washed the rims, rain, brake dust, everything - all been perfect. The reason I was so determined to get rid of it was I am using the skyline as a daily now and sitting in crawling traffic everyday was disgusting.

Car: R33 GTS4 with GTST calipers and slotted rotors that got machined when putting in the new pads

Pads: New QFM HPX, no shims

Squeal: ONLY the front driver's side - loud as f*ck under low speed braking, otherwise everything was silent.

Solution:

1. Cleaned all the grooves of the slotted rotors as they were really built up

2. Ruffed up the pad face to bed it in again using a wire brush

3. Used a cheapo no name brake cleaner and sand paper to clean up all brake parts including the locking pins that hold calipers in and this funny looking thing: post-36975-0-63760800-1366934611_thumb.jpg (NOT the pistons or rubbers boots around them though)

4. I wanted to ensure this metal piece was in the correct shape so I took off the other one from the front passenger's wheel and noticed it was bent a little bit out of whack so bent it back.

5. When I first got my car serviced years and years ago someone must have used that disgusting red brake goo on my caliper's and it was all tacky and black on the pistons and boots, I sat there for a good 30 mins picking it off everywhere until it was all gone and gave the pistons a very light dry sand just to get back to metal.

5. I happened to have a spare front caliper in my garage that had an original set of shims - I took them off, gave them a massive sanding until they were spotless: post-36975-0-25699400-1366936011_thumb.jpg

6. I then got a tub of Penrite copper eze http://www.penriteoil.com.au/products.php?id_categ=15&id_products=108 post-36975-0-58950900-1366937764_thumb.jpg and applied a thick, even layer to the pistons, locking pins, shims and the back of the pads

7. Reassembled everything back together and bedded in the front brake pads again, it's been perfect ever since.

Hope this helps others.

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