Is this normal?

[avikm289]

I installed sti brembos on my 2012 wrx, along with dba 4000 slotted rotors, ss brake lines, a grimspeed master cylinder brace as well as a beak fluid flush with the blue dot 4 fluid a few days ago. I notice when I brake heavy on highway speeds the rear end wants to swing left and twists a lil. Is that normal? Will chassis bracing help or sway bars? Or did I do something wrong

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[Badler]

Not normal. New or used?

[avikm289]

Used brembos, powder coated and rebuilt before install

[Badler]

It sounds like the back right one isn't working.

[Bacon117]

Or the right front.

[chapstien]

Or an alignment issue.

[avikm289]

The brakes feel great, I bled them all and fluid came through both nozzles on each caliper. This only occurs when I almost literally slam the brakes at around 70is, but under regular braking it works beautiful. If I slam the brakes around 30-40 it doesn't kick out. When it kicks out the tail kicks out a lil to the left

[Badler]

Originally Posted by chapstien

Or an alignment issue.

Check this then.

[Bacon117]

Ok, so does the car want to turn to the left or turn to the right? "kicks out to the left" is a little ambiguous.

Check tire pressure.

If the car didn't do it, you replaced the brakes, now it does, chances are something went wrong with the installation. Did you bed the brakes properly?

[avikm289]

Talking about the alignment issue, I had one a few months show when my coilover camber was set too negative on the front left, as it ate alot of the inner wall of the tire, almost no grooves on the tread. I put that tire on the back left it just so happens. Maybe a connection?

[avikm289]

Originally Posted by Bacon117

Ok, so does the car want to turn to the left or turn to the right? "kicks out to the left" is a little ambiguous.

Check tire pressure.

If the car didn't do it, you replaced the brakes, now it does, chances are something went wrong with the installation. Did you bed the brakes properly?

I used that blue dot 4 fluid to bleed it. When I say kick out, it's like it wants to spin out but it's controllable if I let of the brakes. It's not agressivly violent, but you feel and see the bak swerve out a lik

[avikm289]

Btw thanks for the responce fellas

[avikm289]

Originally Posted by Bacon117

Ok, so does the car want to turn to the left or turn to the right? "kicks out to the left" is a little ambiguous.

Check tire pressure.

If the car didn't do it, you replaced the brakes, now it does, chances are something went wrong with the installation. Did you bed the brakes properly?

That's what I wanna see, I put bigger brakes, slotted rotors, steel lines and a master cylinder brace so braking is much batter than the old 2 piston front and 1 piston rear. First time with "fully" upgraded brakes

[Badler]

Are you sure one of them isn't seized? Did you rebuild them yourself?

[Bacon117]

Yes, it really sounds like one of the brakes isn't doing the same work as the others. It might be time to take it to a professional to diagnose...

[avikm289]

I gt the Machspeed rebuild kit and had a vendor on here rebuild them for me along with the powder coat. I sprayed brake cleaner on all calipers from the outside of the wheel so ill let it sit. If a pistons stuck how can I clear it? Fluid comes out all calipers on both ends, I bled them myself. Should I re-bleed?

[Badler]

Originally Posted by avikm289

I gt the Machspeed rebuild kit and had a vendor on here rebuild them for me along with the powder coat. I sprayed brake cleaner on all calipers from the outside of the wheel so ill let it sit. If a pistons stuck how can I clear it? Fluid comes out all calipers on both ends, I bled them myself. Should I re-bleed?

Bleeding isn't the problem. You can bleed a stuck caliper. Check the slide pins.

I hope you didn't really just blast your freshly PCd calipers with brake cleaner?

[avikm289]

I just did

[avikm289]

The front has brand new from dealer slider pins and retainer, but I re used the rears

[Badler]

Grease the rear slide pins. Doesn't take much.

Chances are you're fine with the cleaner, it's just not something I would do.

[avikm289]

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just for ref, this is my rear left tire. had a bad camber in the front and i swapped it to the back

[avikm289]

id buy you lunch if you were near me

[Badler]

It also had some bad toe to do that. That wouldn't cause what you're describing.

[avikm289]

I was hoping it would have I make it simpler, but modding is never simple. Ill grease up all caliper pins, and if it continues ill re-bleed

[avikm289]

Also when I tap the brakes to stop I hear like a clicking/knocking sound from the front right every tap