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GR86/BRZ brake flushing sequence

Brake System Design and Optimization

Relevant Module: Practical Skills > Brake Bleeding

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Discussion and questions related to the course Brake System Design and Optimization

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I have always flushed and bled brakes following the conventional wisdom of starting as far away as possible from the master cylinder and working your way back towards it (RR, LR, RF, LF). I recently got a ‘24 GR86, and found that the service manual tells you to start as close as possible to the master and work your way away from it (LF, RF, LR, RR). Why would they do it that way, and will anything bad happen if I do it the conventional way? Not sure which method to follow. Also, I have the factory Brmebos and I have not seen anywhere in the manual whether or not it matters if you flush/bleed the inboard pistons first or the outboard pistons first. I know some manufacturers specify a particular order, does it matter in my case?

I've done it both ways with success.

To be honest I usually start as far away as possible and work towards the MC and then go back around at the end and do one last bleed anyway just to be sure. So I'd recommend this if you were unsure.

If the calipers have bleed nipples on the inboard and outboard I'd recommend bleeding the outboard first.

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