I posted a couple of days ago about the brakes on my MR2 Spider.
I had a problem with the front drivers side brake binding. The first inclination I had of it starting was that the car seemed to throb and the front of the car seemed to nod when driving at high speed (That's high speed for a MR2 not an FZS 600) I replaced all four discs, four sets of pads and both front calipers and everything was operating as I would expect whilst up on the jacks. But in reality the same thing was happening on the road drumming/throbbing noise and car still nodding or ducking very slightly at speed.
A quick internet search said that those symptoms can be caused by flexi brake lines disintegrating internally, apparently what can happen is a lamination or flap of rubber can come adrift, but when the brake is applied the force of the master cylinder can push the flap of rubber out of the way but when the lever or brake is released the flap of rubber can be drawn back down by the returning fluid and effectively create a valve that hinders the return of the fluid to the master cylinder causing the brake to bind a little and run hot, as the disc expands any high spots on the disc then contact the pads causing the throbbing/ drumming noise and causing the front of the car to slightly nod or duck, just a little but it was so annoying. The other problem is that brakes that are hot are not so effective and can certainly increase your stopping distance.
I have purchased a set of stainless steel braided hoses for the MR2, the same make (Cobra) as the ones I fitted to my FZS just recently
from[/size]trikersues On eBay
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Yamaha FZS600 FAZER Cobra Performance braided SS F&R brake line kit 1998-2003
( 371036798347 ) about £65-00 inc delivery
Good Luck sorting your brakes out. I hope this is useful and that I'm not sending you off on a wild goose chase.
[/size]I have yet to fit the braides to the MR2 Spider.
[/size]Just a thought.
[/size]Tommy[/c][/size][/font][/size]