Thanks for the replys y'all !!
In regards to the applying boost pressure theory, the brakes are still spongy at idle, engine off, Hg vacuum, and boost. I will test the one way valve and try adjusting the rod in the booster tomorrow. Will I have to wind it in or out ?
Damo.
>From: E Smith <[EMAIL PROTECTED]>
>Reply-To: [EMAIL PROTECTED]
>To: [EMAIL PROTECTED]
>Subject: RE: NEED BRAKE HELP FOR MY NEW FJ!!!
>Date: Sun, 06 Jul 2003 13:34:25 +1000
>
>Damo,
>You probably should have at least 13/16" and preferably 7/8" master cylinder
>for the Commy calipers, but I don't think this is your problem as if the
>system is bled properly the brakes should be the same as before with the
>increased volume.
>
>If the engine is an FJ20T Check you not applying boost pressure to your
>Booster diaphragm. Check your booster line one way valve is working
>correctly and that boost pressure is isolated from the booster line.
>
>Cheers,
>Feral Errol
>Get Serious tm
>
>
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED] Behalf Of damien cm
>Sent: Sunday, July 06, 2003 9:56 AM
>To: [EMAIL PROTECTED]
>Subject: NEED BRAKE HELP FOR MY NEW FJ!!!
>
>
>Morning List,
>
>I have just got my FJ1600 on the road and the brakes suck. The brakes are a
>180B booster, 3/4 inch master cylinder, recoconditioned Commodore calipers
>with verada discs, standard rear end with new wheel cylinders. It has the
>rear line going straight from the MC to a proportioning valve then to the
>rear brakes. The front line seperates at a junction and goes to the front
>brakes. The standard junction box is no longer there. The brakes have been
>like this when the car had a L series and the brakes were unreal.
>
>The brake pedal is not firm and only engages the brakes when it is about two
>thirds of the way down. We removed the master cylinder and inspected it, and
>it is fine. So the MC is good, the calipers are new, as are the wheel
>cylinders. What is going on? The only thing I can think of is that I need a
>larger master cylinder (maybe 7/8) to push that fluid around the vehicle
>because the brake lines are longer to accomadate the fitting of the FJ.
>
>The brake lines were made out of copper and go around under the radiator to
>the left caliper instead of around the back of the engine bay like in a
>standard 1600. Could these copper brake lines be flexing or expanding? Am I
>better of with 'bundy tubing'?
>
>Any advice appreciated as I keep spending money on the incorrect
>diagnosis!!!
>
>Check Ya,
>
>Damo.
>
>
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