Front Disc conversion. Rear Drum brakes locking up

[CPPAaron]

No issues with the valves on these really... I would double check you have the correct wheel cylinders. If the bore is too large this could happen.

[nailz77]

No issues with the valves on these really... I would double check you have the correct wheel cylinders. If the bore is too large this could happen.

Hi Aaron,

Have 1" cylinders fitted to the rear.
Is it possible to have the wrong proportioning valve? Would a disc/disc valve cause this?

Thanks,
Dave

[CPPAaron]

Only if it had a 4 wheel disc prop valve. There should be a "2" stamped on the bottom of it and a rubber cap in the front.