Re: '56 Patrician Brakes

Posted by BH On 2012/10/30 9:27:54

Glad you were able to pinpoint the pulling problem to a wheel cylinder piston and make do with a close substitute and a little machining. Still, you might wanna keep a new set of wheel cylinders on your watch list for future use.

Sounds like you've eliminated the vacuum tank as source of the hard pedal feel. I still have to wonder about the integrity of the rest of the vacuum supply system.

In fact, in view of your reports of engine performance, you might wanna test the vacuum advance unit on the distributor for leaks.

That aside, ambient air temp of 92^F is more than hot enough for fuel vaporization issues to rear their ugly head. Pinging also occurs with excessive engine temps; overly advanced timing will contribute to that. Yet, if vac advance and ignition timing prove to be OK, start looking at engine operating temps and the integrity of the fuel supply lines and hoses. Never hurts to check fuel pump output; even a new pump wouldn't eliminate a possibility of a clog or air leak somewhere.

Sounds like you're fighting battles on multiple fronts, but keep whittling away and keep us apprised. Things will eventually shape up.