Search found 23 matches

by Grayjay66
Thu Nov 07, 2019 6:23 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

For the first set of cylinder/Pistons, I tried both the used pads and the new pads and binding occurred with both. I did not do any filing of the pad edges during those trials. Zeus found nothing wrong with the binding set on their test stand. Zeus did say all along I needed to have Zeus on both whe...
by Grayjay66
Tue Nov 05, 2019 3:59 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

SUCCESS! All 4 cylinder/Pistons are now working as they should. On the one sticking, I loosened the 4 retaining bolts by 3 turns removed the retaining clip and pulled out the pad. I found a 1/16 square slight gouge at the fore and aft edge of the pad. I also found these pads are built around a circu...
by Grayjay66
Mon Nov 04, 2019 4:47 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

After traveling for several weeks was able to put the new set Zeus sent on the left front along with Zeus on the right front. So all Zeus now. Now right front are working fine, no heating. The left front inboard is binding causing cylinder housing, disc and hub to be very hot after a mile or so. Out...
by Grayjay66
Mon Sep 30, 2019 6:54 am
Forum: Series 1
Topic: Zeus Callipers
Replies: 10
Views: 4139
United States of America

Re: Zeus Callipers

Thanks , I should have mine back from Zeus soon. They could find no fault.
by Grayjay66
Mon Sep 30, 2019 6:52 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Zeus has tested the calipers and taken them apart with no faults found. They sent a set back, so should have them to try again soon.

Zeus has been really good to deal with. The Vendor in Ohio, I would not buy bubble gum from.
by Grayjay66
Sun Aug 25, 2019 1:00 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

It has been interesting in researching this problem. We all including me think there should not be a problem but there is. The most common presentation of the most common problems have all been checked and eliminated as to possible cause. The brakes are not fully releasing. My analogy is place a boo...
by Grayjay66
Sun Aug 25, 2019 8:00 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Ah but what is your guess as to what is the cause given the hydraulics are working with the Dunlops. And the Zeus open to nothing but atmospheric pressure does not result in a no drag fully released condition. The square seals are the only thing that cause the Zeus pistons to retract, so not much el...
by Grayjay66
Sat Aug 24, 2019 4:54 am
Forum: Series 1
Topic: Zeus Callipers
Replies: 10
Views: 4139
United States of America

Re: Zeus Callipers

These posts are several yrs old now but I have a current problem. My original Dunlops have a spring retraction and so when the brake is released the Pistons retract pulling the pads away from the disc via the "knob" that rides in the slot in the brake pad. I installed new 2 1/8 Zeus which force the ...
by Grayjay66
Sat Aug 24, 2019 4:36 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Would not recommend buying parts from Steubenville Ohio. Too many other reputable shops selling the same stuff. Really odd. We car people rely on these companies and in turn they make a living from our hobby/ interest. Why screw your customer? Over the years I've had several instances of parts not m...
by Grayjay66
Tue Aug 13, 2019 12:30 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

I thought the problem could be related to worn pads . I put new ones in with no resulting change. Pads remain in contact with the disc after brakes are applied and released. Using my trusty fish scale it looks like the friction can be overcome with 2-3 pounds constant force applied at the tire tread...
by Grayjay66
Wed Jul 31, 2019 9:48 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

I have been in contact with Zeus. They have been very responsive.

One last possibility was Dunlop spring return putting enough pressure to lock up Zeus. Eliminated this by disconnecting brake line inlet to Zeus side. Disc still locked up.

Returning set now for their eval.
by Grayjay66
Fri Jul 26, 2019 4:59 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Thank you for the reply. Irrespective of any other problems with master cyliner or flex lines it would seem opening the Zeus bleed nipple will release any hydraulic pressure on the Pistons and allow the wheel to turn. They remain stuck .. So the Zeus Pistons are sticking in an unpressured system but...
by Grayjay66
Thu Jul 25, 2019 7:35 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Spoke too soon. Vacuum leaks were not the fix I hoped for.

Fundamental question is why after opening the bleed nipple the brakes remain locked up, pistons not releasing force on pads?
by Grayjay66
Tue Jul 23, 2019 11:44 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

I redid all diagnostic checks and found this problem is NOT the zeus brakes.

Vacuum system has some serious problems and likely affecting the reaction valve.

Will post again when I've done fixes.
by Grayjay66
Sat Jul 13, 2019 5:02 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

I agree about not mixing components although in this case piston diameter and pad area are the same so not a big concern for a short test drive. I viewed it as a bit of an experiment to drive it with Zeus on one side and Dunlop on the other just to see if it did result in pull to one side or the oth...
by Grayjay66
Sat Jul 13, 2019 1:51 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Also to clarify, the Zeus are single piston 2 1/8th as are the original dunlops.
by Grayjay66
Sat Jul 13, 2019 1:22 pm
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

The Zeus piston not retracting on the left front while the dunlops are on the right front, has nothing to do with the piston manufacturer being mixed . I intended to change out both sides but was testing the Zeus before committing to the second pair, and was not concerned about the test drive as the...
by Grayjay66
Sat Jul 13, 2019 9:38 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Re: Zeus single pot. Pistons not retracting

Brand shiny new Zeus. Original du lops on right side. I bought a second pair of Zeus but now will not put on until this is resolved.
by Grayjay66
Sat Jul 13, 2019 9:22 am
Forum: Series 1
Topic: Zeus single pot. Pistons not retracting
Replies: 32
Views: 4386
United States of America

Zeus single pot. Pistons not retracting

66 fhc, I replaced my original front left calipers with Zeus single pot stainless leaving original Dunlop on right front. Simple bolt off and then Zeus bolt on . All seemed well. Drove around 6 miles and found Zeus side hub warm. Thinking I had a bearing problem, put the car up, took tire off and fo...
by Grayjay66
Wed Feb 13, 2019 6:35 am
Forum: Series 1
Topic: Engine chugs when power is taken off
Replies: 10
Views: 1036
United States of America

Re: Engine chugs when power is taken off

Mine 66 would start obviously misfiring and keep misfiring. Finally realized front float bowl ball bearing in the jet was sticking and front carb was starving. Pipe brushed and all well until A month ago started running rough again, this time it was a plugged front float carb intake screen. Although...