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Flip the O-Ring and see if that stops the leaking. Also, I bleed both my cup reservoirs at time by using two caps with a T fitting between them. I used the swivel fittings from Motiv.
Flip the O-Ring and see if that stops the leaking. Also, I bleed both my cup reservoirs at time by using two caps with a T fitting between them. I used the swivel fittings from Motiv.
Mike, did Pegasus part #3570 work for the 2019 718 Clubsport competition reservoir? The description on their web-site is a little confusing as to the actual size of this cap. Are to bringing your Clubsport to Indy Sept 10-12?
Mike, did Pegasus part #3570 work for the 2019 718 Clubsport competition reservoir? The description on their web-site is a little confusing as to the actual size of this cap. Are to bringing your Clubsport to Indy Sept 10-12?
I ordered the #3570 to make a pressure cap and I can confirm it fits the dual master cylinder/reservoir of the 718 CS and 991 Cup. I had to mess around with it to get the large black gasket to seal but I was able to build around 15psi until the gasket started to leak. That pressure seems to do the job.
I obtained 2 caps from PMNA and drilled/tapped each cap with 1/8" NPT to attached nylon barbed fittings using epoxy to seal the threads. O-tings and square section rings that I tried did not effectively seal the caps to the reservoirs when bleeding the brakes, so I cut the center out
of several of the molded seals that came with the caps to provide a leak free connection to the reservoirs.
I only hook up 1 cap when bleeding the brakes, doing the rears first, then changing the cap to the other reservoir to do the fronts. The only time I have pressurized both the front and rear reservoirs at the same time is when I bled the ABS system (after rebuilding the calipers) using the routine in the PIWIS, which calls for 30 psi pressure on the master cylinders. If you try this I strongly suggest you have a secondary means to keep the caps from blowing off the reservoirs, or you will shower your car with brake fluid. I leaned this the hard way several winters ago and had to wash my car in 30 deg weather to get the brake fluid off the paintwork. Since then I made up a fixture to secure the caps to the reservoirs to prevent a blow off at 30 psi.
I just picked up a bleeder cap from Demon Speed for the Motive Power Bleeder and plan to try it next week. Aside from having a separate front/rear master cylinders, is bleeding any different than on street 911s/Caymans? And which master cylinder is for the rears and which is for the fronts?
06-30-2021, 04:49 PM
