%@#^&# Bleeder Screw
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kilrwail
- Posts: 1100
- Joined: Wed Mar 04, 2009 6:49 am
- Your car is a: 1978 Fiat 124 Sport Spider
- Location: Perth, Ontario
Re: %@#^&# Bleeder Screw
It was seeping up the centre. And it was really tight. Callipers are cheap and now I have new seals.
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Peter Brownhill
1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor
Peter Brownhill
1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor
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racydave
Re: %@#^&# Bleeder Screw
They are shallow and have a conical fit for the flair. Guess you gave it a good try!
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majicwrench
Re: %@#^&# Bleeder Screw
If you care to dink with it any more, the one I broke , drilled and rethreaded leaked as well, I loosened, then tightened the bleeder some 20 times to reform the "seat" that the bleeder seals against, and it quit leaking.
Keith
Keith
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kilrwail
- Posts: 1100
- Joined: Wed Mar 04, 2009 6:49 am
- Your car is a: 1978 Fiat 124 Sport Spider
- Location: Perth, Ontario
Re: %@#^&# Bleeder Screw
Postscript - after a great weekend of rallying and lapping.
The rear bleeders were seized as well. This time I removed the calipers and put them in my vise. After about 10 minutes of applying heat from the propane torch, alternating with more WD-40, they came free. It actually helped to rotate clockwise a tiny bit, then counterclockwise, when movement seemed imminent. Everything's cleaned up and reinstalled now. I wanted to bench bleed the master cylnder while it was still in the car and it took a lot of effort to loosen the lines, after removing the air cleaner and fuel filter. I didn't have any old Fiat connectors, so I bought a short piece of line at NAPA. Unfortunately, the Fiat threads are a coarser pitch than today's generic metric connectors. So I simply had to pump the pedal a lot to purge the air. Job is done - thanks for everyone's suggestions.
The rear bleeders were seized as well. This time I removed the calipers and put them in my vise. After about 10 minutes of applying heat from the propane torch, alternating with more WD-40, they came free. It actually helped to rotate clockwise a tiny bit, then counterclockwise, when movement seemed imminent. Everything's cleaned up and reinstalled now. I wanted to bench bleed the master cylnder while it was still in the car and it took a lot of effort to loosen the lines, after removing the air cleaner and fuel filter. I didn't have any old Fiat connectors, so I bought a short piece of line at NAPA. Unfortunately, the Fiat threads are a coarser pitch than today's generic metric connectors. So I simply had to pump the pedal a lot to purge the air. Job is done - thanks for everyone's suggestions.
_____________________________________________________________
Peter Brownhill
1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor
Peter Brownhill
1978 Fiat 124 Sport Spider - original owner
1977 Porsche 911S - track car
2022 Ram 4 x 4 - hauler
PCA National Instructor and Motorsport Safety Foundation Level 2 Instructor
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4babycar
Re: %@#^&# Bleeder Screw
From my recent experience (last week) with a broken bleed screw on a rear caliper..... To get the proper seat, the bleed screw needs a seat with a 90 degree angle. We drilled out the old screw with a 17/64ths bit that had been ground to a 90 degree point (by a local tool grinder - for FREE!), drilling to a depth ~.010" beyond the depth of the original seat depth (As measured on a good caliper). After drilling, cleaning out all of the remnants of the old screw we re-tapped with a 8mm x 1.25 tap. It works beautifully!