Bleed brakes to caliper necessay? (Page 1/2)
branger SEP 12, 12:23 AM
Had some mechanical work done this week and my mechanic told me I needed a new calliper and ordered a new one... got me thinking.... is it leaking out of the bleeder screw.... do I really need a new calliper? And if so, can I change it out without bleeding the breaks? As you can tell, I am no mechanic, but man do I love my 2M6 Notchie. Any feedback is always appreciated.
Warlordsix SEP 12, 06:58 AM
Yes, you will have to bleed it.

Ernie

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'87 Fiero 4.9 5-speed

Dennis LaGrua SEP 12, 02:53 PM
You must bleed. Bleeding brakes is a simple one man task if you use Russell speed bleeders. Just replace the caliper bleed screws with the Russell speed bleeders by screwing them in until it stops (not too tight). Be careful not to cross thread or you will ruin the caliper. Then back off (loosen/open) about 1/2 turn. . Attach a clear plastic hose to the speed bleeder and put the end in a bottle. Starting with the right rear caliper pump the brake pedal about 7 or 8 times until you can see fluid flow out. Then tighten the bleeder and move on to the left rear, then right front and left front calipers checking that the master cylinder always has fluid in it after each wheel bleed. If done correctly this is a foolproof method.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

[This message has been edited by Dennis LaGrua (edited 09-13-2020).]

Patrick SEP 12, 04:39 PM

quote
Originally posted by Dennis LaGrua:

Starting with the left rear caliper pump the brake pedal about 7 or 8 times until you can see fluid flow out. Then tighten the bleeder and move on to the left rear...



Typo.

Start with left rear (which yes, is the furthest from the master), then right rear, right front and left front.
branger SEP 12, 11:07 PM
Thanks for the feedback! Caliper was leaking onto the pad on the inside.... definitely going to replace and bleed ASAP.
Dennis LaGrua SEP 13, 08:57 PM

quote
Originally posted by Patrick:

Typo.

Start with left rear (which yes, is the furthest from the master), then right rear, right front and left front.



I corrected my post to read start the bleed from the right rear. The brake lines to the right rear start at the master cylinder on the left side of the car, then run to the rear and cross over to the opposite (right ) side. I don't see how the left rear is farthest from the master cylinder. Am I missing something ? If so please explain.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

Gall757 SEP 13, 09:39 PM
Brake Bleed Order
Patrick SEP 13, 10:43 PM

quote
Originally posted by Dennis LaGrua:

I don't see how the left rear is farthest from the master cylinder. Am I missing something ?



Apparently!

Dennis, all this was explained to you in This thread. Why do you refuse to acknowledge that the Fiero's left rear caliper is the furthest from the master cylinder?

All the years you've worked on Fieros, and you've never observed the brake line routing to the back?


quote
Originally posted by Patrick:

...the Left Rear brake caliper is the furthest along the brake line from the master cylinder.






[This message has been edited by Patrick (edited 09-13-2020).]

theogre SEP 13, 11:55 PM
If a bleeder is leaking....

Could replace the bleeder itself... Bleeder's tip is only part to seal them and can go bad and leak. Take bleeder to local parts stores and match w/
If Caliper have problems too... Could try bleeder repair kit, over size bleeders, etc but Better to replace the whole thing because likely have other problems.

If one caliper is replace, you only need to bleed both on same axle.
Bleeder other axle "for fun" often makes more problems.

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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Dennis LaGrua SEP 14, 10:34 AM

quote
Originally posted by Patrick:
Dennis, all this was explained to you in This thread. Why do you refuse to acknowledge that the Fiero's left rear caliper is the furthest from the master cylinder?
All the years you've worked on Fieros, and you've never observed the brake line routing to the back?




We have some contradicting info here. From the factory service manual.



I'll try to trace the brake lines later today but either the factory manual or your picture is incorrect.

[This message has been edited by Dennis LaGrua (edited 09-14-2020).]