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Discussion Starter #1 (Edited)
I am replacing my master cylinder and flushing my brake system soon and i also want to replace my caliper bleeder screws (maybe with speed bleeders) to make future brake work easier. Does anyone know what the thread size and pitch is for the front and rear calipers on a 1991?
EDIT: also does anyone know a source for the rear caliper emergency brake springs? I replaced my calipers about 3 years ago with rebuilts and they are working fine but the springs seem like they got a little rusty and lost their rebound.
 

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Discussion Starter #2
I think i figured it out. a number of auto parts suppliers web sites are telling me that it is 7mm X 1.0mm Thread X 34mm overall length. Does this sound right?
 

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Alfa 164 brake speed bleeders Info

From ebay seller: Alfa Romeo 164 Brakes Only Speed Bleeders : eBay Motors (item 270579924679 end time Jun-15-10 10:44:56 PDT)


Two of the Speed Bleeders will be for your front brakes and two will be for your rear brakes.



The front brake bleeders are 8mm by 1.25. The Speed Bleeder number is: SB8125LL.



The rear brake bleeders are 7mm by 1.0. The Speed Bleeder number is: SB7100.

All Speed Bleeders are sold with black dust caps.



I also carry a set of Speed Bleeders for the 164 which includes the clutch Speed Bleeder in my Ebay store.








The Speed Bleeder is truly a one-person bleeder screw. Once installed, it becomes a permanent part of the brake system. When it is time to bleed your brakes, you loosen the Speed Bleeder ¼ to ½ turns and pump your brake pedal or brake lever. When the pedal or lever is depressed the pressure generated opens the check valve letting air and brake fluid out of the end of the Speed Bleeder. When you release the pedal or lever and it returns to the up position, the check valve closes and prevents any air from reentering the system through the Speed Bleeder. When bubble free fluid is evident you close the Speed Bleeder. In the closed position it works just like your stock bleeder screw and prevents any brake fluid from leaking out. That is all there is to bleeding your brakes. If at a later date you need to bleed your brakes, the patented thread sealing system makes it easy to open the bleeder screw to perform the bleeding operation. It is made of quality materials:

· Stainless steel spring

· Stainless steel ball

· Brass retainer

· The threads are roll formed. This process results in a stronger and smoother thread than one that is cut.

· The chamber for the ball and spring is precision reamed and the seat for the stainless steel ball is machined to exacting tolerances.

· Zinc chromate plating withstands a 30 hour salt spray.

· Patented thread sealing system seals the threads when the bleeding operation is performed, preventing air from being sucked back into the system.

· The pre-applied thread sealant also displaces air and moisture during thread engagement preventing rust...which usually results in rounded off corners on the hex or busted off bleeder screws making it necessary to replace the caliper or brake cylinder. The application of thread sealant thus makes it easy to loosen or remove the bleeder screw at any time.

· Simple to use.

· Saves time and money.

· Requires only one person to do.

· Perfect for racing where brake fluid is changed frequently.

· A must for the do-it-yourselfer

From a satisfied Alfa Romeo customer with his permission:

"Alfas can be difficult to bleed, and owners often complain about not being able to resolve a spongy pedal. It's particularly frustrating, because when the cars were built, automotive journalists praised Alfa's brakes as being some of the best they had tested, so we know we should be able to fix this. Alfa Romeo recommends bleeding one complete side of the car, both front and rear, simultaneously. It's difficult at best with two persons, and impossible with one. With the Speedbleeders, I was able, without a helper, to open both a front and rear bleeder, attach tubing and catch can to each, and bleed one full side. Repeat for the other side, and in about ten minutes I got firmer brakes than at any time in the six years I've owned my Spider. I never achieved this with a pressure bleeder. I'll never hesitate to install these again; they're worth every penny."



Color: The color of the Speed Bleeders will vary from silver to brass to copper. All Stainless Steel Speed Bleeders are silver in color.
 

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Steve, I didn't know you had an eBay Store! What's the address?
No I don't have one, this is just a ebay listing link I found on ebay I posted this info for this other Alfa nut also named Steve whom I met last September at IAP's /Customer Appreciation day. He and I had our dueling white 164's parked next to each other at the event.
 

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Discussion Starter #7
Yeah that was fun Steve. I have done alot of work to this car since last September and I am sure more will get done over the summer. I hope to be there again in September to show it off.
 

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Are the speed bleeder part numbers the same for a '95 164LS? I know the calipers are different from 91-93 but not sure about the bleeder screws.
 

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Yes the front 57mm caliper bleeders are the same as the 54mm front calipiers and rear caliper bleeders are the same as early rear ones, too.
 

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Used to use those thingys on my Alfas decades ago, but got out of the practice on the later cars. I think I used to have problems with them from rust or corrosion, getting clogged or something, so stopped using them. I spect they are much better these days.

Might think about using them again, just to make life easier to change the fluids more frequently than seems to happen. Nothing kills these systems faster than not changing the fluids to get rid of the absorbed water, esp it turns out, the clutch system. Had that problem with the LS clutch, the fluid evidently not being changed maybe since new before I bought it. Lots of gunk and corrosion internally.
 
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