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09-13-2022, 03:45 PM
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CC Member
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Join Date: Jul 2021
Cobra Make, Engine: Era #634
Posts: 23
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Not Ranked
Speed Bleeders
Guys I am going to be changing the brake fluid out in 634. It has Sierra fronts and the Jag inboards. Does anyone happen to know what speed bleeders I need to order! There is a ton of them to choose from. Any help would be appreciated. Thanks.
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09-13-2022, 06:29 PM
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CC Member
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Join Date: May 2002
Location: SF, Bay Area,
CA
Cobra Make, Engine: SPF832, 466cid
Posts: 496
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Not Ranked
Motive Power Bleeder. The adapter is something you'll need to research based on ERA's master cylinder.
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09-14-2022, 06:41 AM
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CC Member
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Join Date: Aug 2006
Cobra Make, Engine: ERA FIA 2045, FFR 4068 Coupe sold, FFR 1816 roadster sold, FFR 3218 Roadster sold
Posts: 105
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Not Ranked
Quote:
Originally Posted by NROTOXIN
Motive Power Bleeder. The adapter is something you'll need to research based on ERA's master cylinder.
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I 2nd the Motive bleeder. If you have Girling reservoirs power bleeder won’t work. Cans can’t handle being pressurized. Even just a pound or two and they blow up. |
09-14-2022, 07:48 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,483
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Not Ranked
Go to post 30 in this old thread of mine. I believe the 3/8-24 are correct for the rear girdling. I have no idea for the Sierras.
Best approach to bleeding the brakes |
09-14-2022, 10:51 AM
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CC Member
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Join Date: Mar 2017
Cobra Make, Engine: Contemporary Classic Cobra CCX-3-3967
Posts: 72
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Not Ranked
I have a Contemporary with the Girling calipers. I used this kit:
https://mossmotors.com/remote-bleeder-hoses |
09-14-2022, 02:38 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,852
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Not Ranked
Quote:
Originally Posted by Lalmeida617
Guys I am going to be changing the brake fluid out in 634. It has Sierra fronts and the Jag inboards. Does anyone happen to know what speed bleeders I need to order! There is a ton of them to choose from. Any help would be appreciated. Thanks.
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According to this page the speed bleeders for GMC Sierra front calipers are M10-1.5 X 33mm:
https://shop.advanceautoparts.com/fi...crew,484-152.1)
__________________
Brian
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09-14-2022, 02:56 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
Originally Posted by cycleguy55
According to this page the speed bleeders for GMC Sierra front calipers are M10-1.5 X 33mm:
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No, the "Sierras" are really big front brakes that were made by the Sierra company. I have them on my car but I still bleed the brakes the same way I have for 50 years. It is not the GMC Sierra.  |
09-14-2022, 04:12 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
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09-14-2022, 04:19 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,852
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Not Ranked
Quote:
Originally Posted by patrickt
No, the "Sierras" are really big front brakes that were made by the Sierra company. I have them on my car but I still bleed the brakes the same way I have for 50 years. It is not the GMC Sierra. |
Dayamn. And Ford U.K. made a Sierra. Details matter. E.R.A., of course, uses GM calipers - but apparently not the ones from pickup trucks?
I can't find any listings for Sierra, other than brake pads. Are they no longer in business?
__________________
Brian
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09-14-2022, 04:23 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
Originally Posted by cycleguy55
I can't find any listings for Sierra, other than brake pads. Are they no longer in business?
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They are no longer in business. I think they started out as JFZ, which got eaten up by Sierra, which then went out of business. But, the Wilwood Rebuild Kit #130-2655 fits them, just in case anybody cares.  |
09-14-2022, 04:25 PM
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CC Member
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Join Date: Feb 2014
Location: White City,
SK
Cobra Make, Engine: West Coast, 460 CID
Posts: 2,852
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Not Ranked
Quote:
Originally Posted by patrickt
They are no longer in business. I think they started out as JFZ, which got eaten up by Sierra, which then went out of business. But, the Wilwood Rebuild Kit #130-2655 fits them, just in case anybody cares. |
Got it.
As far as the speed bleeders are concerned, I guess the OP will have to pull the bleeders, measure the thread size and pitch and go from there.
__________________
Brian
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09-14-2022, 04:29 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
I'm going to just shoot from the hip and bet that the speed bleeders that fit the Wilwood #120-11136 also fit the Sierras.
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09-14-2022, 04:32 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Speed Bleeder Brake Bleeder Screws (1/4"x28, Set/4), fits Wilwood Calipers
Code: SB1428
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09-14-2022, 04:34 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Or maybe... Wilwood Brakes 220-0627 Brake Bleeder Screw For Use With Wilwood Calipers; 1/8 Inch-27 Thread Size; Set Of 4.
which look to be the same...
WILWOOD 220-0627 Brake Bleed Kit Calipers w/ 1/8-27 Bushing & 1/4-28 Screws 4pk
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09-14-2022, 05:34 PM
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CC Member
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Join Date: Jul 2021
Cobra Make, Engine: Era #634
Posts: 23
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Not Ranked
I do not have Girling cans. So the pressure should not be an issue. Maybe Peter P. can get me the thread size. Btw is thread size all I need? Does the length matter much?
Last edited by Lalmeida617; 09-14-2022 at 05:46 PM..
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09-14-2022, 06:57 PM
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Half-Ass Member
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Join Date: Jun 2005
Cobra Make, Engine: ERA #732, 428FE (447 CID), TKO600, Solid Flat Tappet Cam, Tons of Aluminum
Posts: 21,897
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Not Ranked
Quote:
Originally Posted by Lalmeida617
I do not have Girling cans. So the pressure should not be an issue. Maybe Peter P. can get me the thread size. Btw is thread size all I need? Does the length matter much?
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Well you know you use a 1/4" bleeder wrench on them, so I don't see how it could be anything other than the SB1428. Here's a pic and chart of all your choices: Speed Bleeder Main Page |
09-15-2022, 11:59 AM
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Senior Club Cobra Member
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Join Date: Mar 2005
Location: Manchester,
NH
Cobra Make, Engine: AK1085 (302), HTM111 (427 Comp), CSX2375R (289 Comp) and Scratch 427 S/C
Posts: 18,804
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Not Ranked
I prefer Speed-Pad-Change......... SPC
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09-15-2022, 05:09 PM
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CC Member
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Join Date: Jul 2009
Cobra Make, Engine:
Posts: 411
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Not Ranked
Quote:
Originally Posted by cycleguy55
Got it.
As far as the speed bleeders are concerned, I guess the OP will have to pull the bleeders, measure the thread size and pitch and go from there.
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Yes, it's not unusual for calipers to have the bleeder hole drilled larger and tapped accordingly for a larger bleeder screw. Part of the re-build process, where the original screw is seized in and likley broken off. This is what I've got with my GM calipers. One bleed screw is larger than the other one. |
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