Different brake boosters / power boosters

by **Christer** » 09 Mar 2005 13:31

I have got two brake boosters in my garage. Both of them has NOT got a stamped part number. A bit annoying to say the least. Paul Herd´s Interchange manual isn´t much of a help if the parts miss the part numbers. I thought I would do something about this and start a picture gallery of different brake boosters. Hope it can give some guidence to you message board readers.... (Search: Booster )

by **Christer** » 09 Mar 2005 13:32

# 3744472 according to an ebay seller.

by **Christer** » 09 Mar 2005 13:35

# 3580152

by **Christer** » 04 May 2005 5:25

NOS MOPar #3579272, Midland Ross #C4600MC power brake booster for all 1971, 1972, and 1973 Plymouth Cuda, Barracuda, GTX, Road Runner, Satellite; Dodge Charger, Coronet, Super Bee, and R/T; B Body Cars with power DISC brakes.

by **christer** » 11 Dec 2006 20:27

The part number on the metal tag attached to the unit is 3580263.

by **christer** » 11 Dec 2006 20:29

Mopar Pat. No. 3106873, 3110031 and 3083698 stamped on part.

by **Eddie** » 15 Dec 2006 17:55

I dont know how much "faith" anyone has in mr. Galen Govier, but I thought I would pass this bit of information to my fellow Challenger owners as a service to the Challenger itself. I asked Mr. Govier about the Restoration Guide for Challengers written by Paul Herd as a self help to me on my resto of my Challenger and a helpful re-assembly guide. His answer was to "throw that piece of garbage away,its all wrong"!

by **christer** » 15 Dec 2006 20:45

airfuelEddie wrote:I dont know how much "faith" anyone has in mr. Galen Govier, but I thought I would pass this bit of information to my fellow Challenger owners as a service to the Challenger itself. I asked Mr. Govier about the Restoration Guide for Challengers written by Paul Herd as a self help to me on my resto of my Challenger and a helpful re-assembly guide. His answer was to "throw that piece of garbage away,its all wrong"!

I guess the truth is somewhere in the middle, some parts of the book is correct and some parts are incorrect. Yes, I agree that there are too many errors in his book but I think that the book still is worth having.

As for the pic´s above: I don´t claim that all the part numbers are correct and I don´t have time to check them either. I still hope that they will be of help when it comes to brake booster part numbers. I think it is a djungle myself. I have two boosters in my garage and none of them has a part number on them. I have checked everywhere. I think the part number use to be on a small tag who often is missing, and giving us a hard time.

by **christer** » 20 Jan 2007 20:46

# 3461287 that fits 1971 Charger, Coronet, Cuda, Challenger, Satellite with power drum brakes

by **christer** » 10 Nov 2007 12:23

NOS power disc brake booster for a one year only 1970 E-body. Correct by application for the 340 340+6 383 440 440+6 Cuda and Challenger except the 426 HEMI. Part# stamped on the booster is 18268, right beside the penstar. Other stampings are Bendix, 8550 PAT NOS 3106873 3110031 3083698. In the one picture you can see the booster still retains the plastic dust boot and a stamped metal tag, where the master cylinder would be bolted on. The metal tag is stamped E9 272 C 8616.

by **christer** » 10 Nov 2007 12:27

1969 CHARGER BRAKE BOOSTER. This was removed from a 69 H.P BIG BLOCK CHARGER w/ disc brakes. It is the original MIDLAND ROSS booster used on these cars.

by **christer** » 10 Nov 2007 12:30

Original Chrysler Hemi Power Brake Booster (less linkage). This booster has the Large mounting studs on the back side (Not the smaller ones like on non-hemi boosters). Includes the original Bendix Disc Brake master cylinder.

by **christer** » 10 Nov 2007 12:32

1 Bendix brake booster assembly used on all 1968-70 Plymouth and Dodge B-body models with front disc brakes. GTX, Road Runner, Charger, Coronet R/T, SuperBee. Factory part#s 2883056, 2944270, 2881866

by **christer** » 10 Nov 2007 12:34

Bendix/Mopar power brake booster for 70 E-Body Mopars with disc brakes. Additional Mopar reference numbers are 2944486 and 2944490.

by **Jon** » 10 Nov 2007 15:11

That last one looks like mine, it is original as far as I know. I plan to rebuild it soon. If someone has any advice please let me know. Looks kinda scary just getting the thing out of the car.

by **christer** » 10 Nov 2007 16:19

Jon wrote:That last one looks like mine, it is original as far as I know. I plan to rebuild it soon. If someone has any advice please let me know. Looks kinda scary just getting the thing out of the car.

I have searched for brake booster replacement parts but they appear to be VERY rare. Or am I looking in the wrong places? I don´t know. I think I have seen a couple of repair kits for sale but that is about it.

The more "mechanic-friendly" boosters separates just by loosing one bolt. They seems far more easy to deal with compared to the one´s that are welded together.

by **Jon** » 11 Nov 2007 5:17

I think mine is the welded together unit. So one would bend the flanges back, pry it open, and hope for a good seal upon reassembly.

by **christer** » 11 Nov 2007 12:03

I wish you good luck, Jon. Hopefully you will fix it. It feels like it all would end up with a basket case if I gave it a try myself. :s008:

What is the problem with your booster then? Not holding vacuum I suppose? One of my cars previous owners had replaced the bellcrank with a home-made rod :s001:

. I am pretty sure that is why my booster started to leak. One of the rubber sealings had become cracked due to this home-made rod and it all caused an annoying whistling sound inside the coupé (and a not so good idle...).

I found two links on the net that might be useful:
http://www.mbmbrakeboosters.com/index.p ... &Itemid=86
http://www.piratejack.net/troubleshooting/Main.html

by **Eddie** » 11 Nov 2007 13:21

Christer, are you seeking a place to restore your booster? I havent used these guys myself but have heard many good things about their ability to repair. White Post Restorations. I will seek a link for you. www.whitepost.com

by **Jon** » 11 Nov 2007 15:38

christer wrote:I wish you good luck, Jon. Hopefully you will fix it. It feels like it all would end up with a basket case if I gave it a try myself.

What is the problem with your booster then? Not holding vacuum I suppose? One of my cars previous owners had replaced the bellcrank with a home-made rod . I am pretty sure that is why my booster started to leak. One of the rubber sealings had become cracked due to this home-made rod and it all caused an annoying whistling sound inside the coupé (and a not so good idle...).

I found two links on the net that might be useful:
http://www.mbmbrakeboosters.com/index.p ... &Itemid=86
http://www.piratejack.net/troubleshooting/Main.html

I don't think it has a leak, just figured after 38 years the seals might need replacing.

My goal is to take a trip over to the Big Sur coast soon and there's some pretty nasty grades with shear cliffs on the side of the road. (I get nervous just standing next to them). Been working on the rest of the braking system so the booster is the last thing left to tackle.

Thanks for the info Chris I checked out one of the sites and here is a FAQ:

CanI rebuild my own booster?

This is not a good idea. There are many parts inside the booster that will require special tools to assemble and re assemble.

Guess that answers my question about rebuilding it myself.

by **christer** » 11 Nov 2007 17:10

Yeah, I think it is a big risk that you only will end up with a dis-assembled booster.

A personal opinion is that I would use the power booster without any doubts as long as it works properly. If it starts leaking while driving, you will just have to push the brake pedal a little bit harder. If it gets a major leak (A very rare situation?), you will have to push the brake very hard but you will still have working brakes. In other words: I wouln´t worry unless there is something obvious fault on it. I might be wrong though. Any other opinions? Safety systems like the brake system is nothing to play with.

by **dave-r** » 11 Nov 2007 17:31

I am with you there Christer. It sounds like a drastic operation for possibly zero gain.

by **christer** » 11 Nov 2007 18:10

airfuelEddie wrote:Christer, are you seeking a place to restore your booster? I havent used these guys myself but have heard many good things about their ability to repair. White Post Restorations. I will seek a link for you. www.whitepost.com

Thanks Eddie! :thumbsup:

The link does not seem to be working right now but I will try it again later.

by **Jon** » 11 Nov 2007 18:24

If it ain't broke don't fix it, so I'll leave well enough alone.

by **472 R/T SE** » 16 Nov 2007 0:18

Not just because he's local, but this guy get's lots of work from the big name restorers' because of his quality work. He did mine for less than a bill a couple years ago and even plated it the correct gold.

Not a real flashy webpage but it's not needed IMO. http://boosterdeweyexchange.com/

by **christer** » 17 Jun 2008 19:00

48 wrote:NOS MOPar #3579272, Midland Ross #C4600MC power brake booster for all 1971, 1972, and 1973 Plymouth Cuda, Barracuda, GTX, Road Runner, Satellite; Dodge Charger, Coronet, Super Bee, and R/T; B Body Cars with power DISC brakes.

Here are some more pic´s of the same booster. Enjoy, 48! :s018:

by **rz9k67** » 29 Jul 2008 0:01

Midland ross style boosters come right apart, remove the band around the middle. You can try to get the main exterior gasket from various parts stores directly. Most of the rest is straight forward.

seal them well with a silcon or heavy grease to stop the pin hole leakages. I've had good luck

Bendix ones are a bit harder to get apart.

But if its junk, try rebuilding it. Nothing magic about them, big vacuum chamber acts as a 'motor' to help push the brakes.

Good luck.

by **airforce_gunner77** » 09 Jun 2012 0:22

Im trying to put a power brake booster in my 1973, and i baught the booster and my car did not have a booster originally, but i want one.. im missing a part that i see on some of the boosters in the pics... its the part that hooks on the booster and then hooks on the brake lever... whats that part call and where can i get it

by **airforce_gunner77** » 09 Jun 2012 0:24

christer wrote:Bendix/Mopar power brake booster for 70 E-Body Mopars with disc brakes. Additional Mopar reference numbers are 2944486 and 2944490.

what is that part called that hooks to the booster that hooks to the pedal lever... that is what im missing on my new booster i baught,,my car did not originally have a brake booster on it so im needing that piece to hook up my booster to the brake pedal

by **dave-r** » 09 Jun 2012 10:12

I think the part you are refering to is the "bell crank". Search for that term on here and you should find a few photos and diagrams.

The power booser mounted higher up on the bulkhead than the manual brake master cylinder. So you need this part for the boster to link up with the pedal.

Re: Different brake boosters / power boosters

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Re: Different brake boosters / power boosters