Guys I Need Brake Booster help for 68 Charger

[Phillips68charger]

So after many yrs, I'm finally getting to the point of replacing my brakes on the 68 Charger. It's kept me from driving the car for way too long. I believe master cylinder - Booster & lines are original because of how rusted they all are & doesn't look like anything has ever been replaced. Although it's a front disc /drum rear car, I have no documentation or can tell from the fender tag if it's factory front disc. I've owned the Charger for 14 yrs & it's been my impression since the day I bought it that it was factory.

Well, I'm very confused & hoping some of you guys with experience can help. I had been reading very old post on the brake booster subject on here but nothing up to date.
Well a couple months ago, I ordered the bendix style brake booster/master cylinder kit from Classic Industries which is MBM brand & it's for disc/drum. Its just been in a box sitting. Only recently when I started to take things off, that I noticed my boosters vacuum Check valve had 2 nipples on the side instead of the 1 nipple on the new booster.
I knew the new booster looked different but I just thought it was because it was a reproduction. It was then that I read post on here with owners discussing between the 2 types, midland ross & bendix. I called Steve Brown at MBM & he said I was his first customer in the 10 yrs he'd been selling the booster to call him with my problem. He had no answer. I told him 1 hose went to the engine manifold port & the other went to the vacuum canister underneath the battery tray for the headlight doors.

My Questions are this & to verify please.
1. Is my brake booster indeed a midland ross?

2. Was midland ross & bendix styles both used for disc/drum 68 chargers from factory?

3.Could I or should I use the bendix booster I bought to replace my original?

4.Does the check valve nipple difference matter that i could I use an splitter adapter for the 1 nipple to have 2?

I know theramman & the other guy out in Oregon rebuilds boosters. I was thinking maybe that's what I needed to do even though there's a month or longer turnaround.
Anyone that can help me out, I'd appreciate it greatly!

Photo links to my Google, it won't let me load here.
My original booster.

https://photos.app.goo.gl/L9kKteNGgxqth8qE7

https://photos.app.goo.gl/HNtEjTGGKAzFDQfz9

https://photos.app.goo.gl/yB9g2GD37UgGpsuC9

The new bendix.

https://photos.app.goo.gl/ueuBTqHqR7kzJ2SeA

[darbgnik]

I'm no expert, but your old booster is not a Bendix, not sure what it is.

I also don't think you need a double nipple on the booster, you could add a vacuum tee between the booster and the intake for the headlights. The check valve at the booster is important for maintaining vacuum for braking, but it isn't important to store vacuum for the headlights.....

[Phillips68charger]

 I would say mine is a midland. I like to stay original, when I can on things that matter & didn't know even if I kept this new bendix if the pushrod would be too long for it to hook up or what else. I'm not a brake guy, well not a mechanic either but going into this i just thought I could save money on labor & do it. First thing I thought about was adding a tee to the check valve but I didn't know if each line needed it's own port for a reason.

So on the cars that had bendix boosters with the 1 nipple on the side of the check valve, where did the vacuum canister hose hook up to?  To a tee adapter at the engine manifold port?

[375instroke]

The fitting on the intake should have one large nipple out the top for the brakes, and one on the side for the headlights.  Something like this:
https://www.classicindustries.com/product/mp700103.html

[John_Kunkel]

The double nipple check valve is for cruise control; often, when there is no cruise control, the second nipple has a rubber cap to plug it off.

[Phillips68charger]

My manifold vacuum hose fitting has 3 side ports total & are all capped. 2 on 1 side  & another port on the other side. It had an A. C.  The main hose stem in the middle goes to my brake booster.

https://photos.app.goo.gl/EoybwZJWcHHYFd457

So can you use one of those ports for the headlight vacuum? Guess I can always try it out to see if it's the same size.

[tan top]

Hello & welcome  P68C    

never seen that booster factory fitted on any 68 -70 B-Bodies before .

all 68-70 Chargers with Disc  Brakes used the max assist Bendix booster
& also  Hemi with power drums .

all 68 -70 Chargers with Power Drums except Hemi ( see above )  used the  Midland Ross booster

68 -74 A body mopars  used 2 types of boosters ( well ive seen two types ) the midland Ross  for discs (  A body lighter car )  & what looks like the one in your picture too .
if your  headlamp vacuum hoses are oem the vacuum can hose will prolly fit to the one the green arrow is pointing too, thats the one i use on mine

IMO would get the matching  master cylinder & go through the brakes  to check see if everything there  proportioning valve etc


hope you dont mind , ive posted your pictures   

[moparstuart]

 

[Phillips68charger]

Hello & welcome  P68C    

never seen that booster factory fitted on any 68 -70 B-Bodies before .

all 68-70 Chargers with Disc  Brakes used the max assist Bendix booster
& also  Hemi with power drums .

all 68 -70 Chargers with Power Drums except Hemi ( see above )  used the  Midland Ross booster

68 -74 A body mopars  used 2 types of boosters ( well ive seen two types ) the midland Ross  for discs (  A body lighter car )  & what looks like the one in your picture too .
if your  headlamp vacuum hoses are oem the vacuum can hose will prolly fit to the one the green arrow is pointing too, thats the one i use on mine

IMO would get the matching  master cylinder & go through the brakes  to check see if everything there  proportioning valve etc


hope you dont mind , ive posted your pictures  

Thanks for chiming in & thanks for posting the photos. I was trying to find a photo resizer so I could upload them without a link. It's been awhile since I've been on a forum & had to do those kind of things.Anyway..

So I do have the matching master cylinder for the bendix booster. I bought the kit from classic industries part # MB850300 66-70 b body. Mbm is who carries them.
Even if I thought I wasn't going to use the booster I was going to keep the master cylinder cuz it's exactly what's on the car now. The confusing thing is, from scouring the internet, & from different forum posts, I've seen photos of midland boosters that said they came off a front disc b body charger, even a 69.

I don't want to rebuild my booster if it's not for front disc brakes. I'm drawing conspiracies thinking maybe someone in the past changed it from front drum to disc but left the original drum booster. In that case I'll use this new bendix.Im just hoping that if I install this bendix, it'll be a easy interchange with no modifying besides the firewall plate.  And that port you pointed out, that's what I was thinking.

[bakerhillpins]

The confusing thing is, from scouring the internet, & from different forum posts, I've seen photos of midland boosters that said they came off a front disc b body charger, even a 69.

I'm drawing conspiracies thinking maybe someone in the past changed it from front drum to disc but left the original drum booster.

Im just hoping that if I install this bendix, it'll be a easy interchange with no modifying besides the firewall plate.

Lots of images out on the internet that are misleading, but the guys here know what they're talking about.

If you're wondering about OEM setup and don't have the tag/broadcast sheet.. Many times when folks change drums out to front disc they fail to add the proportioning valve, so look for that on the inside of the driver frame rail below the booster.

If you find that the firewall plate is wrong just order a replacement no? Seems like the easier route than modifying an incorrect one.

[lloyd3]

Never seen a booster like that one before (not that I can ever say that I was looking that closely until now).  Mine is identical to the version that Moparstuart has posted, which I always assumed was the Bendix version(?). I am fairly confident that mine is original to the car (as it still sports the factory-original power-assisted drum brake system). When the car was re-done back in the  2008-2013 timeframe, that was one of the critical components of the rebuild (as poor brake-performance clearly contributed to the accident that damaged the front of the car). A reportedly-local Denver entity did the rebuild (and his reputation preceded him as being highly-competent and also being highly-unpleasant to deal with [most folks just left the cores in a box outside of his shop with their names on the part]). Not sure if he's even still around (both he and the gentleman re-doing the car were fairly old and unhealthy even then (the byproduct of a lifetime of exposure to environmentally hazardous materials?).  



It's been several years sine that re-do and it seems to not stop now with the efficiency it had immediately after the restoration. Makes me wonder just how long a re-built master brake booster actually lasts? I can't imagine that the few miles I've put on it since has contributed that much wear and tear and... I suspect that my perception is affected by my day-to-day driving of much-newer vehicles (with modern 4-wheel disc systems). I certainly find myself using the transmission regularly (by downshifting through the gears) to assist in the stopping process.

So...is mine the Bendix or the Midland-Ross type of system?

[tan top]

Hello & welcome  P68C    

never seen that booster factory fitted on any 68 -70 B-Bodies before .

all 68-70 Chargers with Disc  Brakes used the max assist Bendix booster
& also  Hemi with power drums .

all 68 -70 Chargers with Power Drums except Hemi ( see above )  used the  Midland Ross booster

68 -74 A body mopars  used 2 types of boosters ( well ive seen two types ) the midland Ross  for discs (  A body lighter car )  & what looks like the one in your picture too .
if your  headlamp vacuum hoses are oem the vacuum can hose will prolly fit to the one the green arrow is pointing too, thats the one i use on mine

IMO would get the matching  master cylinder & go through the brakes  to check see if everything there  proportioning valve etc


hope you dont mind , ive posted your pictures  

Thanks for chiming in & thanks for posting the photos. I was trying to find a photo resizer so I could upload them without a link. It's been awhile since I've been on a forum & had to do those kind of things.Anyway..

So I do have the matching master cylinder for the bendix booster. I bought the kit from classic industries part # MB850300 66-70 b body. Mbm is who carries them.
Even if I thought I wasn't going to use the booster I was going to keep the master cylinder cuz it's exactly what's on the car now. The confusing thing is, from scouring the internet, & from different forum posts, I've seen photos of midland boosters that said they came off a front disc b body charger, even a 69.

I don't want to rebuild my booster if it's not for front disc brakes. I'm drawing conspiracies thinking maybe someone in the past changed it from front drum to disc but left the original drum booster. In that case I'll use this new bendix.Im just hoping that if I install this bendix, it'll be a easy interchange with no modifying besides the firewall plate.  And that port you pointed out, that's what I was thinking.

have you got a fender tag / broadcast sheet  ? look for the  codes D9 & H1 for 1968  &   B41  &  B51  for 1969 & 70!
H1 or B51 code on its own is Power Brakes ie power drums .
D9 or  B41 code is Disc Brakes
you will not see a D9 or B41  with out a H1 or B51 code on a 68 -70  B-bodies .

what type of calipers have you got ? single piston slider  or  4 piston calipers ?

there is / are lots of conflicting information on internet , one guy is convinced  its black  the other guy swears its white  etc  also there are lots of  variations on mopar boosters that can be cobbled together to work at varying levels of success . that coupled together with the aftermarket setups.
you wont see a factory  69 - B-body  disc brake car with out a bendix booster .
but your see a A-body with a Midland ross booster . as mentioned A body lighter than a B & C Body .
68 -69 -B-Body power drums  Midland ross booster  , disc brakes  Bendix booster.
ive seen on a number of supposedly unrestored 70 B-bodies a 3rd style of booster , know idea what make of booster ... but seen it  power drum &  disc cars , my thinking  maybe the max assist bendix  was  substituted for some reason . but  all hemi cars still had the max assist Bendix  power booster  for  drums & discs . maybe the 70 charger mob will know more.  maybe a later style midland ross ....

   
when i saw Stuart post a picture of his awesome unrestored charger , i remembered  that  third style  booster is got !  i had forgot about ! know idea  seen that style a few times of 69 Chargers  , ive seen this style on a 67  C-body .... also i even think  remember that road test magazine on the 22inch pre production 69 Daytona , the engine bay shot shows that booster ! well its not the midland ross booster we recognize thats normally fitted

Never seen a booster like that one before (not that I can ever say that was looking that closely until now).  Mine is identical to the version that Moparstuart has posted, which I always assumed was the Bendix version(?). I am fairly confident that mine is original to the car (as it still sports the factory-original power-assisted drum brake system). When the car was re-done back in the  2008-2013 timeframe, that was one of the critical components of the rebuild (as poor brake-performance clearly contributed to the accident that damaged the front of the car). A reportedly-local Denver entity did the rebuild (and his reputation preceded him as being highly-0competent and also being highly-unpleasant to deal with [most folks just left the cores in a box outside of his shop with their names on the part]). Not sure if he's even still around (both he and the gentleman re-doing the car were fairly old and unhealthy even then (the byproduct of a lifetime of exposure to environmentally hazardous materials?).  



It's been several years sine that re-do and it seems to not stop now with the efficiency it had immediately after the restoration. Makes me wonder just how long a re-built master brake booster actually lasts? I can't imagine that the few miles I've put on it since has contributed that much wear and tear and... I suspect that my perception is affected by my day-to-day driving of much-newer vehicles (with modern 4-wheel disc systems). I certainly find myself using the transmission regularly (by downshifting through the gears) to assist in the stopping process.

So...is mine the Bendix or the Midland-Ross type of system?

lloyed3 has one of those boosters too , well kind of contradicts what ive been talking about      maybe start a poll on boosters  what style does your charger have originally !but then its open to different owners interpreting exactly what they have , a wrong / different  or over the counter
replacement mopar from a different vender / manufacturer / superseded  part fitted 40 years ago could well look original to the car today  

i'm far from an expert & i await to be corrected on any of the above  

this guy knows his stuff  of mopar factory hardware

 https://www.youtube.com/watch?v=_plCNUy0mi0

https://www.youtube.com/watch?v=UgpL97J6RoY

https://www.youtube.com/watch?v=Nq1nhLi-6BE

https://www.youtube.com/watch?v=9RFIv6Vw06U

https://www.youtube.com/channel/UC4iUxmhfXR7Um-d38akbU0w/videos

[Phillips68charger]

To me, your booster looks like mine. From what I've learned, the midland ross boosters came apart. There's a band going around mid way as where the Bendix is made into 1 piece plus they look different. The bendix has a more trapezoid look. Even the reproductions say that.

I'm aware of the proportionating valve. I had to wait until it stopped raining for a few days to go out there and jack up the car to try to find it. I took off my 2 of wheels off too & took pictures. I just saw one valve under front fender that master cylinder lines & all other lines are connected to including brake warning wire. I'll leave a photo link here.

https://photos.app.goo.gl/fW8N5pBJF2vQunEh7

I tell you what, I never knew going into this, there was going to be this much confusion. I was trying to be simple & just get my car back on the road with good brakes.
Now, I'm contemplating sending this bendix back to classic & just buying a whole new disc brake kit. Front & Rear.  It's what I really wanted, it's just more expensive. But I'll probably need to hire a brake shop if I did that. Too much that I don't know.

[375instroke]

The repro Bendix boosters are also larger where they go through the firewall, so you have to use a rotary file, or whatever, to open the hole up a bit. 

[Phillips68charger]

True, yeah the firewall plate is bigger. You have to cut out the hole to make it bigger. I was just looking at disc brake conversion kits & the one I was interested in is out of stock. Says coming soon. That figures. Lol
I've had this bendix for so long they might not take it back. That would be my luck.

[lloyd3]

So...mine's a Midland-Ross then?

I guess so...https://www.youtube.com/watch?v=PGO0aWJkrmo

[tan top]

So...mine's a Midland-Ross then?

I guess so...https://www.youtube.com/watch?v=PGO0aWJkrmo

think yours is a Bendix  !
ive always assumed & from what i have seen & read the only two boosters on a 68 -70 0r at least a 69 was a midland ross for power drums & tandum bendix booster for all engines discs &  hemi cars only with power drums also even in the FSM ive seen only  those two shown for a B-Body , looking again last night i must of missed this picture ! it shows another type of booster & its thinner & its called a Bendix drum booster , then found  nos one that looks very similar / same , as mentioned above i've seen this style a few times & just assumed it was from another model ,  looking into this style of booster i'm seeing more & more even on restored daytonas & would of thought who ever restored them would not use the wrong booster or at lease had a good reason to restore the same one that came off .....  the NOS one i found on Ebay  looks like its a direct from bendix part .... maybe  this set up is a over the counter / dealer installed booster ?  bit like the A body  over the counter power brake set up that was available ... in kit there was everything to convert to a power booster &  it was a midland ross booster   also in the parts book it lists boosters that were supplied in the field sounds like a conversion a kit to add power brakes  like the  A body mentioned above.... this is just speculation & my interpretation of connecting /joining the dots    below is some stuff i've put together  to look at & maybe draw your own conclusions   like i mentioned  i'm seeing more of this 3rd  type of thin bendix now or is it i'm just looking out for it  

first 6 pictures is this 3rd style mentioned above  be interesting to know those cars with this booster was they power brakes from the factory B51 or a dealer installed item 

[tan top]

 midland ross drum booster

[tan top]

 tandum max assist Bendix Booster

[tan top]

 68 /69 /70 mopar parts book booster info part numbers   

[Phillips68charger]

Thanks for all the info, I'm looking it all over.Would you happen to know where the part # is located on the booster?

[tan top]

Thanks for all the info, I'm looking it all over.Would you happen to know where the part # is located on the booster?

don't know a lot about power boosters where part numbers are on them etc ,i only know visually what to look for on a second generation charger  
i think  all the midland  ross boosters ( well the mopar  B-Body power drum ones have a metal tad attached to the band  clamp.....
i'm pretty sure the one on your charger  is a style ive seen on an A-body.  
the only booster for a 68-70 charger B-body with discs is a Bendix tandum booster like what you have bought.
should never use a power drum booster for discs same as never use a drum master cylinder with disc brakes .
the more i'm looking into this now there are soo many styles of boosters fitted to 66 - 75 mopars  
there is a website of a booster rebuilding company that shows different boosters & service parts i was looking at a while ago , before your post on this subject ,  forgot to save it , cant find it at the minute , will post here when i find  it  
there is a lot of incorrect / miss information /pictures /descriptions floating round the internet 
if i was fitting discs would keep it simple with factory style parts ie bendix booster , spindles ,  single piston slider calipers etc  & drum rear.
rather than go to the expense of all these new aftermarket set ups, keep it simple with tried & trusted parts that the aftermarket carry service / repair parts for  
having said that , was seriously considering 4 wheel discs  & a hydroboost at one stage .

[Phillips68charger]

Not being able to post photos direct is making it hard for me on here. I tried imgur & it still just posted a link.
But I understand what your saying.My calipers are original that have the chrysler logo & a part #. I really did think everything on the car was original until recent.
Again, the reasons I thought my booster was a midland was because of it not being a trapezoid shape, it's got the band around it & then that check valve being different.

Ive got a photo of my fender tag.Its worn but I can see most OK but I don't see those #'s on it to say it's a disc.
Here is photos on my Google of the fender tag.

https://photos.app.goo.gl/49aVTb4KBpR7S2YLA

https://photos.app.goo.gl/MymFztoG3jhyda8X9

1 more thing, I have a distribution block where all my brake lines run to & go out from but I don't see a proportionating valve. They say you need one for disc.
Well I need more brake lines & have been shopping around. So is it the front to rear line that utilizes the proportionating valve.?My front to rear is 1 piece & that's all I'm seeing on websites. Seems like you would need a smaller line added with it for coupling to use with proportionating valve.

[Phillips68charger]

Here's my passenger side wheel hub disc brake with original caliper part.

https://photos.app.goo.gl/ZBLnTBsk4nGQJk4o9

[Phillips68charger]

And lo & behold I found this part via another thread on here & its what I was so confused about with adding the proportionating valve.

https://www.classicindustries.com/product/all-years/dodge/all-models/parts/rin6801s.html

I found the post last night but didnt finish reading it unitl now. And I just got off the phone with classic industries & explained to the guy everything
& he says yeah im gonna need that prop. valve & I said well all of your listings just show the 1 piece like whats on my car. Im gonna need another line.
I said, can you lead me to what I need to be looking for. I had the catalogue in front of me, he said, no I cant do that. your gonna have to go to the forums
& prob. have someone to make you a line. Because your looking for a non O.E. part. Idiot!! Clearly he didnt understand. I mean if they sell the valve that came on factory ,then they should have the line for it. Should I call him back & give him the part # that they carry
so he will know what hes talking about next time? He was right though, this forum did help me, he didnt.