Recommendations on 1970 power disc brake replacement M/C

[383RT]

Anybody have any luck on a particular brand of replacement master cylinder? They all seem to be made in China now.

Also wondering if anyone can clarify the discrepancy in the Pumping Points articlehttp://therammaninc.com/files/categ...uide_to_Mopar_Master_Cylinders_1967-19746.pdf) it states a 70’ E Body except 426 Hemi master cylinder (2944453) has a 1” bore, but the factory manual says it’s 1 1/8” bore.

 

[aussiemark]

Could you get your original one repaired? you can get a stainless steel sleeve fitted if it is really bad and this type of repair will make it last forever.

 

[Grady Cain]

If you still have the original (or an original) M/C, I would highly recommend getting it rebuilt before buying a crappy repop. It will cost more but it will be correct and worry-free. This company would be my first choice: Classic and Antique Cars, Trucks, Tractors & Motorcycles | Brake & Equipment Warehouse

 

[383RT]

My master cylinder is not original to the car. It's an aftermarket unit from a few years back. I just thought that since it's not an original, I wouldn't put any money into it.

 

[aussiemark]

Try and find an original one and have someone go through it.

 

[383RT]

Yep. Looking around right now to see what I can find.

 

[340challconvert]

Confirming that you have disc brakes
That being the case, the 2229171 has become hard to find and commands a premium price these days.
Ram man will have the unit at times; his prices tend to be very high.
Units come up that need a rebuild on e bay at times and sellers ask for $300 and up.
The original unit would have the "thermometer" front.
When I started to rebuild my 70 factory disc brake e body (non-hemi) I had the 171 unit, interestingly it was the correct unit but the date code was from 1975. Apparently my master was replaced after my car was about 5 years old with a correct cast number unit and later date. The cover did not have the original notice engraved on top like the original unit.
The aftermarket replacement units seem to all be 1 1/8 in bore which will work in a pinch. I picked up several new units to see what was out there;

Stamping on my 1975 original;

Next pic shows the "thermometer front"

The 171 unit was remanufactured and
sold for about a 7 year period and there should be some of them out there. On occasion people still find original new units in a box at swap meets/car show markets.
Some people like the quality of the Centric Units if you have to go for a replacement while you look for an original.
Good luck with the search

 

[383RT]

Yeah, I see the originals can be pricey. I’m going to check with a local parts house and see what rebuilt ones they have. Maybe I’ll get lucky and find an original. They have lots of old inventory. I just bought a rebuilt KH stock caliper for $35 bucks from Centric.

Thanks for the info!

 

[340challconvert]

I bought some Centric brake parts too. (calipers, MC,) moparleo, a FEBO veteran had suggested buying Centric to me a few years back. Looks to be of decent quality. The MC's are new, not rebuilt units. I figure, I can always have my 171 unit rebuilt if I get the urge.

 

[340challconvert]

I checked out the ramman's web site
As usual, he has a 171 unit rebuilt for $995. Did not list a date code for the unit. Technically, it could be anywhere from 1969 to 1977.
MOPAR 2229191

 

[aussiemark]

He uses brass sleeves the company that rebuilds brake parts over here uses stainless steel sleeves.

 

[340challconvert]

He uses brass sleeves the company that rebuilds brake parts over here uses stainless steel sleeves.

Definitely safer with the steel sleeves!