Hey there. I started to rebuild my brakes all around. I'm stuck with this doubt: I have 2 master cylinders and booster, one is a cast iron pump with large reservoir for front disc brakes (rearmost compartment) and small for the rear drums, that has a metal lid and a wire holder, and 4 bolts pattern. The other one is a skinnier pump, with plastic reservoirs, each one is independent from the other and they're the same size. The pump has 2 bolts pattern. Wich one should I use?

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

I know I'll get some opposition on this (what else is new?) but I prefer the 4-bolt units on cars that originally came with them.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

mine came with 2 bolt. wich is newer/better? the 4 bolt pattern one even has the brake lines on the other side of the pump. No big deal, I just wanna go newer and/or nicer in future brand new brake pump options.

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

Well then, if yours came with 2-bolt...

...use the 2-bolt!

The 2-bolt setup is newer.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I guess you would have no problem adapting anything to work, so.....
Use whatever you can get parts for down there

OK I'm going with my 2 bolt pump and booster. I thought it was the other way around and the 4 bolts was newer.

Other Q's:

do any of you have replaced the old big booster and pump with something new?

I'll tell you my choices of newer car reposition parts down here

VW (golf, polo, jetta, etc)
Ford (yay!)
Chevrolet (opel rebranded brazilian chevrolets)
Renault (21-19-laguna-megane)
Fiat ain't an option to me. Maybe the day they start to build cars....

I was thinking on going to a smaller but equally effective (if there' such a thing) booster and newer pump.

Thoughts?
kicks in the ass?

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

I prefer my master cylinder bolted to the firewall, without a booster.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

yeah, try that with a 3500 lbs car and disk brakes setup.... and then you tell me.

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

I got manual 10" drums all around with the MC connected to the fire wall. Stops fine for me! See sig for whats its attached to..its around 3500 lbs! Sounds like you maybe have a MC from an '80's Chrysler? There is a guy on Moparts (I think Zippy?) that sells adapter plates to use a late MC in a manual brake car with the 4 bolt holes.

Use both feet..............

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

heheeh I gues it could work with both, since I'm size 13 in shoes...
But seriously, disk brakes are harder to operate w/o boost. Ain't like drums, you can go manual with drums in just about any car or lite truck.

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Juan Ignacio Caino

Please use e-mail button istead of PM'ing. I do log in sometimes but I'll be answering quicker thru e-mail.

True, disks aren't self energizing like drum brakes.....

You either need a smaller bore master or larger bore caliper pistons (a larger diameter disk also helps your leverage (just like larger diameter tires hurts your leverage))

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Ummm...think for a minute. Just exactly what kinds of cars, with what kind of brakes, do you think my preference refers to?

(A-bodies with disc brakes!)

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一期一会
Too many people who were born on third base actually believe they've hit a triple.