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View Full Version : Master cylinder in trunk??

jimbo
03-11-2011, 07:38 AM
A 57 Chevy on ebay. How exactly does this work?

http://cgi.ebay.com/ebaymotors/Chevrolet-Bel-Air-150-210-Restomod-REAL-MEANING-PRO-TOURING-CHANCE-LIFE-TIME-_W0QQcmdZViewItemQQhashZitem3a63d29770QQitemZ25078 2848880QQptZUSQ5fCarsQ5fTrucks



http://app4.websitetonight.com/projects/1/3/4/7/1347461/_mygallery/57CHEVY_081.JPG
Rhino
03-11-2011, 07:45 AM
I would assume a hydraulic coupling of master/slave cylinders, similar to a hydraulic clutch linkage. Look between the booster and the battery, you'll see what looks like a hydraulic cylinder.

My biggest worry would be trying to carry engine vacuum all the way back there.
Romulus
03-11-2011, 07:49 AM
Yup. More than likely he has a small single cylinder under the dash attached to his brake pedal that runs a hydraulic line back to the trunk to activate the dual master cylinder.

And then he has to plumb a vacuum line back there from the engine.

The things we will do for a clean firewall. :_paranoid
bentfab
03-11-2011, 08:26 AM
Junk !!!
pacificustoms
03-11-2011, 08:42 AM
I wonder what the dipstick in the trunk is for? Did it have IRS?
jimbo
03-11-2011, 09:00 AM
Corvette suspension.
Crazy looking tube chassis.
The funny thing is there is still a master cyl on the firewall. I assume it is for hydraulic clutch.

http://app4.websitetonight.com/projects/1/3/4/7/1347461/_mygallery/57CHEVY_084.JPG
http://app4.websitetonight.com/projects/1/3/4/7/1347461/_mygallery/57CHEVY_006.JPG
Rhino
03-11-2011, 09:14 AM
The funny thing is there is still a master cyl on the firewall. I assume it is for hydraulic clutch.


It's probably an unboosted master that is running the slave in the trunk.
That's a complex mess of brakes for no apparent reason.

I don't see a clutch linkage of any type. I'd assume it's an automatic.
GregWeld
03-11-2011, 09:27 AM
What a waste of effort - time - and money.

Put a good properly sized Wilwood manual M/C either under the dash using the Kugel 90* set up like I have on my '32 Ford -- or hang it on the firewall...

Looks to me like he was trying to get power brakes without having the ugly booster in the engine room -- but a properly set up brake system doesn't need a booster of any kind. A booster is a bandaid for improperly set up brakes.
bentfab
03-11-2011, 12:53 PM
What a waste of effort - time - and money.

Put a good properly sized Wilwood manual M/C either under the dash using the Kugel 90* set up like I have on my '32 Ford -- or hang it on the firewall...

Looks to me like he was trying to get power brakes without having the ugly booster in the engine room -- but a properly set up brake system doesn't need a booster of any kind. A booster is a bandaid for improperly set up brakes.

On the money Greg !
Shmoov69
03-12-2011, 08:29 PM
I think it's just a spare in a mount.....kinda like a spare tire mount!!! LoL:thumbsup:


Wow, THAT is over engineering right there!!:willy:
Six_Shooter
03-13-2011, 06:58 PM
A friend of mine and I were discussing this very idea, well it was someone he knew that did it.

The reason the guy that he knows that did it, was for weight balance.
GregWeld
03-13-2011, 07:08 PM
A friend of mine and I were discussing this very idea, well it was someone he knew that did it.

The reason the guy that he knows that did it, was for weight balance.

Sorry - and not directed at you... but that's a real "non issue" given the total weight of the components involved.
Six_Shooter
03-13-2011, 07:14 PM
For the guy that was a friend of a friend, it wasn't a "total" weight issue, it was a balance issue, of getting the front to rear weight bias 50/50 as well as left right to 50/50.

Some people will go to extremes to get things they way they want them.

Sometimes just moving a few pounds in one direction or another can really change weight bias.

I agree that there are other ways to achieve weight bias improvements, but this is how some people do it, other's will move the rads to the rear of the vehicle, fuse blocks, seating position, etc, etc.
Rhino
03-13-2011, 07:17 PM
I'd agree that some people go to extremes... but at the same time he could have gotten that same balance by using a stock style composite intake.

It would have been a whole lot less work. :)
GregWeld
03-13-2011, 09:00 PM
I'd agree that some people go to extremes... but at the same time he could have gotten that same balance by using a stock style composite intake.

It would have been a whole lot less work. :)

:rofl: :rofl:


Like I have to tell my friends sometimes... "just because you can, doesn't mean you should".
Vegas69
03-13-2011, 09:18 PM
Greg, we're boys but I disagree with you. There is a a reason factory cars all have power brakes. They take less leg with more braking force with a larger bore master cylinder. Higher, harder, compensating system.
wedged
03-14-2011, 06:43 AM
Look between the booster and the battery, you'll see what looks like a hydraulic cylinder.

the brass colored piece is a proportioning valve.


My biggest worry would be trying to carry engine vacuum all the way back there.
why ? that would be the last of the worries on this Rube Goldberg mess.

What a waste of effort - time - and money.


:willy: :rofl:

I think it's just a spare in a mount.....kinda like a spare tire mount!!! LoL:thumbsup:

:rofl:
qbrown
03-14-2011, 07:14 AM
When I was scrolling through the pictures I saw the master cylinder mounted on the firewall and literally stopped scrolling to try and figure this out. I just want to know who the builder was so I could ask why he thought it was a good idea to run double the amount of brake lines. Maybe he was getting paid on a per bend basis?

The chassis on this car looks awesome. Not a fan of that interior at all. And the wheels feel like an after thought to me.

Oh well to each there own.
GregWeld
03-14-2011, 07:19 AM
Greg, we're boys but I disagree with you. There is a a reason factory cars all have power brakes. They take less leg with more braking force with a larger bore master cylinder. Higher, harder, compensating system.

Factory cars aren't race cars - they're for little old ladies to go to the grocery store and they're built so you can stop with your big toe. No LEG involved at all. :rofl:
Romulus
03-14-2011, 09:23 AM
:rofl: :rofl:


Like I have to tell my friends sometimes... "just because you can, doesn't mean you should".

says the guy with a 45 page build thread on his "completed" hot rod. :lol:

I'm guilty of overthinking pretty much everything... so threads like this remind me to K.I.S.S. (Keep It Simple, Stupid):rofl:
GregWeld
03-14-2011, 09:48 AM
says the guy with a 45 page build thread on his "completed" hot rod. :lol:

I'm guilty of overthinking pretty much everything... so threads like this remind me to K.I.S.S. (Keep It Simple, Stupid):rofl:

:rofl: Touche!