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Username Post: brake vac. canister        (Topic#346315)
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
07-31-17 03:08 PM - Post#2702200    

need idea for brake vac. canister, friend said old juice cans, lol ,..... also can't seem to stay logged in on this site



 

VANDENPLAS 
Frequent Contributor
Posts: 1665
VANDENPLAS
Age: 38
Loc: ontario canada
Reg: 07-29-09
07-31-17 05:50 PM - Post#2702226    
    In response to rocktober

" old juice cans" if you look at some fords from the 70's - 80's had an apple juice can as the vac canister!

Chevrolet has used a variety of vac canister from small round ones in late 90's blazers to large rectangular blobs in some 80's 90's fwd cars

Find something that will work and hide it

If you want to get creative anything with 2 ports that can hold pressure can hold vacuum


" The chain in those handcuffs is made of high tensile steel. It will take you ten minutes to hack through it with this, if your lucky. You can hack through your ankle in fivei



In the land of the blind the one eyed man is king 👑


 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
07-31-17 06:39 PM - Post#2702247    
    In response to VANDENPLAS

thanks



 
Bel Air kiwi 
"2nd Year" Silver Supporting Member
Posts: 3462
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-01-17 01:43 AM - Post#2702284    
    In response to rocktober

Hi Rocktober, The more vacuum you want to have the tank hold the better the design must resist collapse from atmospheric pressure. That is the more structural it needs to be.

The early tanks only held what the engine could produce so they looked like giant pills with rounded end tubes and a check valve.

If you want a new one all the usual suppliers like summit ,jegs, amazon etc have the fairly standard tubular type but they are either heavier wall alloy or small. (I run one on my street class drag car.)

This tray of eggs design was from memory a Ford trick and they used it for radiator pressure tanks and vacuum tanks.

The last one is more your late model euro turbo diesel car so is probably from VW/Audis which run the electric vacuum pump for brakes.

Obviously the pure sphere is the strongest shape which allows them to be made of plastic, and hold against 20+ "Hg. no problem.

Cheers Kiwi





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48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
08-10-17 06:20 PM - Post#2703694    
    In response to Bel Air kiwi

thanks ,... i put 11 in. wildwood brakes on the front, drilled disc., slotted, improved the braking about 25 percent on the first two to three, pushes, , may a vac. canister later, ...but i read , and about half the people think that a vac. canister won't help!!



 
raycow 
Honored Member
Posts: 26707
raycow
Loc: San Francisco, CA
Reg: 11-26-02
08-10-17 06:33 PM - Post#2703696    
    In response to rocktober

A canister doesn't make vacuum. It just stores vacuum. If your engine doesn't make enough vacuum to start with, a canister won't help any. Then you will need an electric vacuum pump.

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
08-11-17 07:19 AM - Post#2703746    
    In response to raycow

thanks makes sense ,



 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
08-11-17 07:21 AM - Post#2703748    
    In response to rocktober

what if i move my 7 in. booster from under the car and put a 11. booster back under the hood, ya think this would be a good help?... thanks



 
raycow 
Honored Member
Posts: 26707
raycow
Loc: San Francisco, CA
Reg: 11-26-02
08-11-17 09:12 AM - Post#2703761    
    In response to rocktober

If you have low vacuum, a larger booster will always be better than a smaller one. Can you mount an 11" booster on the firewall without clearance issues?

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
08-11-17 09:16 AM - Post#2703762    
    In response to raycow

yes i have room, some was telling about a dual diafame booster



 
Bel Air kiwi 
"2nd Year" Silver Supporting Member
Posts: 3462
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-12-17 05:04 AM - Post#2703844    
    In response to rocktober

Hi rocktober, Dual diaphragm boosters are a bit of a space saving fudge.
Before you start throwing money around you need to put a vacuum gauge on your engine and drive it around a bit. Record the values.

Boosters are just effort multipliers. They rely on a difference in area and a difference in pressure.
So not much area (small booster) and/or not much vacuum and you won't get much assist.

Big disc setups need more than double the line pressure of drum setups, and more, to work to their best. So you need a reliable boost ratio of over 2.0:1.

Brake boosters in the aftermarket are rated on a fantasy figure of 23"Hg that you won't get in the real world.
So if you are running half that vacuum then you need to deal with that by an alternate means.

Fortunately turbo diesel cars and pickups have no manifold vacuum and they have pumps that you can retrofit. They generally pull about 20"Hg of mercury and in combination with a tank will give you lots of repeatable stopping.

Downside is the mechanical ones on alternators need an oil feed and the electric ones are quite noisy like competition fuel pumps.

Cheers kiwi

48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 
rocktober 
Contributor
Posts: 119

Reg: 03-05-17
08-12-17 01:54 PM - Post#2703891    
    In response to Bel Air kiwi

https://www.mpbrakes.com/accessories/silent-dr ive-... anyone heard of these guy ? he says running this i'll have 18 vac. all the time, i can unhook my motor vac.



 
raycow 
Honored Member
Posts: 26707
raycow
Loc: San Francisco, CA
Reg: 11-26-02
08-12-17 03:53 PM - Post#2703900    
    In response to rocktober

For $600 I know I could put up with a bit of noise. Besides, an electric pump doesn't have to run all the time. You can use it with a canister and a vacuum switch, and then it will run only when needed.

Ray

There's a line between good and evil no wider than a razor's edge - D.S. James Hathaway quoting from The Night Keeper


 
50hotrod 
"5th Year" Silver Supporting Member
Posts: 898
50hotrod
Age: 60
Loc: Wisconsin
Reg: 07-25-11
08-12-17 05:50 PM - Post#2703926    
    In response to rocktober

  • rocktober Said:
https://www.mpbrakes.com/accessories/silent-dr ive-... anyone heard of these guy ? he says running this i'll have 18 vac. all the time, i can unhook my motor vac.



There are cheaper vacuum pumps out there.

http://www.ebay.com/itm/12-volt-electric- vacuum-pu...


Well, you know what's wrong with the world today

People done gone put their Bible's away

They're living by the law of the jungle not the law of the land

"Simple Man" By Charlie Daniels



 
Bel Air kiwi 
"2nd Year" Silver Supporting Member
Posts: 3462
Bel Air kiwi
Loc: New Zealand
Reg: 04-24-14
08-14-17 10:29 PM - Post#2704256    
    In response to 50hotrod

Hi Rocktober, Have you got a figure for your engine vacuum yet?

As 50 Hotrod has said there are a lot of cheaper kits out there than that one. Plus you can go to the breakers yard and get a Quality pump from Hella from a Volvo, and also VW, Audi as well.

That ebay kit claims 18-23"Hg continuous vacuum so if it does that then that is fine.

The problem is a lot of sellers rate their product on unrestricted free-flow tests.
The fan and pump guys in particular.

But what use is a 3000 cfm radiator fan if it can only do that without a radiator in front of or behind it. Or a 110 GPh fuel pump that can only do that without filters and in a bucket to bucket test stationery. Or a brake booster that can only meet spec at an inlet vacuum of 23"Hg when you are lucky to have 18"Hg.

Cheers kiwi



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48 3100 RHD, 51 Deluxe 4DR RHD, 51 Bel Air parts car, 52 Bel Air P-Glide LHD. Others 23T, 32 Tudor, 58 Edsel pacer 4DR HDT, 79 F250 351C RHD. 69,70,82 Capri. No mobile, no TV, and no Jap cars.

And when it was laid to waste, they called it peace.


 

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