brake boosters

[Henry James the 47th]

So, I'm swapping out the brake booster that came with my 47 series truck for one (out of a BJ60) that is set up for front disc brakes. I noticed that the booster no the firewall of the cab from the 60 is a larger diameter than the one from the all-drum braked 47. Conversely however, the auxiliary vacuum tank on the 47 (the two pictures to the right) is nearly 4 times larger than the coffee-can sized on on the 60 (see left below).

My question boils down to: would there be any bad consequences to using the larger tank from my 47 with the larger booster from the 60? I've attached pictures the first is the small tank from the 60, the other two are the 47 series tank.

 

[UpsideDown]

The larger booster is usually for the disc/drum set up. The smaller boosters were used for the drum/drum set up.

The larger reservoir is better, imo.

 

[roscoFJ73]

The larger booster is usually for the disc/drum set up. The smaller boosters were used for the drum/drum set up.

The larger reservoir is better, imo.

x2 That reservoir was used up untill 1990 and is very similar to the ones used now.
Its the same as the HJ60/75

 

[Henry James the 47th]

x2 That reservoir was used up untill 1990 and is very similar to the ones used now.
Its the same as the HJ60/75

How does the size of the reservoir tank affect the performance of the brake booster?

 

[too tall]

more volume of vacumn with a larger resevoir .

 

[Tapage]

How does the size of the reservoir tank affect the performance of the brake booster?

the vac pump could need more time to fill it from 0 vac to full .. but in other way you have always more vac in the tank for your brakes ..

 

[bluerock]

booster vacum can

Hey
can the brake booster be run without this vacumm can as i want to move mine for different running boards. it is under the drivers floor.

 

[seapotato]

Hey
can the brake booster be run without this vacumm can as i want to move mine for different running boards. it is under the drivers floor.

I'd have to say yes to that one. my truck didn't have one for the 8 years I drove it daily.

brakes seemed fine. I doubt I"ll install it after the rebuild either.



cheers,
' ryan

 

[bluerock]

Thanks
what did you do with the two lines attach them together so it is just a loop

 

[seapotato]

just a pipe nipple that fit in there with a couple hose clamps. nothing fancy...


people say the brakes are better with the cannister in there, and going from having one to not having one, you may notice the difference .

I've heard of some using a small fire extinguisher in its place, but it's one of those little projects that's been pretty low on my to-do list.

cheers,
ryan