22 replies to this topic

[marko1au]

ive decided that my sons lx build is going to need a brake booster, will any electric booster suit or do i need to acquire a specific type .... every thing ive looked up suggests that all boosters run in the 18 - 22 ins vacuum ....... is the torana any different. i had a quick look through the posts and couldn't see anything relating to this .............. if there is could someone please point me in the correct direction 

[dattoman]

Yep

Get a VE V6 pump

[marko1au]

thankyou for your reply dattoman ....... ill look into getting one

[marko1au]

Okay i have the ve pump organised to pick up tonight ......... do i need a vacuum pressure switch inline or are these setup to work okay without ....... thankyou in advance

Edited by marko1au, 20 November 2018 - 12:36 PM.

[marko1au]

duggan208 ........ that is correct 

[marko1au]

just to update ........ vacuum pump is from a series 2 ve or vf commodore .....

[bat 53]

if you go 4 posts down in this section there is a full discussion on the subject

[rodomo]

http://www.gmh-toran...mps-for-brakes/

[marko1au]

okay ive sourced the vacuum pump, second hand from wreckers in vic ........ ive tested it and it works ....... now im in need of vacuum control switch ....... ive looked around and other than exactly what i need is in the US of A but postage is almost twice the unit cost ........ and i cant find anything in aus ...... well when i say i cant find anything i mean anything that gives good description of the switch ........ anyone know where to go for these please ...

[mick_in_oz]

Lots of suitable switches available, BUT, are you after something that will work, or something that is like a factory thing with plug etc?

 

I used something like this, but I'd have to dig out the actual part number to know which one it was.

 

https://au.element14...TP_LastViewed_1

 

It is adjustable via a grub screw down inside the vacuum port so you can set the point at which it switches off.

[bat 53]

if you check out the vf they have a pressure switch on the booster plug 

i pad died so can't do a photo 

 

cheers bat

[marko1au]

Mick_in_oz ..... im after a switch that is preferably set with the vacuum settings, im after aftermarket  that will switch on and off the pump ...... from my understanding on at 16 ins or below and off at 22 ins. also on another thread someone tried the vf pressure switch and couldnt get it to work in and aftermarket situation ....... if their is a way to get it to work ......... im all ears ..... my other issue is that im having trouble with converting from vacuum ins to psi and mpa .... EV Power Brakes in the US of A have this one http://www.evwest.co...lude85ps0nr9pm2 ........

[marko1au]

Vacuum Pump Pressure Switch for EV Power Brakes
[Vac Switch] Price:  $38.99

This switch will keep your electric vacuum pump running between 17-20 psi which is the perfect operating vacuum for all standard vacuum assist brakes. With a simple one wire design, the switch throws a ground signal when the pressure is below 16 psi to activate the pump relay. Housing must be grounded, includes crimp pin for connector.  

 

this is a better description and the price is in usa dollars .......... postage was around $72 in usa dollars ......

[mick_in_oz]

This is the actual switch I am using on my Vac pump.

 

https://au.element14...ustralia/search

 

Switch provides a change over contact, I've simply put the contact in series with the Vac pump power, it could switch positive or negative.

 

It doesn't have a large hysteresis, maybe only 2"Hg, I have it set to about 18 or 19" Hg, works a treat.

There is another thread on here somewhere that has a couple more pics of my setup.

 

 

Attached Files

•  V__86D3.jpg   225.78K   16 downloads

[marko1au]

Thankyou Mick_in_oz

                                 ill assume you have set the hg by using a vacuum gauge ........ and how did you wire it up ....... does this work both ways, as in it turns on at approx 16 hg and switches off at 22 hg ........

[mick_in_oz]

Setup with a syringe and a vacuum gauge on the bench.

Below the set point of 18 or 19"Hg the switch is closed, lets the Vac Pump motor run, at the switch point it opens and turns off the pump till the vacuum falls a few inches of Hg and it comes on again and so it goes.....

 

The switch is simple in series with the positive lead to the pump, could be in the negative lead if you prefer.

My switch was several years ago now, but I paid about half what they are worth now!

 

But if you download the data sheet it'll give you the necessary info to be able to cross reference it to any other switch.

My pump is a Hella UP28 series.

[marko1au]

mick_in_oz .......... i went with your idea and bought the switch from element 14 ...................... didnt realize how small they are ........ looking at your pics, mine is half the size ..... have not had time to set it up as yet but will let you know how i went. probably in the new year ... but thanks again for the information

[marko1au]

mick_in_oz ........... thankyou for your help, now that i have it setup working on the bench im very happy and cant wait to install on the vehicle ...... next issue is the retro-fit hand brake ...

[marko1au]

i do have everything set up in the vehicle but not operating as yet ............. ive forgotten how to upload pictures, any help in that solution will be gladly accepted ....

[marko1au]

its okay i think ive worked it out ........ posting pictures that is ................

[marko1au]

the switch is hard to see in this pic ....... but you get the idea

[marko1au]