firewall mounted booster single or dual diaphragm?

Brakes discussion.

firewall mounted booster single or dual diaphragm?

by jinxed » Sun Jan 18, 2015 4:19 pm

Hi all, I am converting from a remote VH40 booster to a firewall mounted booster for my EH sedan. Its basically small block etc. and complete HQ brakes disc front/drum rear and master cylinder to suit. I am keeping everything the same apart from the booster which I planned to use a 7 inch single diaphragm.

My question is before I buy a booster... Is there any advantage to adding a 'dual' diaphragm booster? Also what about those boosters you see all the time on ebay? Anyone had any good or bad experiences with those?

Thanks in advance for any help.
 
Posts: 5
Joined: Tue Dec 30, 2014 8:29 pm

Re: firewall mounted booster single or dual diaphragm?

by utility8 » Mon Jan 19, 2015 12:01 am

Manual or auto?
User avatar
 
Posts: 2649
Joined: Tue Mar 11, 2014 6:17 pm

Re: firewall mounted booster single or dual diaphragm?

by jinxed » Mon Jan 19, 2015 9:59 am

Its Auto,

There are always lots of these boosters on Ebay if you type in 'Brake Booster 7 inch Universal Type' or something like that you will see what I mean. Some are chrome, some powder coated and some are zinc coated. Good prices usually around the $100 mark, just not sure of quality.

Thanks.
 
Posts: 5
Joined: Tue Dec 30, 2014 8:29 pm

Re: firewall mounted booster single or dual diaphragm?

by utility8 » Tue Jan 20, 2015 6:25 pm

I've used a single diaphragm 8" with a 1" bore master on both my cars.
The pedal assemblies have been modified to use the clutch position.
I had no need to modify the hinge or hinge springs.
User avatar
 
Posts: 2649
Joined: Tue Mar 11, 2014 6:17 pm

Re: firewall mounted booster single or dual diaphragm?

by jinxed » Wed Jan 21, 2015 7:32 pm

Okay thanks for that, btw what kind of booster and master cylinder did you use on yours?

Cheers
 
Posts: 5
Joined: Tue Dec 30, 2014 8:29 pm

Re: firewall mounted booster single or dual diaphragm?

by utility8 » Thu Jan 22, 2015 3:53 pm

Have a look at this build. This is my sedan with an 8" Gemini booster & XF 1" bore master. (I think that is what was used).

viewtopic.php?f=12&t=6535&hilit=wrs
User avatar
 
Posts: 2649
Joined: Tue Mar 11, 2014 6:17 pm

Re: firewall mounted booster single or dual diaphragm?

by jinxed » Sat Jan 24, 2015 4:02 pm

Thanks again for your reply, I had a look at that post and your ute one and I get what you mean now, both your cars have some neat work and ideas in them, the booster looks a bit like an xf. Anyway, when I work something out for my car i'll post it here.

Cheers..
 
Posts: 5
Joined: Tue Dec 30, 2014 8:29 pm

Re: firewall mounted booster single or dual diaphragm?

by utility8 » Sun Jan 25, 2015 11:25 am

Thanks jinxed, the booster isn't of a Ford, they are much, much bigger. The 8" will fit relatively easily compared to a the larger Ford or Commodore type unit. I'll measure outer body & post for you. I believe 200B boosters are the same as mine as well.
User avatar
 
Posts: 2649
Joined: Tue Mar 11, 2014 6:17 pm

Re: firewall mounted booster single or dual diaphragm?

by jinxed » Sat Jan 31, 2015 4:37 pm

Ok thanks and no worries. For what it’s worth I just put a pic of what the setup is (or I should say 'was') in my EH. I'm kind of busy with bodywork at the moment with mine and the more I look the more I find to do unfortunately, but the choice of booster affects other things like the firewall and brake lines and therefore need to plan stuff ahead, as I'm sure you would understand, so I appreciate the info.
Dec08^11.JPG
Booster on drivers side inner guard
Dec08^11.JPG (74.47 KiB) Viewed 8962 times
Attachments
Dec08^10.JPG
Dec08^10.JPG (94.24 KiB) Viewed 8962 times
 
Posts: 5
Joined: Tue Dec 30, 2014 8:29 pm


Who is online
Users browsing this forum: No registered users and 3 guests