Gemini Brake Booster

[Burnsy]

Can anyone fill me in on Gemini brake boosters, I am looking at one for my EK but anyones infor from their FE-FC conversion would be a great help.  Questions that spring to mind are:

Are the gemini units dual circuit?
If so, what size rear slaves do I need?
Can I bolt a gemini booster and master straight up for Torri disks or do I need a different master?

Mike

[Burnsy]

Just another thought, does anybody know what size EK rear slaves are and are they the same as the front?  I seem to recall reading somewhere that the FB and EK cylinders where a different size to FE and FC's?

[ACE]

Hi Burnsy,
I've seen this conversion done to a EH Holden.
He used a Gemini Booster and Dual circuit master cylinder connected to Torana front discs with 9/16 rear wheel cylinders.
FE-EK front wheel cylinders are 1 3/16''
FE-EK rear wheel cylinders are  1  1/16''
FE-FC rear brake cylinders are not interchangeable with FB-EK as they have a different brake pipe size.
Hope this helps,
Regards ACE

[Digger]

Burnsy,

When using the Gemini booster it is best to run a F##d XB master cylinder I think they are a 1" bore.

Hope it helps,
Steve.

[Sarge]

Burnsy,
          I am running Commodore disc brakes both front and rear. I am using TE Gemini booster and master cylinder. Just made my own brake line's to suit. Hope this is of some help to you.

Regards
Sarge

[Burnsy]

Can anyone tell me the diameter of the gemini booster, my EK is Auto and it doesnt have much room between the master cylinder and the bonnet hinge - only 65mm to the centre of the cylinder to be precise :-/, may have to go back to the VH40 option.

Why is it better to use a one inch Fxxx master cylinder if Sarge is able to run front and rear disks off a gemini master, why change it?  After all who likes to contaminate their Holden if they don't have too!!!

[Effie C]

V6 conversions use the crummydore booster in FE FC'sand the gemini booster in FB EK's. Check out their site as it contains some info.
John M

http://www.v6conversions.com.au/