The Cal-look Lounge

Cal-look/High Performance => Pure racing => Topic started by: SteveW on June 03, 2008, 18:57:11 pm



Title: Thread size on a '67 master cylinder - Disk Brake Questions..!
Post by: SteveW on June 03, 2008, 18:57:11 pm
Does anyone know the thread size of the ports on a '67 beetle master cylinder? I want to run AN fittings throughout so I need to order the correct adapters!

Thanks
Steve


Title: Re: Thread size on a '67 master cylinder
Post by: JS on June 03, 2008, 20:25:27 pm
Should be M10x1.


Title: Re: Thread size on a '67 master cylinder
Post by: SteveW on June 03, 2008, 20:26:54 pm
Cool, thanks  :)


Title: Re: Thread size on a '67 master cylinder - Disk Brake Questions..!
Post by: SteveW on June 04, 2008, 15:56:47 pm
As I'm going to be running 4 wheel disk brakes, is it a good idea to run a brake proportioning valve e.g this from Wilwood

(http://www.rallydesign.co.uk/images/knobvalve-SML.jpeg)

Also do I need to run a residual pressure valve as the M/C will be lower than the calipers?

Thanks
Steve


Title: Re: Thread size on a '67 master cylinder - Disk Brake Questions..!
Post by: Zach Gomulka on June 04, 2008, 16:14:52 pm
I've got 4 wheel discs on my car, original master cylinder with no residual pressure valve and no problems. I am thinking about installing a proportioning valve though because when I really hammer on the binders my 145's lock up, a little more bias towards the rear wouldn't hurt.


Title: Re: Thread size on a '67 master cylinder - Disk Brake Questions..!
Post by: Bruce on June 05, 2008, 02:10:09 am
A pro valve won't help that, Zach.  They are usually installed such that they can reduce the rear lockup.  You need the opposite.  What are your rear brakes now?