Updating early model car with late model master cylinder

[crowfive]

You could always do this, which is what I did on my 59 when I switched it to a dual circuit master. Similar to the Volvo way, but this is using all VW parts and it's really clean looking.

Get this reservoir:
http://www2.cip1.com/ProductDetails.asp?ProductCode=VWC%2D211%2D611%2D313%2DJ

and this hose:
http://www2.cip1.com/ProductDetails.asp?ProductCode=VWC%2D211%2D611%2D805%2DF

then just put a compression fitting on the hardline that comes out of the stock reservoir with another brass fitting with a hose barb for the hose going to the bus reservoir on the master cylinder. This lets you keep the stock reservoir and still run the dual circuit brake system.
_________________
Experience: Something you don't get until 10 minutes after you needed it.

[drscope]

You guys who think that dual circuit master will save you if one circuit fails are FUNNY! You obviously have never had a massive failure.

I have news for you, if one circuit fails, the pedal is going to the floor! Been there, done that. Found out why they stopped calling it an “emergency brake” and started calling it a parking brake too. Because when the main line going to the rear blows up, and the pedal goes to the floor, and you are having that “emergency”, and you yank up on the handle, you still don’t slow down! Even when the rear tires stop turning, you aren’t slowing down no matter how much noise they are making.

However, with a dual circuit, you may be able to slow things down just a bit more before hitting that immovable object. It’s worth the effort to make the improvement, but if you think things are still going to work just fine if one side fails, you are only kidding yourself!

As for using a T and a single circuit reservoir, there should be no problem with doing this. BUT you need to listen to what the car is telling you. If the pedal feels funny, you need to stop and check it out, not try to make it home 600 miles away. If the reservoir goes empty on single or a dual, you will feel it at the pedal before you have a brake loss.

It’s up to you to pay attention or not.
_________________
Mother Nature is a Mean Evil Bitch!

[Bklyn63]

I have 2 switches lying around from my single master cylinders off my 63. can I just screw those onto the dual circuit master cylinder and just hook up the electrical connections to one of them and call it a day?

thanks

[Ketterer]

Pretty sure they're the same. The switches are so cheap, why risk installing a bad one and having to deal with another bleeding session?

[vdub]