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40 series disc/drum master cylinders

Posted: Fri Jul 27, 2007 7:53 am
by turbo4t
Hey all, I'm pretty sure you can use the drum/drum master cylinder & booster when doing a front disc conversion on a 40 by removing the residual pressure valve from the front line. Can anyone confirm this?

I did a search and looked in the bible with no joy so if it's already there please post the link.

Ta

Posted: Fri Jul 27, 2007 9:22 am
by Surfin Alec
I have done the same twice. On my old 55 and my mates 40 when doing the disc conversion. I just undid the front brake line where it enters the master cylinder, removed the check valve (that what I was told it was called), tossed it, bled the brakes and off I went.

Alec

Posted: Fri Jul 27, 2007 9:30 am
by turbo4t
Surfin Alec wrote:I have done the same twice. On my old 55 and my mates 40 when doing the disc conversion. I just undid the front brake line where it enters the master cylinder, removed the check valve (that what I was told it was called), tossed it, bled the brakes and off I went.

Alec
That's what I thought. Thanks Alec. Did they work well?

Posted: Fri Jul 27, 2007 12:51 pm
by RAY185
This is some handy info for ya, even tells ya how to throw it over your shoulder for luck. :D

http://www.ih8mud.com/tech/residvalve.php