Re: [Chrysler300] 300G Brakes - Dual Master Cylinder Conversion

Hi Mark, I’m sorry I haven’t been able to get involved with your questions on the Master Cyl. I gave you. Some where in my archives I have a picture that I took of the instillation that I did. I’m sorry to say I haven’t been able to drive my car yet. Between my wife getting Cancer and me Breaking my back. I've had 9 surgeries and it still isn't fixed. I will do my best to find the picture for you if you need it. I also purchased a small adjustable per portion valve from a speed shop. It goes inline so you can put it where ever is handy. I only installed it in case I need it . Again I’m sorry I haven been more help. But I do know the Master Cylinder bolts right up. Gary Barker

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Sent: Thursday, July 23, 2015 7:25 AM

To: Chrysler300@xxxxxxxxxxxxxxx

Subject: RE: [Chrysler300] 300G Brakes - Dual Master Cylinder Conversion

Thanks Dan & Tony.

Dan I read your conversion write up on the web site. It is very good and I like the way the final product looks.

The Wagner MC 71258 came from an e-mail Gary Barker put out in 2012. He stated it was bolt on to his 300F. When I look up the specification on that master it shows it is for a car with both disc and drums so I’m hoping that means there will be no residual valve on one of the ports. It also appears to have a bolt down lid like our original masters.

I have an e-mail out to Stainless Steel Brakes to see what modifications are needed with their MC.

-Mark Knutsen

From: DAN300F@xxxxxxx [mailto:DAN300F@xxxxxxx]
Sent: Thursday, July 23, 2015 9:11 AM
To: awrdoc@xxxxxxxxx; jsnowosacki@xxxxxxxxx; Knutsen, Mark
Cc: Chrysler300@xxxxxxxxxxxxxxx
Subject: Re: [Chrysler300] 300G Brakes - Dual Master Cylinder Conversion

Hi all:

Way back when, I converted my F to disc brakes and subsequently installed a dual MC. I chose an MC from a '69 Barracuda of Dart. It installs nicely and is not to hard to add fluid to. The only mods I needed to make were to remove the residual valve in one port, make the ball on the end of the push rod just a tiny bit smaller in diameter to fit into the push rod of the MC and install a brake switch beneath the dash. I chose to make the ball smaller so that if I ever needed to replace the MC on the road, I would not have to monkey around with enlarging the hole in the MC push rod. My story is in the Technical section of our web site.

I have talked to many dirt racers and they all say that if you want more braking power, use a smaller MC.

E-mail me if you want to discuss this further. Good luck.

Dan Reitz

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In a message dated 7/23/2015 5:06:14 A.M. Pacific Standard Time, Chrysler300-noreply@xxxxxxxxxxxxxxx writes:

Stainless Steel Brakes provides a DB master cylinder for their front disc conversions. Piston needs some modification. If I remember John Hertog used a 1962 piston on my car?

Clip does not work. Needed to make a special clamp to hold lid on or wire ties.

All this for my 1960. Close to 1961?

Tony

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At Jul 23, 2015, 8:07:53 AM, John Nowosacki jsnowosacki@xxxxxxxxx [Chrysler300] wrote:

I'd be interested in knowing, as I had always heard/read that there wasn't enough room behind the carb/ram setup for a dual master. Maybe that was correct at the time, but perhaps a solution has been found since then?

On Wed, Jul 22, 2015 at 6:38 PM, 'Knutsen, Mark' Mark.Knutsen@xxxxxxxxxxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:

Hopefully a quick question for the group. I am researching the front disc/dual master cylinder conversion for my G. Is the recommended master cylinder for the disc/drum setup a Wagner MC71258 (previously the F71258)? It appears there are others that will work, but they require modifications either to the height, the lid attachment, or removal of a residual pressure valve. This one seems to be able to bolt right on with only the possible modification to the brake push rod diameter.

Thanks in advance J

Mark Knutsen

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