master cylinder question
Moderator: John_Heard
master cylinder question
I'm using a stock dodge truck master cylinder for my car. My question is, do any of you guys know what the port sizes are on these. They are different sizes front to back. The rear port is I believe .500, and is the smaller of the two ports. thanks guys
73 Vette, moly back half
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Pump gas 496
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- John_Heard
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Re: master cylinder question
http://www.dragstuff.com/techarticles/R ... CylPN.html
Should be 9/16-20 and 1/2-20 BUT it's possible you might have 9/16-18 on the front, you'll have to check.
Should be 9/16-20 and 1/2-20 BUT it's possible you might have 9/16-18 on the front, you'll have to check.
My 1971 X275 Nova | Facebook
Re: master cylinder question
Awesome, thanks john.
73 Vette, moly back half
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
Re: master cylinder question
John_Heard wrote:http://www.dragstuff.com/techarticles/R ... CylPN.html
Should be 9/16-20 and 1/2-20 BUT it's possible you might have 9/16-18 on the front, you'll have to check.
Ok, so I got the zinc coated steel adapters from Jegs. I have the 9/16-20 and 1/2-20. The 1/2 fits perfect. The 9/16, threads in clean and bottoms out on the nut, before the taper engages the flare. The -20 and -18 your refering to is the thread count right? If it is, whats the deal on the fitting being to short to engage the flare?i Or is the -18 and -20 some other unit of measure that I missed and ordered the wrong fitting.
73 Vette, moly back half
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
- John_Heard
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- Posts: 5734
- Joined: Thu May 12, 2005 11:20 am
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Re: master cylinder question
No, you got it right. If it screwed in all the way, you have the right thread pitch (20), just the wrong style adapter. I'd suggest taking the one that is too short to O'Rielly's or Autozone, whatever and ask to pick through their fittings till you find a longer one.
My 1971 X275 Nova | Facebook
Re: master cylinder question
This is the one I got. Its supposed to be for OE chrysler master cylinders.
http://www.jegs.com/i/JEGS-Performance- ... 5/10002/-1
http://www.jegs.com/i/JEGS-Performance- ... 5/10002/-1
73 Vette, moly back half
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
- John_Heard
- Site Admin
- Posts: 5734
- Joined: Thu May 12, 2005 11:20 am
- Location: Resume Speed, Kansas
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Re: master cylinder question
Guess somebody screwed up... I can tell ya the one I used was for regular brake line fittings, not the 3 AN setup, you might have to do some looking around to find a longer one with that outlet.
My 1971 X275 Nova | Facebook
- John_Heard
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Re: master cylinder question
This looks longer - http://www.summitracing.com/parts/FRA-650309/
My 1971 X275 Nova | Facebook
Re: master cylinder question
John_Heard wrote:Guess somebody screwed up... I can tell ya the one I used was for regular brake line fittings, not the 3 AN setup, you might have to do some looking around to find a longer one with that outlet.
Looks like my options are, plumb it without the an fitting, mill the master cylinder bung down, or get a strange cylinder that uses 1/2-20 on both ports. Shit... guess I will skip the an fittings on that port...
73 Vette, moly back half
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
Pump gas 496
Two Pro Systems 950's
Chance 6000 converter
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