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#21
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How do you recognize that by looking and if I used the pictured master, front reservoir is for the rear and visa versa?
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Greg Reid Palmetto, Georgia |
#22
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Quote:
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1967 Firebird 462 580hp/590ftlbs 1962 Pontiac Catalina Safari Swapped in Turd of an Olds 455 Owner/Creator Catfish Motorsports https://www.youtube.com/@CatfishMotorsports |
#23
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More than likely the metric rears (D154). They probably look mostly the same as the front calipers, but are on a roughly 5" hole to hole mount vs a 7" hole to hole mount? May also have an integral parking brake.
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-Jason 1969 Pontiac Firebird |
#24
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Bigger rez is for fronts.
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#25
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Doh!... Why didn't I catch that?
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Greg Reid Palmetto, Georgia |
#26
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I’ve got a couple more basic questions if you have time.
1. What exactly is the difference between disc / disc vs disc / drum master cylinders? 2. Is there any correlation between the fitting sizes on the master cylinder and where they go? I.E. does the bigger fitting always go to the rears, which usually have a larger line? Thanks, Murf |
#27
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1. Not much that I have seen or know - maybe spring rate between the 2 pistons?
2. All I have seen have larger lines to the rear. Some have the same size. |
#28
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I went manual Wilwoods some time ago as well. I did end up going with their master mostly because their proportioning valve set-up was nice and clean when packaged up. No regrets.
The car was always a manual set up and way back it was my daily driver. Manual brakes was never a concern because I didn't own anything else that had power, I just didn't know any different. Now that I'm older and have been driving modern cars it does take a little reminder how it will behave but very solid performance. Jason, question if you don't mind. I recall seeing one of your videos where you replaced the rear lines with a smaller diameter. Did you do this to optimize the manual setup and/or to avoid the use of an adjustable prop valve?
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#29
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Yes I went with a 3/16” rear line over the factory 1/4” line. Disc brakes don’t necessarily need the same volume of fluid as drums. My research suggests that this reduces pressure drop to the rear calipers.
Whether that’s actually happening I don’t know, but I haven’t had any issues. The smaller OD line was a heck of a lot easier to snake through the chassis, that’s for sure.
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-Jason 1969 Pontiac Firebird |
#30
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Thanks man!
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#31
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As a brake system novice here, can you shed some light on this? How did you bolt the master to the firewall? Did the factory pedal work? Does it feel like manual vs power steering, where you get way more feedback for a bit more effort? Trying to figure if I have to look into this vs the Chinese knockoff factory disc/disc booster/master that I have on mine now.
Thanks.
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Panos Little Miss G Racing |
#32
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