Author Topic: 1" master cylinder upgrade?  (Read 1406 times)

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  • Offline Rock Crawl'n
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1" master cylinder upgrade?
« on: Sep 07, 2015, 05:36:04 PM »
Do you also need to upgrade the booster ? Added new vented rotors and new rear brakes this week end. But did 1" master upgrade last year. But did not upgrade the booster is that required. My brakes have always rely manual. I am running 35" tires on a 1982 long bed just looking for a little more stopping power any suggestions?
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  • Offline 4WD Legend
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Re: 1" master cylinder upgrade?
« Reply #1 on: Sep 08, 2015, 09:39:22 AM »
Are you running v6 calipers?
The MC on my first gen went bad so I replaced it with a 1'' bore MC. I didnt change anything else and now the pedal is very hard and I have to stand on it. I Assume the entire system needs to be swapped over. It looks like the only option for an upgraded booster in a first gen is a 22ret booster and they are about $200, I'm gonna go back to a stock MC for now.
80 shortbed-22re,w56,Marlin 23 spline dual cases,HighAngle drivelines,RUF/63"chevy's,35''mtr's,85 front axle,30 spline Longfields, Allpro highsteer.87 rear axle,5.29 gears,rear spool,BudBuilt cm, marlin HD clutch,ramsey 8000 winch. 
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  • Offline Rock Master
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Re: 1" master cylinder upgrade?
« Reply #2 on: Sep 10, 2015, 05:58:21 PM »
I did V6 rotor swap recently and still use the original MC.  It works fine for me.  I have heard if you also put discs in rear you will absolutely NEED the 1" MC. 

I have also heard that upgrading the booster makes the biggest impact on brake feel.

I'm okay with a soft feeling brake pedal.  They still easily lock up if I need them too.  Some times too easily, so for now i am glad I have not done the MC and Booster upgrade.  But I am sure I will do it eventually.  Gonna jump to 37's for next tires and will probably do rear disc swap and redo brakelines and LSPV so I figure I'll end up with all new plumbing and the MC/Booster upgrade at that time as well.

So....booster is only required if you still feel like the pedal stroke is too long or 'slow/soft'.  If you are used to a sensitive/short stroke pedal or prefer that, I would do the booster as well.

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