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post #1 of (permalink) Old 02-17-2003, 09:41 PM Thread Starter
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4 wheel disc & master cylinder ?\'s

Hey folks...
After some stupid wheelin' which tore off one of my caddy rear calipers, I thought I would scrounge around to fix the problem. I came up with new calipers (long story-NOS) off of an 83 Monte Carlo (the fronts) to bolt back into place of my caddys. A guy wanted my caddy rears and was willing to pay for them in trade and cash - the trashed one needed rebuilding too!

Anyway I ended up with bigger pistoned brakes for the rear. After hooking it all up, the pedal feel sucked even worse than with the caddy calipers - (bigger pistons - more fluid). S I decided it was time for a new master cylinder.

I did some research here and on the web and talked to a few guys on the trail and decided to buy a master cylinder from Master Power Brakes and plumb in an adjustable proportioning valve (I removed the factory combination valve). Did it...bled it and the brakes work OK. I have better 4-wheel stopping power but it takes some effort to hold the pedal.
So I see an ad in JP over the weekend advertising a Master Power brakes master cylinder and booster combo for a YJ. I call and ask why the salesman did not recommend that setup for my rig and the guy said what I have should be adequate. I said that it requires too much effort to stop it in low range and he said well it stops it. I bitched and he said sorry that not all of the sales people are aware of all the products they sell.

So am I screwed unless I start over again? I am on on shakey ground here - I called the "experts" because brakes are a little out of my understanding when it comes to bore and stroke and pedal gate, etc. Somebody give me some advice before I push my junk over a cliff!
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post #2 of (permalink) Old 02-18-2003, 10:52 AM Thread Starter
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Re: 4 wheel disc & master cylinder ?\'s

Surely someone wants to chime in!!!
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post #3 of (permalink) Old 02-18-2003, 03:41 PM
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Re: 4 wheel disc & master cylinder ?\'s

This might help.
http://www.atlanta-off-road.org/6/ub...p;m=9746034632

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post #4 of (permalink) Old 02-18-2003, 05:38 PM Thread Starter
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Re: 4 wheel disc & master cylinder ?\'s

Thanks man...good info on the link.

I'll try it.

Anyone want to buy a slightly used MC for $90??? Man I got screwed!javascript:void(0)
[img]images/graemlins/confused.gif[/img]
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post #5 of (permalink) Old 03-05-2003, 11:52 AM Thread Starter
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Re: 4 wheel disc & master cylinder ?\'s

Working on the E350 swap...

Will let everyone know how it turned out!!
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post #6 of (permalink) Old 03-07-2003, 03:09 AM
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Re: 4 wheel disc & master cylinder ?\'s

bigger pistons on the calipers use more fluid to push the piston out so that means you could get a bigger bore master cylinder 1 1/16" or a 1 1/8" is what i got. the smaller the bore the harder it is to push the fluid and the bigger the bore the easier to push it. to big of a bore makes it seem smushy though so you have to find a margen in between hard and soft. [img]images/graemlins/thud.gif[/img]
post #7 of (permalink) Old 03-07-2003, 09:00 AM Thread Starter
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Re: 4 wheel disc & master cylinder ?\'s

Here is the result of the swap - I like the results so far.
See this link

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