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Old 11-20-2002, 03:50 PM   #1 (permalink)
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FJ40 braking issues

I have a soa fj on Bj60 axles. My problem is that the rear locks right up and the front keeps rolling. I have a 100% new brake system (components, lines etc.) What can I do to fix this. Its pretty scary when I hit the brakes and the truck starts sliding


thanks Dan
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Old 11-20-2002, 04:00 PM   #2 (permalink)
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Add a proportioning valve to the rear brake line. Get an adjustable Wilwood model. This allows you to adjust the rear brakes so they do not lock up before the fronts.
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Old 11-20-2002, 05:29 PM   #3 (permalink)
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Or use a late 75' or early 76' master cylinder. I run 60 F&R on my 40 with a late 75' master and it works great. We have use this master cylinder on many conversions in the shop.
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Old 11-20-2002, 07:08 PM   #4 (permalink)
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Angry Wilwood Valve-----WIL-260-2220

What Medusa said...go to Summitracing.com and put in this part number.....WIL-260-2220.....$39.99, it worked great for me...
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Old 11-21-2002, 12:48 AM   #5 (permalink)
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does an aftermarket propotioning valve make any difference to pedel hight?

BTw I have a master from a 79
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Old 11-21-2002, 09:57 AM   #6 (permalink)
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You should be fine with the '79, in that case if you have the adjustable is won't matter except how you tune it.
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Old 11-21-2002, 10:52 AM   #7 (permalink)
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Quote:
Originally posted by crawlin cruiser
does an aftermarket propotioning valve make any difference to pedel hight?

BTw I have a master from a 79
Nope, but your pedal height is still adjustable under the dash or by using the slave cylinder, but you must be careful either way not to overextend....otherwise it blows the slave apart.
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