FJ40 braking issues - Pirate4x4.Com : 4x4 and Off-Road Forum

crawlin cruiser · 11-20-2002, 03:50 PM

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

Medusa · 11-20-2002, 04:00 PM

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.

cruiseroutfit · 11-20-2002, 05:29 PM

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.

Big DW · 11-20-2002, 07:08 PM

What Medusa said...go to Summitracing.com and put in this part number.....WIL-260-2220.....$39.99, it worked great for me...

crawlin cruiser · 11-21-2002, 12:48 AM

does an aftermarket propotioning valve make any difference to pedel hight?

BTw I have a master from a 79

dieselcruiserhead · 11-21-2002, 09:57 AM

You should be fine with the '79, in that case if you have the adjustable is won't matter except how you tune it.

cruiseroutfit · 11-21-2002, 10:52 AM

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.

11-20-2002, 03:50 PM	#1 (permalink)
crawlin cruiser Registered User Join Date: Mar 2001 Member # 3760 Location: Kamloops BC Posts: 987	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 __________________ 83 BJ60 DD,74 FJ40 crawler Be Canadian, Eat beaver!!

11-20-2002, 04:00 PM	#2 (permalink)
Medusa Old Rock Doc Join Date: May 2000 Member # 915 Location: Fargher Lake FrankenCruiser Lab Posts: 1,652	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. __________________ Got Rice?

11-20-2002, 05:29 PM	#3 (permalink)
cruiseroutfit Zeus of the Sluice Join Date: Sep 2000 Member # 1858 Location: Sandy, Utah, USA Posts: 3,404	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. __________________ Kurt Williams Cruiser Outfitters - YOUR CRUISER PARTS SOURCE! - ARB - OME - Engel - Helton - AdvAdapt ExpeditionUtah.com U4WDA - Member TLCA #10662 Wasatch Cruisers #028 Mountain Yoats Red Rock 4 Wheelers #789 Mojave Underground kurt@cruiseroutfitters.com

11-20-2002, 07:08 PM	#4 (permalink)
Big DW Registered User Join Date: Feb 2002 Member # 9950 Location: Lodi, CA Posts: 1,060	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... __________________ [SIZE="4"][COLOR="Blue"]Operator, Quick...give me the number for 911!!![/COLOR][/SIZE]

11-21-2002, 12:48 AM	#5 (permalink)
crawlin cruiser Registered User Join Date: Mar 2001 Member # 3760 Location: Kamloops BC Posts: 987	does an aftermarket propotioning valve make any difference to pedel hight? BTw I have a master from a 79 __________________ 83 BJ60 DD,74 FJ40 crawler Be Canadian, Eat beaver!!

11-21-2002, 09:57 AM	#6 (permalink)
dieselcruiserhead Registered User Join Date: Jul 2002 Member # 12758 Location: Park City, UT Posts: 4,651	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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