To ABS or not to ABS, that is the question

[lumbee1]

Update:

I had enough of the soft and squishy ABS system and removed the pump. I installed a Wilwood proportioning valve and stainless lines from caliper to axle on the front only. The rest of the stainless lines will be installed soon. While others that have deleted the ABS have reported there's no need for a proportioning valve, I would disagree. I have my valve 3 turns from full open and that keeps the rear tires from locking up. Full open or no proportioning with emergency stopping caused the rear to lock up and rotate pretty easily.

With all this work done, I now have consistent and powerful brake performance that gives me confidence I can stop.

 

[enox]

Can confirm. No abs here and no proportioning valve, I slam on the brakes and the rears lock up first.

But damn that pedal feels solid. I like that the rear locks up first, feels more controlled off road.

Ultimately I'd prefer an even 50/50 split or 40/60 wherever the most of the force/ weight is distributed. So slam on the brakes and all (4) brake evenly.

 

[lumbee1]

Can confirm. No abs here and no proportioning valve, I slam on the brakes and the rears lock up first.

But damn that pedal feels solid. I like that the rear locks up first, feels more controlled off road.

Ultimately I'd prefer an even 50/50 split or 40/60 wherever the most of the force/ weight is distributed. So slam on the brakes and all (4) brake evenly.

Wilwood proportioning valve turned 3 turns from full open will get all 4 brakes stopping evenly.

 

[enox]

Wilwood proportioning valve turned 3 turns from full open will get all 4 brakes stopping evenly.

And just add that onto the factory system? Which valve did you get and can you show us a pic of your install?

My interest has officially peaked....

 

[jcardona1]

And just add that onto the factory system? Which valve did you get and can you show us a pic of your install?

My interest has officially peaked....

This is my setup:

 

[enox]

This is my setup:

Which wilwood valve is that, if you don't mind posting the part #

I'm gonna jump on this bus

 

[jcardona1]

Which wilwood valve is that, if you don't mind posting the part #

I'm gonna jump on this bus

I'm using this one: Wilwood Disc Brakes - https://www.wilwood.com/mastercylinders/mastercylinderprod?itemno=260-12627

Do note this one is 10mm x 1.0 Bubble Flare, not inverted flare like our trucks. You will either need to cut and reflare your lines or run some inverted-to-bubble flare adapters. I'm using these: Brake Line Thread Adapter, Male M10 x 1 Bubble, Female M10 x 1 Inverted | eBay - https://www.ebay.com/itm/Brake-Line-Thread-Adapter-Male-M10-x-1-Bubble-Female-M10-x-1-Inverted/391200008314?hash=item5b1556687a:g:NVQAAOSwaTJeraa9

There are no 10mm x 1.0 inverted flare proportioning valves that I know of.

 

[enox]

I'm using this one: Wilwood Disc Brakes - https://www.wilwood.com/mastercylinders/mastercylinderprod?itemno=260-12627

Do note this one is 10mm x 1.0 Bubble Flare, not inverted flare like our trucks. You will either need to cut and reflare your lines or run some inverted-to-bubble flare adapters. I'm using these: Brake Line Thread Adapter, Male M10 x 1 Bubble, Female M10 x 1 Inverted | eBay - https://www.ebay.com/itm/Brake-Line-Thread-Adapter-Male-M10-x-1-Bubble-Female-M10-x-1-Inverted/391200008314?hash=item5b1556687a:g:NVQAAOSwaTJeraa9

There are no 10mm x 1.0 inverted flare proportioning valves that I know of.

Cool thanks, so if this valve just has 1 inlet and 1 outlet, how does it fit in the system?

Looking at your pics but I can't tell.

I know the master has (2) outlets, one for the rear single line, then the other front It's off for L&R.

 

[jcardona1]

Cool thanks, so if this valve just has 1 inlet and 1 outlet, how does it fit in the system?

Looking at your pics but I can't tell.

I know the master has (2) outlets, one for the rear single line, then the other front It's off for L&R.

The proportioning valve is for the rear circuit only. Just connect the rear port from the MC to the prop valve, the other side goes to the rear brakes.

 

[enox]

The proportioning valve is for the rear circuit only. Just connect the rear port from the MC to the prop valve, the other side goes to the rear brakes.

Ahhh that makes sense thank you!

 

[VivaToy]

Did OP ever diagnose the ABS code? Why wasn't that the first option?

For those who care, you can bleed the ABS pump by going on gravel road, getting it up to speed, and then engaging the ABS. Go home, bleed it, and then be amazed by the amount of crud coming out of the lines. A properly functioning ABS system is hard to beat.

 

[enox]

@jcardona1 & @lumbee1 THANK YOU - Im just waiting for those adapters and will install and bleed the system... Excited to get this set. thanks again!

 

[lumbee1]

@jcardona1 can you post how you mounted your charcoal canister in the ABS pump mount? I want to do the exact same thing. The ABS mount is worth more to me than the ABS pump.

 

[jcardona1]

@jcardona1 can you post how you mounted your charcoal canister in the ABS pump mount? I want to do the exact same thing. The ABS mount is worth more to me than the ABS pump.

I didn't use the ABS mount. I simply relocated the canister bracket and used whatever existing holes I could find. Worked quite well. I use the gap between the canister and outer fender to store a quart of oil.