12' Gecko Build

jeeeep said:
dual piston? is has 2 bleeder screws?
are you bleeding them both?
Click to expand...

IIRC these calipers are from a Ram 3500 - one bleeder.

Going to these heavy axles is an eye-opener. You've just increased your un-sprung weight by probably 50-75%. You're really going to notice even with your LS/LT. Driving mine is an exercise in patience. It's not horrible, it's just a totally different driving experience.

My E-brake has always been meh, but after all it's an e-brake - be a man - just hang on & ride it out
 
Tried one more thing for the night. I hooked up the motive power bleeder to do another few rounds of ABS bleeding. Visually a few bubbles but no real change in the pedal on a test drive. I mean it does stop i just have to go to 90% pedal if I want more than a gentle slow down. Its good enough for now for me to address other clean up items and ill come back to it.

Still need to center the steering wheel
Need to run my air locker lines
Need to change the bolt pattern so I can mount my spare
Need to shave my steering stops
 
desertrunner said:
Dual piston one bleeder

View attachment 427363
Click to expand...
wondering if air is trapped in the bottom piston (it shouldn't but...), I'd try a couple of other things:

1. reverse fill the caliper, using an extraction syringe and hose to fit the syringe and bleeder valve tight, force brake fluid up to the reservoir.
Leave the reservoir cover loose (cover stuff around it because too much pressure too fast from the syringe and it'll geyser out of the reservoir) good to have a helper watch for flow and air bubbles.
Slowly press the syringe to force brake fluid back to the reservoir starting with the furthest caliper.

2. loosen the banjo bolt and reverse fill the caliper

3. remove the caliper, flip it upside down, use pucks or a caliper tool to keep the pistons from popping out while you bleed it.
 
Got your DM and thought I would post up my response here just so that others can read it as well. That said, I don't know exactly what you're feeling or how bad or not so bad it really is BUT, a soft pedal is totally normal with a set of Dynatracs or at least, on a JK. Based on what I'm hearing from you, guess the same is true with what you have. The only 1-tons I've not had this problem is with UD60s.
 
wayoflife said:
Got your DM and thought I would post up my response here just so that others can read it as well. That said, I don't know exactly what you're feeling or how bad or not so bad it really is BUT, a soft pedal is totally normal with a set of Dynatracs or at least, on a JK. Based on what I'm hearing from you, guess the same is true with what you have. The only 1-tons I've not had this problem is with UD60s.
Click to expand...
That's surprising, is it because the stock JK master and booster are not pushing enough fluid?

Maybe this Mopar master and booster for Dana 60 axles is what's needed?

www.quadratec.com

Mopar P5160050 Brake Master Cylinder & Booster for 15-18 Jeep Wrangler JK with Dana 60 Axle

Engineered for Dana 60 Axles: This Mopar kit is specifically calibrated for the increased braking demands of Jeep Wrangler JKs outfitted with the Dana 60 axle. The larger 1.
www.quadratec.com www.quadratec.com
 
jeeeep said:
That's surprising, is it because the stock JK master and booster are not pushing enough fluid?

Maybe this Mopar master and booster for Dana 60 axles is what's needed?

www.quadratec.com

Mopar P5160050 Brake Master Cylinder & Booster for 15-18 Jeep Wrangler JK with Dana 60 Axle

Engineered for Dana 60 Axles: This Mopar kit is specifically calibrated for the increased braking demands of Jeep Wrangler JKs outfitted with the Dana 60 axle. The larger 1.
www.quadratec.com www.quadratec.com
Click to expand...
That would be my guess. Moby's pedal has always felt soft after getting ProRocks but I've just learned to deal with it. Stops fine, just doesn't feel great. I've seen this on lots of JK's with ProRocks.
 
wayoflife said:
Got your DM and thought I would post up my response here just so that others can read it as well. That said, I don't know exactly what you're feeling or how bad or not so bad it really is BUT, a soft pedal is totally normal with a set of Dynatracs or at least, on a JK. Based on what I'm hearing from you, guess the same is true with what you have. The only 1-tons I've not had this problem is with UD60s.
Click to expand...

Thanks!
totally possible that what i have it just what its gonna feel like. Its good enough to drove on the road so ill take it for now maybe try it a few more times later.

Wonder what about the UDs are different. When i was comparing the 3 i really dont remember any stand out difference in the brakes

Anyone with 1 tons in Albuquerque wanna compare brakes? 🤣
 
Ddays said:
IIRC these calipers are from a Ram 3500 - one bleeder.

Going to these heavy axles is an eye-opener. You've just increased your un-sprung weight by probably 50-75%. You're really going to notice even with your LS/LT. Driving mine is an exercise in patience. It's not horrible, it's just a totally different driving experience.

My E-brake has always been meh, but after all it's an e-brake - be a man - just hang on & ride it out
Click to expand...

Did you use the fusion Ebrake cables?
My initial hack at it just looks like the jeep e brake handle just doesn't pull long enough to really set the brake.
 
jeeeep said:
That's surprising, is it because the stock JK master and booster are not pushing enough fluid?

Maybe this Mopar master and booster for Dana 60 axles is what's needed?

www.quadratec.com

Mopar P5160050 Brake Master Cylinder & Booster for 15-18 Jeep Wrangler JK with Dana 60 Axle

Engineered for Dana 60 Axles: This Mopar kit is specifically calibrated for the increased braking demands of Jeep Wrangler JKs outfitted with the Dana 60 axle. The larger 1.
www.quadratec.com www.quadratec.com
Click to expand...


I have this (J8 kit) and still long pedal travel

desertrunner said:
Did you use the fusion Ebrake cables?
My initial hack at it just looks like the jeep e brake handle just doesn't pull long enough to really set the brake.
Click to expand...

Yep, probably my only reel complaint with the Fusion setup, but it seems everyone else has this issue. I never bother with it.
 
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