Let's see your hydraulic bump stops

Is it possible to set up the pressure where it is high enough to handle some high speed hits, yet low enough to compress all the way in the slow crawling stuff? Will an air bump bleed off pressure with a slow shaft speed/velocity such as like a shock does?

 

I mean you could let some pressure out when wheeling and even use CO2 on trail to put it back up for high speed stuff.

 

That’s something I’m not willing to do. I just can’t find an answer as to whether or not air bumps are velocity driven as far as pressure goes.

 

I mean you're compressing gas in a closed system - the gas doesn't have anywhere to go besides compressing from the shaft going into the body. The pressure will match the how much the bump is compressed regardless of speed. There's simply more force from a fast hit from the axle than moving slowly during crawling. Setting bump height and shortening the super bumps might be what helps if you're never bottoming out even on fast stuff. I'm not sure what you're referencing about shocks "bleeding off pressure."

 

I think this is what I was looking for. Thanks

 

How are those foa bumps holding up? Read a lot of bad reviews on their shocks/coilovers but not their bumps.

 

so there are three ways to tune a hydraulic bump:
1) nitro pressure. This is the one most people think about. And is the easiest to do and will be what you will be dialing in on the trail testing

2) oil fill level... the higher your oil fill level, the stiffer the final bump inch will be. Oil isn’t going to compress so if you have less oil you will have a “softer brake pedal”. The more oil the stiffer, harder the brake pedal.

3) valving it. If you have a good bump like ads, king and fox. You can valve the bump just like you can have a shock valved. So stiffer valving for high speed stuff etc.. finding a tuner who knows what they are doing there is a little more tricky... but they are out there.

 

So cheating. Not a Tacoma but so very similar

 

Getting the bump stops set. 1.5" of shaft will be showing on the coilovers/bypasses at full bump.

 

Bit of a, long-shot-question. I don’t have a swaybar, so I’m wondering. Would hydro bump stops set at a stiffer setting help control the sway in the truck? I wheel too often to keep it on. I’ll be replacing my shocks too, just wondering if this could also help.

 

Yes. When they are placed on the lower control arm, they effect the travel very early.

my first set of bumps were too long and initially set up with too high of psi.
On the street and freeway the truck drove awesome lol.
Off road it was a pogo stick ghat wanted to kill me.
And I’m talking only 115 psi. I lowered it to 80psi. They were junk bumps. But that’s a different story.

now I’m running kings and king bumps. So I’ve lowered the front bumps to 50 psi.

so short story is yes, they will restrict roll of running high psi.

 

Awesome, thank you!
Time for some extensive research!

 

Anybody have experience with any of the 3rd gen bolt on rear air bump mount kits? Just looking to see if any one is better than another, or all about the same.

I can see the TC and Camburg have mount kits available, probably more that I could not find easily.

Setup is/will be J66, Hammer hangers / Fox 2.0 bumps etc. Essentially making an Accutune 1A long travel rear kit with parts I have already accumulated, though I would still consider this to be mid travel since its still SOA

 

No copying!

 

No worries, I will be looking to you for shocks soon. I have Fox extended DSC front coils that could use a re-valve as well.

 

If money wasn’t a factor, are there any performance gains with these in the rear if I never jump the truck? I just ordered archives 2.0 towers and Fox 14”.. this thing will never catch air, just slow rock crawling and long highway miles.

I was looking at locked-off roads kit for the rear and looks enticing.

 

Mostly overkill, especially if you are not doing aggressive high speed off-roading in the desert. If your shocks are valved properly, you should only bottom out once in a while with moderate off-road driving. You shouldn't rely on air bumps as a secondary shock. Also, with trucks being so light in the back, adding an air bump can make it very harsh. IMO, for most Tacoma builds we see and work on, air bumps front and rear are not necessary for performance gains.

 

Thank you! Really appreciate the response

 

2.0x4 bumpppps running 12s

 

Do you trust that bump stop pad
I wouldn’t