superduty prerunner project

backwoodsboy · Dec 11, 2013

I don't know then man...half just throwing things out there and half curious.
So with the Carli kit the front spring hanger is moved forward from stock to accommodate the longer leaf pack, and the rear remains in the same location? Or are both spring hangers moved?
I'd be really curious to see footage from a go-pro or something similar mounted under the truck watching articulation during a high speed run as well as torquing the axle with the brakes set. Should give a pretty good idea if axle wrap is your issue.

Cutting-Edge Diesel · Dec 11, 2013

No I moved the front mount. Used a PMF bracket.

SSpeeDEMONSS · Dec 11, 2013

backwoodsboy said:
I had a truck with similar issues after swapping leafs in the rear.
Static ride height the axle was completely centered. Under bump the axle would shift forward.
After a whole lot of screwing around we decided that the shackle length was too long. Basically the longer shackle was increasing pinion angle right off the bat and having the shackle at the rear was causing the axle center-line to shift forward under bump. Both were contributing to bind in the drive-train.

I'm sure I'm over thinking things, and you've just got a little bit of axle wrap going on, but that's how my brain work.

Did you do anything to the shackles when installing the Deavers?

Were the springs going into a negative arch during bump?

Garrett

probably getting paid at work to post this from my POS phone

Cutting-Edge Diesel · Dec 12, 2013

The rear feels kinda pogo like sometimes when you go over a bump and it unloads the supention and looses traction. Not sure why it's doing that.

SSpeeDEMONSS · Dec 12, 2013

Are the rear shocks valved for those springs and your weight? Put the gopro under the truck pointing towards the axle and spring and drive it. See what is happening, not from a valving standpoint but to see how much axle wrap there is when loading and unloading over bumps.

Garrett

probably getting paid at work to post this from my POS phone

Cutting-Edge Diesel · Dec 12, 2013

Should be

Cutting-Edge Diesel · Dec 12, 2013

Carli custom valves them for superdutys

Twinturbostroker · Dec 12, 2013

Cutting-Edge Diesel said:
The rear feels kinda pogo like sometimes when you go over a bump and it unloads the supention and looses traction. Not sure why it's doing that.

One of them could be leaking nitrogen, especially with it being colder lately

Cutting-Edge Diesel · Dec 12, 2013

I was wondering about that. I need to get a gauge so I can check them anyway.

Soooo I guess I lost my gopro case out the back of my truck so I'm going to have to get a case before I can film it :doh:

Coxey Diesel · Dec 12, 2013

lol at this truck getting me free chit

Powerstroke214 · Dec 12, 2013

Coxey Diesel said:
lol at this truck getting me free chit

Lucky ***ker! Lol

Sent from my iPhone using Tapatalk

Twinturbostroker · Dec 12, 2013

Cutting-Edge Diesel said:
I was wondering about that. I need to get a gauge so I can check them anyway.

Yea I learned how to do that the hard way........check'em with gauge, doesn't quite mean "check it with an air gauge" LOL

Cutting-Edge Diesel · Dec 12, 2013

Haha yeah 200psi is a little higher than anything I have goes

Twinturbostroker · Dec 12, 2013

Cutting-Edge Diesel said:
Haha yeah 200psi is a little higher than anything I have goes

Yea, but its not at simple as just putting the gauge to it. There is so little volume in the shocks that checking the pressure like you would with a tire gauge will change the pressure substantially. Fox gauge runs about $65 and works pretty well, but you will still lose a great deal of pressure just checking them. It's best to have a nitrogen bottle with inert gas regulator to check them......

O2ShootTheJ · Dec 12, 2013

Coxey Diesel said:
lol at this truck getting me free chit

huh?

Coxey Diesel · Dec 12, 2013

O2ShootTheJ said:
huh?

Lightforce lights thought it was funny that I mentioned how the round lights separated it from all the mall crawlers running bars.

Cutting-Edge Diesel · Dec 12, 2013

I don't know how we are going to get our free stuff tho haha

Coxey Diesel · Dec 12, 2013

Cutting-Edge Diesel said:
I don't know how we are going to get our free stuff tho haha

Haha or what it may be

Cutting-Edge Diesel · Dec 13, 2013

soooo I had to pull a calf in a pasture and all of our ranch trucks were in use or had a flat tire. So I took the pre runner out in the pasture. Well when I got there she had decided to relocate and we had to look for her (640 acres) in uneven hilly ground with alot of rocks all over. anyway on the way back home the thing rode better than it has been. kinda what it was like a few weeks ago. Not sure if shock temp plays a role in it?