Adding weight to the rear

I purchased a CBI off-road rear bumper that’s fully steel and I’m curious as to what route I should take to have my back end support the added weight.I have not installed the bumper yet as I’m curious if I should lift it first, or after what do you guys recommend should I do AAL, or completely new leaf spring kit, or as 4wp recommended, air bags. Which would be the better bet? Or hopefully you guys could give me a better idea. I’m on a budget.

 

I installed my CBI HCRB and didn't notice any sag. I believe the HCRB is about 120 lbs I'd just wait get the bumper and see if it sags. If so get an AAL.

 

Like stated above. Its likely not any heavier than you, or a friend/ relative. Have someone bump in the back, or on the open tailgate and measure the before and after. I’m gonna guess it won’t sag much, if at all.

 

It’s the T3 with the swing out tire mount. 208lbs without spare

 

You can go with a 3 Leaf aal and keep the overload spring in the pack. A new pack is usually the better alternative as Toyota isn’t known for having great leaf springs.

 

Right on thanks man

 

In previous discussion on TW, members had offered measurements on the amount of rear end drop with weight in the bed.

I checked it out incrementally with water in buckets and ice chests, placing around 800 pounds in the bed and I think it was about 1.75 inches of drop.

So, I figured about 1/2 inch of drop for each 200 pounds up to about 800 pounds.

 

This is great thank you so much for that study.

 

Good experiment but keep on mind its a bumper hanging off the rear... lots of leverage. Also try it on the tailgate and it becomes quite a bit more than weight in the bed. My bike rack and loads I take during camping easily pushed down 2” on my last trip, even with my single AAL and intact overload. The 3 AAL + overload should do it though, and as for airbags, get Daystar bag cradles for them if you do go that route. I tow a trailer and really happy that I went the airbag route as I often change load amounts and tow, and offroad too so I put Daystars on as well.

 

Yep, I agree with you. I only had that weight evenly distributed over the rear axle, and not all towards the rear end or back bumper.

Airbags seem like the way to go if you want to keep ride quality while also having the ability to adjust the height.

 

Did the wires for the hitch and sensors reach? I saw someone with that bumper and they said the OEM wiring was not long enough

 

My hitch wiring loom had to be released up to about the level of the cab but it reached.

 

What should I do if there are no holes for sensors, but my truck is equipped with them? I don’t really care if I lose the sensors but what could I or should I do in that aspect of the install? Could I disconnect them and run it like that or should I drill holes and re mount them

 

I'm running about 300lbs with bed mat, metal bumper and some other stuff. It dropped about 1/2 inch, so I'm putting an AAL on and I'll see where I'm at. I've already put on Bilstein 5100s all around and the front at .6" lift (with slim bumper and winch 150lbs it's back to stock height), so I don't want to take them out again to level.

Might just have to load some more weight in the bed because I know the back will be 1-2" higher than the front. I could live with 1" rake, but not 2".

Actually, I'm almost into my second pt beer, so going to tackle the AAL right now.

 

Is that .06 of an inch or did you lift it 6 inches also is your rear end stock height currently before your second beer and AAL?

 

Let me know the AALs do with the rear. If it helps

 

Well that was a bitch, I forgot how heavy leaf springs are! Plus I stripped a center bolt, had to do some fabrication.

The AAL definitely lifted it at least 1.5”. I’ll drive it around tomorrow and see where it settles.

If it stays like this I’m about 1” over stock in the back and stock height in the front so a 2” rake taller in the back which is too much. I’ll need to level more and raise the front another .5”, don’t really want to take my shocks and springs out again, getting too old.

 

Load it up and give it a bit of time while you’re waiting - a week or so with some bumpy roads thrown in too, then empty it and remeasure the rake.

 

Yeah, that’s a good idea, but I think it’ll be quite higher than the front.

I’ve been waiting to do the ECGS on the front so it may give me another reason to raise the it a bit while I’m at it.

 

I think loading it and driving a bit will give you a better measurement for adjusting the rake in front. It will be nice when you are finished!