Official Crawlbox BS thread!

Yeah, I pretty much dont hear any gear whine or howling, but you do get the stethoscope effect with 2 extra rods radiating in the cab, and 2 more holes cut in the floor. I hear my rear diff howl (done it since new, just 3rd gen things) more than the trans/cases.

 

Have you gotten to take it out yet?

 

It's still in the shop but it runs and drives now. It went on a 40mi trip this weekend.

Only issue so far: we swapped the ECU and on the first crank it was idling at 2k rpm (probably due to learning procedures within the ECU), went to put the trans in D and the NWF box kicked into neutral for some reason. We just clicked it back into Hi and it was fine. My installer said his Marlin unit did the same thing occasionally when there was a high idle scenario.

Edit - PFA

 

I like it! Who made that Y-Pipe?

 

Brockett built

 

Just incase someone lurking this thread was looking for a Tacobox. https://www.fjcruiserforums.com/thr...box-transfer-case-doubler.762727/post-9591160 pretty solid deal. Had this popped up a month ago before I put in my NWF order, I may have gone this route.

 

One lesson I have learned with my completed crawlbox..... Is to shift "softer". 1st time out the NWF TC ended up stuck in low, and required a expensive tow back home. But thankfully it's fixed, and I'm back on the road.

 

pics of under trim please. How did you fit the parking brake, and all 3 sticks in front of the auto shifter. I struggled to mak that shit fit with 2 on the side and one up front. I did mine in the first batch and the triplle shifter from NWF was ready yet.

 

May need to take my crawlboxes a part.

Anyone have a recommendation on which full gasket and seal kit should I get?
OEM from trail gear, my crawlboxes are from trail gear?
Marlin's paper and felt ones with their ecoseal?
Yotamasters?

 

silicone

 

rtv for gear oil, its better than the grey rtv stuff. I don’t have any paper/felt gasket for my assembly but I am running the mc ecoseal

 

Hopes and prayers.

 

aint that the truth.

i have found that using rtv and letting that shit cure before pouring gear oil in immediately does a lot better.

 

The red gasket maker from Toyota and get the surface super clean. Torque to spec. Worked for

 

Although mine leaks out the breather hole. Check to see if it is from the top. Could just be from the shifters or breather hole

 

if that shit ain’t leaking, you’re not using it as intended.

 

I found a good level where not much came out the top.
But then they started singing.
First thought was it mustn't be enough and I sure messed them up.
Found some auto trans fluid in them.
Some bad bearings.

 

how many miles on the boxes since the install?

 

A bit over 30k miles

Edit: And 12qts of oil
Joking

 

Which bearing went bad? Oil starvation causing excessive heat?