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This must be some sort of hardened steel because my brand new drill bits had a hard time getting through it. Making these brackets out of 1/4" seems kinda overkill right now, but that's how the rest of the truck is anyways. I think 3/16" would have been perfect. These parts are also...

To support the weight of the stack with all of its leverage on the pipes and the pipes downstream of the muffler I decided to tie into the large fender support structure. With the muffler moving along with the engine vibrations and rocking and with the fender support being stationary I built in...

With the cardboard version looking close enough I got the parts laser cut out of 1/4" steel, then I deburred and polished the edges and had it bent up at work. I was able to talk a friend into MIG welding the pieces together and it turned out sick! Below are the only pics I have of making...

One of the TIG welders at work had these cool pipe stands that just made the setup super simple and dead nuts on. I'd never seen them in use before. This time I ground off more aluminization and it turned out better. Now this curve can be clamped on to the muffler so that all the pipes...

Next in line is the muffler which needed to be mounted as far forward as I could get and still leave the muffler clamps a straight piece of pipe to seal against. I ended up nibbling off about 5/8" off of each end of the muffler to get it to fit how I wanted. This included first extending the...

After much searching I was finally able to find the perfect 5" 180° mandrel u-bend pipe off of a seller on ebay (automods_llc) to come off of the turbo outlet. I wasn't sure if I would have to hack-n-whack to make it work but I figured this was the tightest I could find and I would have the...

With the pressure pipes fitted and cut to length it's time to roll some beads! A friend from work happened to have a bead roller that he had never used and broke it out just for my pipes! By the third pipe we finally got the hang of how to steer the pipe and locate the bead while we rolled...

This is the basic aluminum pressure pipe routing before I cut any pipes to length. Starting at the lower left and going clockwise there is a 3.5" 90° elbow, a 3.5" straight pipe, a 3.5" 90° elbow, a 3.5" 45° mandrel bent pipe, a 3.5" to 4" reducer 90° elbow, a 4" straight pipe, and lastly a 4"...

In an effort to compensate for the power loss of running 16.00-20s (still a future mod), I started accumulating parts for adding a turbo to my NHC-250. The direction I'm going is nothing new as @Lonnie has already laid the ground work for the turbo layout I'm using, but I was also inspired by...

It would make an awesome video to see those fire up and drive out under their own power!

Nice work! I'm sure your son had some choice words to describe the effort required. Even though you can't see it, in your mind you'll appreciate having it hooked up - especially when it gets cold again. It's 111° at my house right now so thinking about my heater makes my grimmice...

I had to try and thread or twist mine on since the reinforcement wire is spiral like a bolt thread. Getting the wire tip onto the duct opening, then twisting the hose on and then attaching the other end to the diverter box later seemed to work but it wasn't easy. Tore up my hands real good and...

I got the jake brakes from Stour 2 LLC http://www.stour2.com/ The jake head to rocker box seals I got from Cummins and the gaskets were Interstate McBee Edit: to clarify, the jake brakes i got came in a kit that included all the studs, nuts, rocker arms, and everything but the 3 hollow set screws.

What all did you do to the engine?

I design the data plates (size, shape, font, verbiage, etc.) and then I send the digital files to a data plate maker who produces them and ships them back. If you want to get some made send me a PM 🙂

I replaced one of my knuckle boots...what a pain. It may have been quicker to disassemble the king pins & everything & do it from the inside. The TM said the zipper material should be on the inside but these new ones must have been made backwards.

It ended up taking quite a bit longer than I wanted, but overall it was a fun project and it was the good kind of challenging.

Brutacus, I'm glad you got your parts in good order and thank you for the kind words! That is quite the collection of lights I must say. At a casual glance it's hard to know all that went in to making those light brackets and there were many steps involved. For the aux. driving light brackets...

In regards to manuals printed in the early 70s versus the updated manuals from the mid-80s, what are the differences? Are the changes usually procedural or are they changes in parts/construction of the truck? Mostly interested in the -34 manuals. Also, is anyone familiar with a -35P manual?

I don't understand how vinyl can rust, but the inside top of my cover has a lot of rust spots. Maybe left over minerals from hard water is what is rusting? Metallics in the paint? No clue. Has anyone found an effective way to remove the rust? Like CLR or something?