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Found a pic. Not of the crap I did, but the exact vehicle. Gradall 4100. Took a 8.3 liter mechanical Cummins, C series, like in the 5T trucks, engine out of the drive chassis and installed a 9liter, full electronic, DOC, DPF, SCR in it and for the upper took a 5.9 mechanical 12 valve out and...

Maybe, it will be OK. The stuff I did the shortening on were in Manitowoc cranes. The engine was isolated just like yours, and the exhaust was hard mounted to the chassis. The engine was allowed to vibrate and the shortened bellows was enough to let the engine do what it did. No torqueing like...

Muffler is hard mounted to the engine, correct? If so, some type of flex should be about where the circle is IF the pipe is the one that exits the muffler.

That used to be done all the time, mostly on V8, V6 engines, long sweeps to the muffler. The flex will not make a sharp bend, but, there are short bellows type straight sections that can be installed at the inlet and outlet of the bend. I'll see if I can dig up a picture. When the engine torques...

Just be aware, you will most likely need to add some sort of flex between the hard engine mounted parts and the chassis/fender mounted stuff. It will break at some point in time just due to the acceleration twist. Your work is beautiful!

Looks good!

The gaskets are the same for both port sizes. Does it run yet I want to see a video!

You can trim up to an inch off of the rubber elbows to gain clearance if needed. I had to do that many times when putting new engines in old machines. Mark them, use silicone spray to lube the cut and a new razor knife. The cuts will look factory.

STP works wonders when assembling the fittings. You can use regular push on hose too. The only pressure there is what the radiator cap pressure is, 10 psi or so

Both of you guys have done an amazing job! You might want to think about putting some flex between the hard engine mounted components and the body/cab mounts. 12 inches is the minimum needed. If no flex is used, things like to crack, usually flange of the pipe to turbo, but the muffler and...