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  #21  
Old 10-27-2019, 09:06 PM
TubularFab TubularFab is offline
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I have had no luck finding a place willing to put this block in a wheelabrator. Nor have I been able to find a local shop to vat it. So I soaked it down with naval jelly and got most of the rust off inside and out. But - I wasnít happy with it - it did not not want to clean off afterward! So, on to plan B. I had a heavy plastic barrel that it seemed like the block would fit in on end. I mounted an electric heating element from a hot tub in the bottom then made a stainless platform to sit just above it. The block just fit... Filled it with water and 5 gallon bucket of Zep purple cleaner ($36) from Home Depot. Itís a strong base - sodium hydroxide. The heater easily gets it to 150 degrees and it wasnít long before all the naval jelly residue was gone. This is cleaning the air box carbon that the vatting I had done years ago didnít get!
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  #22  
Old 10-27-2019, 09:39 PM
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Now that's using your noggin! Buddy of mine did sorta the same thing, he used a large stock tub and Purple Power, and he used the element out of a hot water heater. He also used an aquarium air bubbler pump to keep the mixture moving a bit. He cleaned a V6 Chevy block and heads and they came out looking like they had just been forged.
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  #23  
Old 10-27-2019, 11:13 PM
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It's amazing how well a concentrated Sodium Hydroxide solution cleans. At my last job I had some glassware that you could not clean for the life of you, concentrated NaOH solved that problem easily!
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  #24  
Old 10-29-2019, 12:54 PM
TubularFab TubularFab is offline
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I'm back to doing the frame rails in round, mandrel bent tubing. Mandrel bending is the niche that my fab shop specializes in, so I have to utilize it some! Looking at doing a pair of 3" OD tubes per side, doubled up to basically make a 3 x 6 rail. I am going to channel the outside of the cab so it sits down into the frame, but leaving the frame exposed to the outside. By bending the tube I can match the contour of the cab very close.

Here is a screen shot of the frame I'm working out in CAD. I wish I could keep the overall length a little shorter, but it's just not happening with a longish engine and trans plus the cab extension.


For scale, the top of the "sleeper" is about 58" high and the wheelbase is 146"
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  #25  
Old 10-29-2019, 01:35 PM
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Interesting design. Looking forward to seeing it live.
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  #26  
Old 11-01-2019, 04:43 PM
TubularFab TubularFab is offline
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The home brew block vat was quite successful! It came out very clean and now has paint on the outside and WD40 on the inside. This is major progress towards assembling it!

After pulling the block out I set a front timing cover in the hot vat. It had grease 1/2 thick on it (diesel grease - very black!) and old paint. The tank was at 150 degrees. After 5 minutes the grease was gone and 1/2 the paint, too. I need to make a small parts basket and put this thing to work on the rest of the parts!

Here are a few pics of the after and one from before.
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  #27  
Old 11-01-2019, 06:54 PM
kenny c kenny c is offline
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Looks real nice.
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  #28  
Old 11-01-2019, 08:20 PM
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Torchie
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  #29  
Old 11-08-2019, 08:09 PM
TubularFab TubularFab is offline
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Tubing has been bought, cut, and bent. It’s officially under construction now!

It’s a less conventional design for sure. Using 2” schedule 40 pipe (2.375” OD x .154 wall) and mandrel bending it. It will fit around the outside of the cab. Doing some of that engineering stuff tells me that the way I’m using it it’s more than twice as strong at the weakest point on the chassis than a 2” x 4” rectangular tube, but only a little bit heavier per foot. It’s bending really nice!

Last edited by TubularFab; 11-08-2019 at 08:52 PM.
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  #30  
Old 11-08-2019, 09:55 PM
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