Hybrid reverse flow/direct heat design from 275 gallon oil tank

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tyronethompson

Newbie
Original poster
Aug 4, 2022
3
2
Hi,

I have finally decided to make this happen, I have had a 275 gallon oil tank in my yard and I have finally got the oil out so its time to get it ready to smoke. My apologies up front because I am an engineer and overthink everything (which is why I have had this tank for over a decade) so please bear with me.

I have been looking at reverse flow designs and as I look at the oil tank and my limited budget I came across this:
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on youtube where he did a santa maria style fire box on the right half on the inside with everything fully open and pulls the heat across the meat with the stack on the left. I like the idea of not having to make and attach a separate firebox so here is what I would like to do.

My idea is to put a baffle plate across the bottom make a firebox in the lower part of the tank to one side and do a reverse flow. Since I am taking away part of the cooking space to do the firebox the numbers roughly work according to Feldon's Calculator, but I still have some questions about making this work.

1. If I end the firebox where the oil tank sides begin to straighten (about 13-14 inches) is that height too low for the firebox?

2. Can the firebox opening continue right into the reverse flow or do I need a specific baffle or something to end firebox?

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Above is a picture of what I am thinking about doing. The right is where the firebox is the reverse flow plate is the lighter color and the red are expanded metal cooking grates. In a later post I will get to the reasoning for the firebox opening to the side, essentially I am looking to do some direct cooking on this as well just using the right side and closing off the rest.

Any thoughts are appreciated. Thanks.
 
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