finished tank installation
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Installing the Boyd Welding gas tank

This update covers the Boyd Welding gas tank.

Related notes live on the Factory Five Cobra build hub.

Boyd Welding gas tank: Positioning the Boyd tank

I chose the Boyd Welding MKIV roadster tank. Because many folks said a larger tank is great. Also, it is a fantastic design! My prior post was getting the tank ready for installation. So here we go!

First, I positioned the tank under the rear section. Then I used towels to protect the powder coating. Meanwhile, it is a tight fit that needs a little massaging. Also, getting the height correct is important. You might assume this is a two-person job. However, I got creative. So I used 4 bungee cables to hold the tank in place.

bungee tank
tank nearly finished but I used two bungees per side to hold the tank in place

Using the bungees holds the tank while I position the tabs. Then the rear of the tank lines up under the back of the frame. First, I measured about 4″ in from both sides for the bolts. Also, I used the same bolt and nut combo from the FFR tank straps. Next, I set the rear tab flush with the back of the chassis. Because that leaves enough front tab coverage for those connections. After that, I had to pull the tank to drill the tabs. Meanwhile, I do not have a 90″ drill chuck. Still, a step bit worked perfectly for this setup.

Bolting the tank down

Second, I mounted the rear tabs to keep the tank level. Then I used a level through a little trial and error. Ultimately, I got the tank 1.3″ all around under the “V” rails in the trunk. Also, the rear tabs are about .5″ wider than the 3/4″ rails. So I added a nut inside the tabs for space. As a result, that keeps the tabs from crushing. Meanwhile, the nyloc nut went on the ends outside the tabs.

rear tank mount
rear tank mount

Finally, it only takes 4 bolts to mount this tank. Also, it looks great IMHO. Besides that, I gain another 10 gallons of range for the roadster. Meanwhile, I may do a mini-drop trunk mod for a little more trunk space. It is not much. Still, every bit helps in this trunk! Ultimately, this tank should reach over 400 miles per fill with highway driving.

finished tank installation
finished tank installation

Overall, I am very happy with the install! First, it is a quality built tank. Also, it does not need much modification. Then I get more miles per tank. Besides that, I gain a solid fuel pump to feed the Coyote Gen3.

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