I wasn't going to post this until it was in the car working, but whatevs. I've heard that plastic breathes and that's probably part of why the RCI fuel cell leaked vapor, but not fuel. Apparently plastic fuel cells aren't good for trunks. Anyone want to buy it real cheap? let me know!
the main part of the fuel cell bent up with some excess on it
the sump. the small hole is where the AN fitting now is, the big hole is on the inside. the idea is that under hard braking or cornering, fuel can't spill out of there as easy to make pump starvation even less likely than it would be otherwise. the hole probably should have been smaller, but oh well.
Baffles to reduce side to side sloshing:
All TIG welded up, pressure testing. Some ugly tacks and not horrible looking mig beads patched up the flaws that I found with the pressure testing. Took like 4 tries.
Steezy angle iron mounting tab:
expensive cap and filler neck setup, Tim from German Master Tech gave me a discount though, cause he's the man!
side view
strut bar and fuel cell mounting studs. both things cost me pretty much nothing
don't knock my welds too much, it was hard to reach this, especially since I had to lay in the trunk. I wanted to be able to kind of show you the little plates.
the mounting studs are used 8.8 bolts from one of both of the E21's I've owned welded on hole saw cutouts from the fuel cell baffles.
I'm a little disappointed with how much the tank warped when I welded it and with the fact that I was just starting to get the hang of TIGing thinner metal towards the end of this project. Oh well, that's how you learn I guess. The tank has some liner in it that's curing, I should be painting it, installing and filling it before the end of the week!
the main part of the fuel cell bent up with some excess on it
the sump. the small hole is where the AN fitting now is, the big hole is on the inside. the idea is that under hard braking or cornering, fuel can't spill out of there as easy to make pump starvation even less likely than it would be otherwise. the hole probably should have been smaller, but oh well.
Baffles to reduce side to side sloshing:
All TIG welded up, pressure testing. Some ugly tacks and not horrible looking mig beads patched up the flaws that I found with the pressure testing. Took like 4 tries.
Steezy angle iron mounting tab:
expensive cap and filler neck setup, Tim from German Master Tech gave me a discount though, cause he's the man!
side view
strut bar and fuel cell mounting studs. both things cost me pretty much nothing
don't knock my welds too much, it was hard to reach this, especially since I had to lay in the trunk. I wanted to be able to kind of show you the little plates.
the mounting studs are used 8.8 bolts from one of both of the E21's I've owned welded on hole saw cutouts from the fuel cell baffles.
I'm a little disappointed with how much the tank warped when I welded it and with the fact that I was just starting to get the hang of TIGing thinner metal towards the end of this project. Oh well, that's how you learn I guess. The tank has some liner in it that's curing, I should be painting it, installing and filling it before the end of the week!
He later asked me if the two stroke oil I added in the tank was to help with fuel mileage... my response stating that the car has a rotary with no oil injection on it really confused him and ended the conversation. 
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