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| Video: Testing baffled and sumped fuel tanks https://www.slantsix.org/forum/viewtopic.php?t=68504 |
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| Author: | MadScientistMatt [ Sat Jan 17, 2026 7:32 am ] |
| Post subject: | Video: Testing baffled and sumped fuel tanks |
Baffles or sumps can help avoid losing fuel pressure while cornering with EFI. This is a quick video I put together where I have tested a couple model fuel tanks to demonstrate the basics of how baffles and sumps work, and how you can test out more advanced ideas on your own if you want to give it a try. Baffled fuel tanks on YouTube |
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| Author: | Dart270 [ Sun Jan 18, 2026 8:17 am ] |
| Post subject: | Re: Video: Testing baffled and sumped fuel tanks |
Nice and simple. Thanks, Matt. Lou |
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| Author: | MadScientistMatt [ Wed Jan 21, 2026 5:04 pm ] |
| Post subject: | Re: Video: Testing baffled and sumped fuel tanks |
You're welcome. Since I've mostly just been driving the Dart lately and looking to see if anything needs fixing, I needed a different subject for a tech video than just me working on the car. Youtube has an "AI brainstorm ideas" feature, and most of the ideas were terrible, but it did mention an idea about baffled fuel tanks and I realized I could demonstrate that with a shoestring budget. I'm glad you liked the video. |
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| Author: | lgu32 [ Mon Jan 26, 2026 10:36 pm ] |
| Post subject: | Re: Video: Testing baffled and sumped fuel tanks |
Have you tried to made baffles to a complete tank? I think it would be quite a complex work to get running. At least a lot of welding for it.  In the picture at the side of the radiator I have a surge tank. I will solve the same problem but totally different way. All the bubbles coming from rear tank are separated at the surge tank for fast return to rear tank. I did this because I didnt want install anything new to original tank. |
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| Author: | MadScientistMatt [ Sat Jan 31, 2026 8:19 am ] |
| Post subject: | Re: Video: Testing baffled and sumped fuel tanks |
Yes - my Dart has a bread loaf pan from Wal-Mart welded underneath the fuel tank. I finally had to use some epoxy to get the last of the pinhole leaks as my welding skills aren't the greatest. The oil pan baffles were a lot easier since I just had to tack weld that (which started out as a cookie sheet, making for two pieces of cookware that found their way into my car). |
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| Author: | lgu32 [ Sat Jan 31, 2026 10:09 am ] |
| Post subject: | Re: Video: Testing baffled and sumped fuel tanks |
Ok. I did once a fix for a 50cc minimoto fuel tank with mig welder. Found that complex with my welding skills. There is many ways to get the same end result. When I build my 1st fuel injection system to my -66 I was doing it in a garage where such a fuel tank removal was difficult. So I chose the straight way. I kept the original mechanical fuel pump for circulation between main and surge tanks. Do you have or do you build return line to tank? |
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