Classic AquaSport
Aquasport Mechanicals - things that need a wrench, screwdriver or multimeter => Fuel tanks and anything about fuel systems => Topic started by: redtail14 on October 24, 2023, 09:51:29 AM
-
Opinion on replacement fuel tanks.. Poly (does the material react with foam around it) or stay with aluminum... Just took the original 1972 aluminum one out.
@deepdivespearcrew1348 on youtube
-
Poly reacts to gasoline and grows 1-2% in all directions when initially exposed to gas. You have to allow for this growth. It grows but doesn't shrink back. Poly also leaches out gas fumes. Just so you know.
-
Do you know if AS used foam to secure their poly tanks or secure it by other means?
-
That I can't tell you but I'm sure some of our members can chime in on this.
-
I replaced the stock Aluminum tank in my 1975 19-6 with an off-the-shelf poly. I really like the new system, and it saved the time and trouble of working with a fabricator. But there were a couple of compromises:
- I went all the way down from 40+ gallons to 25 gallons to find one that fits in the coffin. That's not a big problem for the way I use the boat. But it may be for you.
- The fill fitting location required a TIGHT bend in the fill line. So venting during fueling can be a problem. Gotta take it slow.
- The pickup location is at the very front of the tank. So if you're running near empty, and want to keep the bow up for a dry ride, then you may scare yourself when the motor sputters. Not that that has happened to me ... :)
I was able to re-use the stock aluminum straps in the coffin to secure the tank. I used rubber strips and shaped some spacers out of pressure-treated lumber to get everything snug, but not over-tightened. Good luck with our re-fit
-
Thank you!
-
kleary4
do you happen to have a link to the tank you got?