…….. Of all of the awesome features of the GMC, one shortcoming with the advent of alcohol and water (ethanol) are today the 2 25 gallon steel fuel tanks. Ethanol causes rust to form in the tanks than your filters clog from the rust, especially the 5 micron cartridge filter at the front of the carb. WIX 330-48, carry several if you are running a carb still keep several of those filters plus a 1″ and a 5/8line wrench to change the filter out. Carry those with you all the time.
So if you get tired of replacing filters or your steel tanks rust thru, here are the 2 options we offer.
First is the single 53 gallon aluminum tanks you’ve no doubt heard much about. This tank has been thru field testing and has been improved to now be a real option both on price and on something to do away with rust which btw will only get worse as our fuel formulations are modified.
So let me show you our designhere are 2 tanks waiting to go in. A 4 1/2″ deep tank already has problems and care has to be taken on such large, shallow tanks for sloshing as you driveprogressive relieved baffles inside guard against that. There is a low area sump created to the rear of the tank to pull fuel from the lowest point plus there is a progressive relief cage around this sump to further check sloshing.
The raised areas on each side of the tank on opposing corners assures there is venting no matter what position the coach is in. For fuel injection, we drop the fuel return directly into the feed sump and cageThe fuel inlet port is not at the 1/4 level on the side of the tank as the originals, the inlet and vent are as hi up even built up above the tank a bit to help in fueling the tank.
This design is due to and thanks to the many of you out there who helped with the field testing. Cost is $1200 and of course shipping by truck isn’t cheap. We prefer to install these tanks here.
Now there is another “supertank” designed to go under the dedicated bed in a GM floorplan coach.In house for sure, we seal off to the interior from everything under the bed, you can see this is a tall tank, contoured to match the sweepup of the rear floor with again a sump cut thru the floor to have the feed port at the lowest point.
We have several of these systems on the road with really good results. Sooner or later the 2 steel tanks in your coach will have to be addressed, with the future too being fuel injected, those systems really don’t work well with our original 2 tank system. Fi systems want to pull out AND return fuel to the same tank cavity. This not only prepares you for the future of fuels but filling is not the slow trickle you have accepted as just the way it is. No it’s not! You don’t have to accept all that stuff having to do with those 2 steel tanks!
These field engineered designs now work well, fuel senders to your gauge on the underfloor tank is still sketchy because the tank is still only 4 1/2″ deep…..so the needle still swings. What can I say, physics can’t be changed.
So I hope this clears up any confusion on these tank designs and our commitment to make the GMC Motorhome even …..more better!
Thanks for your support ….. So as soon as we can get out and drive again, plan a trip to Florida and arrange to have one of these tank designs installed. You’ll be doing it sooner or later.
See ya tomorrow……