Are Harley fuel tanks lined to prevent rusting?

Thank you in advance.

BC7

 

IMO they are lined just to cause you grief when the lining starts to peel of and clog up your petcock screen when you are miles from home.LOL There is no need for lined gas tanks as long as they have been pressure tested and kept full of gas. If kept full with fresh gas they will not rust.

 

Yes, this is especially important for riders who use ethanol contaminated gas and leave their bikes for several weeks with partial tanks. Although some rare cases of separation may be reported, they are isolated cases. In older bikes, sometimes the liner gets brittle and a dent can begin separation. Once rust starts, it migrates very quickly.

Those of of us who restore bikes often use Por15 gas tank restoration kits.

Note: Ethanol is a contaminant added to gas as an oxygenator to line the pockets of congress and big agricultural corporations. It was the wrong oxygenator choice, but the corn lobby grows corn and aside from high fructose corn syrup, ethanol is easy and cheap to make. But the real reason is in order to get government subsidies.

 

I picked up a 1991 FLHTP from the NYPD police's auction. The fuel tank was lined, but after a few years after I had the bike, the lining began to peel.

 

That's what I hear , lined to prevent rusting , but see plugged up fuel filters and lines all the time . I've done 3 tanks and so far never put a sealer in them , just tell the owner to keep the tank full .

 

My 04 is still rust free. It has some type of treatment. It looks like a little yellow tint in there. Don't think that's raw sheet metal.

It's had ethanol fuel it's whole life. No additive. Nothing but gasoline. Time will tell. It's sorta now like Puff. (The magic dragon)

 

Mine is a 2002 fatboy. It has a grey lining in it and is not peeling at all (knock on wood) I try to use ethanol free gas when I can but sometimes it cant be found. I do use sea foam in the gas about every two to three tanks to keep the carb clean and the pistons free of carbon. If it starts to peel and rust I will cut a hole in the bottom of the tank, bead plaste the stuff off weld up the hole, pressure test and leave it bare metal and be sure to keep the tank full

 

Hey, don't knock my corn juice. E85 was worth 100hp more than clean 93 in my subaru!

 

Hope the original poster does not think we're stealing his thread. Least keeping it on top.

I work on stuff and see no problem with ethanol. I have rebuilt carbs out of power equipment that are 15 years old and see no harm and they have had ethonal were I use to live for decades.

But your the second person says E85 is great in performance cars. It should not be put in a Harley per Harley

But my granddaughters boyfriend runs it in his turbo Honda car. Said something like you just said. Alcohol has less BTU then gasoline.

How can it give more power. Since it's turbo, is he using it to cool and with turbo packing more air, getting that hp you clam?

Really not logical.

 

at a given volume it has less power. But it “gives more power” because of it being oxygenated, having a cooling evaporative effect which means more dense manifold air, and that allows you to add more fuel and timing... thus the increase in power. And why it works so well in high compression and boosted applications.

watch the Motortrend show enginemasters episode about E85 vs race fuel and gasoline. Tested and proven. You don’t make more power per gallon, just more over all power output from your engine.