Need a new gas tank thanks to rust

[Duc Hunter]

So I need a new tank in my project car. The old one is full of rust. I was perusing our host and see there is a Dansk tank in the $350 range....and another that says it is galvanized at $420 range. The Dansk is better rated, but galvanized seems like a much better way to go? Anyone here have any suggestions?

PS - I would love a 100 liter tank......this is going in a RS 3.0/IROC replica (on the outside) I am building...and my dad's old Super 90 had a bigger endurance racing tank that Lake Underwood put in it before my dad bought it (back in the day). Just not sure I want to spend that much more coin.

[Flat6pac]

Take the old tank to a radiator shop and have it cooked out and then coated inside.
Bruce

[patz]

^^^^this!

[Avanti]

There will be more than one comment including mine to not coat the tank. When not done right hey peel and can cause problems. I put the Dansk in my 77 and am happy with it.

[sc_rufctr]

IF you can find one. The plastic RS tank is a good option. Install and forget.
The only problem is the price.

At $355.25 (from our host) the Dansk one is hard to overlook and it's got some good reviews.

[SCadaddle]

Originally Posted by Avanti

There will be more than one comment including mine to not coat the tank. When not done right hey peel and can cause problems. I put the Dansk in my 77 and am happy with it.

I know a guy (don't we all?) that has restored many fuel tanks and many of them being 911 tanks. According to him, the only way you are going to restore a fuel tank with rust inside is to cut the tank in half, sandblast thoroughly, weld it back together, pressure test and then add a coating such as RedKote. This is what we did with my 69 912 tank. Now, the rub with the CIS tanks is the plastic swirl pot inside the tank. For these he fabricates a new metal swirl pot as the coating is not going to stick to the plastic. Unfortunately, the cost for him to do one of these tanks is more than what the repo tanks cost. But once they are done they are done right.

[Duc Hunter]

So I still am curious....is the galvanized tank worth it? Has worse ratings than the un-galvanized tank from Dansk.

[Spumato]

You really should listen to Bruce. Drain, pull tank, and take to a radiator shop to be cleaned and sealed. This is the cheapest and best route to take. Also, if you have rust in your tank, has it migrated down stream? Those little particles are nasty on the system and will clog orifices faster than you can say Shazam!

[Duc Hunter]

I appreciate the suggestions to take the tank to a radiator shop. I do not want to do that. In miming the tank is too far gone. The rust is sop substantial there were chunks of it in the fuel filter, and I replace 2 fuel injectors that has crap in them that at some point (PO's time with the car) killed the injectors. When we too the injectors out there was material in them. So I have no confidence in restoring it. A new tank IS going in.

I heard today that a tanks, like the Dansk, are galvanized. Does anyone know if that is true? Seems strange Pelican's description would not say that for the Dansk, but list that specifically for the non-Dank one.

[Luccia at Pelican Parts]

I believe it has to do with different coatings. Dansk is aluminized steel, which is a steel that is coated with aluminium-silicon alloy. Galvanized steel is steel that is coated in zinc.

1989 Porsche 911 Carrera - Fuel Tank

[jlex]

Originally Posted by SCadaddle

I know a guy (don't we all?) that has restored many fuel tanks and many of them being 911 tanks. According to him, the only way you are going to restore a fuel tank with rust inside is to cut the tank in half, sandblast thoroughly, weld it back together, pressure test and then add a coating such as RedKote. This is what we did with my 69 912 tank. Now, the rub with the CIS tanks is the plastic swirl pot inside the tank. For these he fabricates a new metal swirl pot as the coating is not going to stick to the plastic. Unfortunately, the cost for him to do one of these tanks is more than what the repo tanks cost. But once they are done they are done right.

Exactly my experience last year. The quote was $500, so I went with the Dansk tank. Perfect fit unlike bad reviews given on the galvanized tank. I'd do it again as I was impressed with their quality control and packing. Hay, I feel like I got $100 worth of bubble wrap in the deal

[RichardNew]

I had my tank coated about twenty years ago. When E10 was introduced it ate the coating away. That was a major issue. I was changing fuel filters on a weekly basis.

I will never coat another tank. It could be that the newer coatings will stand up to E10. I'm just not willing to take the chance.

Richard Newton
Gasoline Issues