Anatomy of passenger fuel tank

Search "wurth" in this forum and you'll find the gas tank fiber coating thread.

 

Jim,

Take a look at the thread http://www.ferrarichat.com/forum/showthread.php?t=243582 by Tom Kearns "TKO". I think he found the right tank schutz.

Freeman

 

I've got 2-3 liters of extra Wurth beige undercoating if you need them.

 

Jim,

Finding a matching colour and texture for your fuel tank all in one place may be tricky but do not fret. The Wurth products are excellent and can be painted. I have found the best way to achive a correct finish is to find a gravel guard with the right texture and then paint over it with a paint of the correct colour. The finished product is quite perfect and extremely durable.

 

The Wurth beige underseal is the Original product used by the factory.
I tried to get it here in the UK but the minimum Wurth would ship was a whole case and this made cost prohibitive as i only needed one can!
I was then told that they had stoped manufacturing this colour due to lack of demand and to watch out for old stock as it goes off.
I now have a suspicion that they may have manufactured a new batch.
Scott is yours from a new batch?
It's too late for me however as my tanks are now silver.
P S the beige Wurth product changes colour with age and goes a dull gold colour eventually.
G P

 

Jim,
Please be aware that this wonderful rockguard product is water soluable and air cures once sprayed out. If it freezes only once while in the liquid form, it is ruined. Wurth would not supply me in Michigan during the winter months, so we would stock up on the various colors for the colder season.
Make sure you are getting fresh never frozen product. Older product can be identified by the plastic container that appears to be imploding on itself. Do not use it.
It also needs to be applied with a simple and inexpensive air siphon gun that screws onto the top of the can of product. You need this gun along with the product if you want the correct textured appearance when finished. It is possible to thin out the mix with water to achieve a smoother spray out pattern if desired. We did this when using the product as an exterior rock guard, and then finish painted with body color.
The Dino tanks were beige originally. The product turns gold from being in the environment of the Dino engine compartment. Tanks sprayed with " Body Schutz" that were in trunk compartments, like a Daytona for example, still can retain the original beige color for reference.
I'm glad you are striving for originality here and not just painting your tanks gold.
http://www.ferrarichat.com/forum/showthread.php?t=243582
The tanks shown in this thread are 100% correct in my opinion.
Best,
Jon

 

Shoot me an email, I have a photo of a tank out on the floor. Seems I can not longer post photo's

Dave

 

IIRC all of the top tank tubes are 'vents', of one sort or another....

I vote for pulling the tank and brazing them all in properly, but I noticed on my carb return line it is NOT a very long projecting tube the rubber line mates to, it was also 'slick' and not knurled like the more common treatment for a clamped fuel line attachment...

You hit a 'limit' on photo posting, unless you Subscribe.......

 

Hey, I just found this picture, blowing down the street....take a look....
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Thanks Tex

 

This tank appears to have been painted.

I would start by scraping the coating off with a razor blade type scraper, move to a steel brush in a drill/rotary tool, finish up with 36 grit by hand or DA sander.
You may need to heat with a propane torch or electric heat gun to soften the coating prior to initial scraping.
Any small scratches in the metal will be covered up with the thick coating.
Post some pics for us on this project if you can please Jim..

Water soluble. (I do know how to spell. lol)

 

I used aircraft stripper from the auto parts store. About $25 for a gallon can. Fiber coating came off easily with only a few stubborn spots. Use good gloves and a putty knife. I also used a scotch brite scrub pad. I would epoxy primer the tank before using the Wurth product.

 

Jim, i can't help you on the anatomy, the only internal structure I can remember is the large diameter pipe at the bottom and a dividing panel down the middle.

I drained my tanks and left them outside for several weeks before working on them. To get the "dried oatmeal" off, I used a combination of paint stripper and rather tentatively a hot air gun (paint stripper sort) and a scraper. Once the worst was off, i used more paint stripper and scotch pads. Finally a good rubbing down with panel wipe.

I noted several corroded pin points (corrosion from outside, inside was perfect). Used a verneir and some pins to determin how deep they were compared to metal thickness, and was happy to re-use. Eventually I will replace when I can find a supplier of the original form.

I tried different paint materials on test pannels to re-create the original finish. Schutz with very short spray nozel (like a sawn off shot gun), allowed to dry for at least two weeks, then followed by gold spray paint looked good. I did both tanks, put them in and ran the car for a few months. However, the Schutz had carried on shrinking and cracked the gold. I kind of expected it. It only craked in a few places, but i could not live with it, so took them out and restripped them again. Second time I used gravi-gaud to re-coat them (the sort of stone chip paint that is used on sills in paint shops). Again, set the gun to splatter. They have been pefect for a year and half to date. Very pleased with the finish.

The paint material Scott points to looks like may be more suitable. You also raise a good question about the potential insulation protection that the original material may have been for. You refer to it as "dried oatmeal" which is a good description. Without doing a propper sample test, this stuff is very similar to that sprayed on the under side of the metal wings and ontop of the fibre glass inner wing covers. Looks like it was a universal covering during manufacture.

Kevin
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I hate to be overly "anal", but why do you own a colonoscope? Best regards and a very Happy New Year! Alberto

 

I had one repaired a while back. After seeing what was inside, probably only needed to cut a section on the side next to where the tube goes down to the bottom of the tank. Not on the top.
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My tanks were covered in fiberglass, but were leaking. Removed the fiberglass wondering if it had been a patch job, but evidently "L" series have that and not the Wurth coating. Anybody else? Regards, Alberto