Penny-pinching car geek's guide to racing, track days, and car build. DIY projects, product reviews, and interviews.

Tuesday, October 14, 2014

Completely rusted out tank - Tank repair

This is a cheater post--no DYI projects here.  I bought my hawk for dirt cheap.  Dirt cheap for a hawk.  Most vintage bikes from the 80's will be worth about 1500 dollars in working, good condition.  My hawk was working, low mileage, but it had a completely rusted out tank.  I realized that when I picked at some bubbles on the paint with my fingernail; gas started pissing out.  Uh-oh.  Unfortunately it is super-hard to find an intact NT650 gas tank.

There are some options.  The most simple one is to get a tank off of a CBR600F2 or 600F3.  These
are widely available for cheap.  (Sub 100 on Ebay)  Put a modern Harley right side petcock, which is not vacuum operated--just like the Hawk-- and are universal.  By modern, I mean post 1975.  Put some spacers, extend the tabs, bolt on and widen your seat.  Done!  However, I won't be going that route. 

On an NT650, you have this tiny 3 gallon tank.  Which means you can go 150 miles on a trip.  That is another reason people install the F2/F3 tank; its bigger.

One great thing about this small tank is that it is super narrow.  This is the primary reason I will not be going with an F2/F3 tank.  Also, I love the looks of the stock tank.

I don't have any exterior photos of the tank, but here is what it looks like on the inside:
The horror!! The horror!!
What it is is an epic crap POR-15 coating.  So what will I do?

Fortunately I found these guys:  http://www.gas-tank.com/
They'll take the tank, sand-blast the outer surface to get all of the paint off.  Then they'll bake it to burn out the previous coating.  They'll cut a hole in the tank to sandblast the inside as well.  Any pinholes (which I have plenty of) in the tank that go through the tank walls will be filled in, any parts of the tank that need welding will be welded in.  The inside will be coated with a badass proprietary coating and the outside will get a few coats of primer.  Apparently the tank will never rust again. 

I am not bad at rattle can paint jobs.  I did side covers on my old '72 scrambler and it looked glorious.  I'm going to do the same to this tank.  I'm thinking about a crazy color like yellow or a light orange, but I have a feeling that darker colors contrast better with the aluminum frame.  I'll keep you guys posted. 

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