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jack grebe
04-23-2009, 09:27 PM
I am in the process of "saving" an old
1980 Yamaha and I need to clean the fuel
tank and seal it......Any recommendations
on how to do this quick and easy?


When I look down in the tank, I can see clean metal
and metal that is beginning to stain rust, but no heavy
rusting or pitting....THAT I CAN SEE.

I just spent more than a sane person would have
on a set of reconditioned carbs and I certainly don't want to
have to again.

Also, just to be on the safe side, I am putting an inline
filter between the fuel petcock and the carb.

seafox
04-23-2009, 09:38 PM
good luck on the restoration

jack grebe
04-23-2009, 10:08 PM
There is a product called "Red Kote" I have used it
many times and it works.

http://www.4secondsflat.com/Fuel_Tank_Sealer.html
Good link, I kinda have doubts about the length of time though

25 Yrs?????

PeterSibley
04-23-2009, 11:07 PM
If you want to get the rust out first ....then seal it , fill it up with a mix of 30% molasses and water and leave aside for 3 weeks .It will completely remove ALL the rust .It will look like it's been shot blasted ......something that's hard to do to the inside of a tank .:D

ian scott
04-24-2009, 06:23 AM
great idea peter.

i have recently used a POR15 system. three stages.

http://www.por15.com/

works fine if you follow the instructions. has stopped the grit that was going through the carbs on my moto morini.

BIGOINK
04-24-2009, 09:24 AM
This forum is for sane people ........an 80s yam ????

Canoeyawl
04-24-2009, 10:27 AM
This forum is for sane people
You must be new here...

P.I. Stazzer-Newt
04-24-2009, 10:38 AM
You must be new here...

He probably missed the warning.

May contain nuts

Some 80s yams are very fine things indeed - the Elsie and the RD500 stand out but there was an interesting 1000cc in-line V twin with a monoshock and enclosed chain - sort of Hamamatsu does Vin.

It was the TR1.
http://4.bp.blogspot.com/_qpWtg6IvDLk/R1AmXaJsc4I/AAAAAAAAAx0/PGMl9co2GyU/s1600-R/Yamaha+TR1+RESZ.jpg

mmd
04-24-2009, 11:28 AM
Then there was the XS1100 Special:

http://www.motorcyclespecs.co.za/Gallery%20%20A/Yamaha%20XS1100SE%2079.jpg

Before you deride it too much, it is still running (well, sort of - I need to replace the cam chain guide and starter engaging spring) with no - and I mean NO - mechanical failures in thirty years - twenty of which it has been in my possession. No rebuilds, no broken parts, nuthin'. Just like a Timex...

jonboy
04-24-2009, 11:36 AM
put a kilo or so of any clean small nuts, (not pistachios) ball bearings roller bearings random sized etc and shake about for as long as you can be bothered. don't put any liquids in. tip them out and there will be lots of fine dust. ..Blow through with compressed air, or no compressor then vacuum cleaner and generally thump the tank about....proprietary brand sealers available from at least any classic car/bike suppliers or perhaps even the local motor factors all work well, Most say you don't need to remove rust first but I would.

jonboy
04-24-2009, 11:39 AM
Forgot to say I used this procedure on a LEAKY BSA tank, not just rusty but perforated... ten years later or so, its still ok

Ted Hoppe
04-24-2009, 11:39 AM
Red Kote works ok. Use inline paper filters that should be changed once a year or every 8,000 miles what ever comes first. I would suggest that no fuel additives or stabilizers be applied to that tank. Oh yeah - don't even think about using those existing fuel lines especially if ethanol could/may have been run.

jack grebe
04-24-2009, 08:20 PM
Then there was the XS1100 Special:

http://www.motorcyclespecs.co.za/Gallery%20%20A/Yamaha%20XS1100SE%2079.jpg

Before you deride it too much, it is still running (well, sort of - I need to replace the cam chain guide and starter engaging spring) with no - and I mean NO - mechanical failures in thirty years - twenty of which it has been in my possession. No rebuilds, no broken parts, nuthin'. Just like a Timex...
You don't know how close you are...........
I have an "80" XS 400, same bike, better fuel economy.

jack grebe
04-25-2009, 06:46 AM
Well, I know of one Model A that we did in the early
80's and it is still going. In fact, it is getting a new
top insert and most of the interior right now. But
the gas tank is still holding.
That's good to hear, I will put it on the list of possibilities
The Dealer had some kind of coating they were
trying to hawk, but the would have to be done every
2 yrs.......

P.I. Stazzer-Newt
04-25-2009, 07:32 AM
...
I have an "80" XS 400, same bike, better fuel economy.

I put 50K on a '79 XS400.

Nice sweet handling bike with only a single bad habit - the damned vacuum operated fuel tap - every once in a while it would spit back through the carbs on start-up, this would dislodge the vacuum line from the port-side inlet - and about a mile down the road the engine would stutter and die.

Mine was stock except for the Cibie Z-beam.

mobjack68
04-25-2009, 09:50 PM
seriously consider a new tank??

jack grebe
04-25-2009, 10:00 PM
seriously consider a new tank??
I'd love a new tank..........got one for a 29 year old XS?