Hi Michael:
I've used the 'Kreem' coat in the past with (other motorcycle tanks) and had
good success - just follow the instructions, and DON'T overdo it with the
muriatic acid. I'd suggest shaking as much rust off the insides of the tank
by throwing a handful of sharp edged rocks/bolts and washers/what have you
in there first sit in front of the TV for a couple hours while doing the
shake, rattle and roll with it to loosen things up as much as is possible...
if it's heavily rusted, you don't want the muriatic acid eating through thin
metal. Don't use your stock gas cap to blank off that large hole - the gas
cap's 'pot metal' will simply disappear under assault from muriatic acid
(ask me how I know..). The 'Kreem' coat I've heard is good for about 10
years, if properly applied. I've never actually kept a treated motorcycle
for 10 years, so no first-hand experience with longevity.
I've just did my '82 gas tank using the competitor product - 'Por-15' .. it
doesn't coat the tank, but rather converts the rusted metal. This product
still requires the tank surface to be surface etched though, so same sort of
process as 'Kreem' coating it.
Good luck
William Strong
From: Honda-C70@yahoogroups.com [mailto:Honda-C70@yahoogroups.com] On Behalf
Of portlandmichaeld
Sent: May 9, 2011 8:59 PM
To: Honda-C70@yahoogroups.com
Subject: [Honda-C70] Rusted Fuel Tank 1981 C70
I just purchased a yellow C70 from a couple who stored it under a tarp for
16 years. I've been working on it but have yet to figure out what to do
about the heavily rusted gas tank. I would prefer to buy a new or used one
that is clean but it's looking like I will have to clean it out. I just
bought Kreem and was wondering if anyone has used it. I was planning on
having it sandblasted before using the Kreem. Does anyone have any advice on
cleaning the tank? I've already got new fuel lines and a gas cap and have
removed the tank (no holes). Thanks Mike
(I searched for a thread about this problem and may have somehow missed the
gas tank section?)
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1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs:
http://www.shlaes.com/Vehicles/Scooter.htm
http://www.velodrome.com/HondaC70/HondaC70.html
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