The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Lucky_Lou on June 04, 2009, 04:19:28 PM

Title: Tank repair
Post by: Lucky_Lou on June 04, 2009, 04:19:28 PM
Further to my debris problem im considering useing something like this
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=370205197360
Has anyone used anything like it ....does it work??
ta Lou
Title: Re: Tank repair
Post by: beemer on June 05, 2009, 05:53:28 AM
Sounds a good idea,have you called them for more info?have you a leak or rust flaking?i haven't had that with my bike luckily,but it's good to hear about these type of problems,would you remove your fuel tap before using it?otherwise you may not get it off again!!!good luck,J.
Title: Re: Tank repair
Post by: Bengt_Phorqs on June 05, 2009, 11:59:15 AM
Lou, I think I would ask them for a Material Safety Data Sheet to determine what the primary chemical composition is.  That might give you an idea of how effective it might be not to mention the toxicity of the product.  

Several of us have used a product called POR 15 for internal sealing and coating of fuel tanks.  It's a wee bit messy to use but manageable with care.  It is also a proven product.  Best of luck.
Title: Re: Tank repair
Post by: Lucky_Lou on June 07, 2009, 04:50:58 PM
The bike had been stood for at least 6 years before i got my hands on it i steam cleaned the gunge out and thought it was ok there are no leaks but i keep getting large flakes of rust blocking everything up.
Lou
Title: Re: Tank repair
Post by: Justin B. on June 07, 2009, 07:43:03 PM
Muriatic acid will dissolve all of the rust...
Title: Re: Tank repair
Post by: Crossrodes on June 07, 2009, 07:59:54 PM
But if you use muriatic acid be careful breathing around it.  I used to use it on my boat to clear the discharge lines from the head which would get plugged from the mixture of salt water and urine.   I believe I used a 50/50 mix of the acid and fresh water.  It was nasty stuff.  I would leave it sitting in the discharge lines (made from a rubber like material) for 15 minutes and then pump them out...worked like a charm.

Questions for Justin:  When using it to remove rust in the tank would you mix it with water or use it full strength and how long would you let it sit in the tank.

I have heard of others using something like small rocks which they put in the tank and then put the tank on a cement mixer (surrounded with lots of paper or something to keep the tank from flying around) and then turn the mixer on for awhile with frequent stops to see how it is doing.  Be careful though you don't want a whole bunch of dents in your tank.  Perhaps others that may have done this could chime in and give further advise.
Title: Re: Tank repair
Post by: Justin B. on June 07, 2009, 08:53:08 PM
I've heard of putting in a handful of drywall screws and tumbling it in the clothes dryer (well padded of course) and a bunch of other home remedies.  The Eastwood liner kit advised to put full strength into the tank and let it soak.  This tank was pretty rusty inside and it took about an 11 hour soak.  Afterwards the tank interior was a uniform grey color wherever I could see.  The kit included a metal wash to use after the "vatting", followed by acetone, then the liner.
Title: Re: Tank repair
Post by: Lucky_Lou on June 08, 2009, 02:56:47 PM
Having steam cleaned the tank again ive made and fitted a 15g filter inside the tank over the fuel and reserve inlet and a clear plastic inline filter to the carbs so i can see if any crap gets through....so far so good, ill hang fire on the tank lining for now
Lou