The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: NOT2SMART on April 22, 2007, 07:02:54 AM

Title: POR15/FUEL TANK
Post by: NOT2SMART on April 22, 2007, 07:02:54 AM

I used POR15 to seal the rust on my R65 fuel tank but neglected to blow air through the petcock hole. Now the hole to the petcock is blocked. Any ideas to get the hole open?
Thanks,
NOT2SMART

Title: Re: POR15/FUEL TANK
Post by: thrang on April 22, 2007, 10:40:50 AM

I guess you could try a small hand drill to open the holed and then a ream, if you can find one in the right diameter? Don't know if it would work but its how I would go about it.
tony

Title: Re: POR15/FUEL TANK
Post by: NOT2SMART on April 22, 2007, 12:58:54 PM

I not sure where the fuel exits inside the tank. There is a steel tube that reaches almost half way up into the tank. If the hole was at the top of the tube you would run out fuel on half a tank. It would make more sense that there was a hole near the bottom of the tube.


Mike

Title: Re: POR15/FUEL TANK
Post by: thrang on April 22, 2007, 06:36:44 PM

I am assuming that POR15 is similar to the PetSeal treatment I lined the Bimbo's tank with when it started to get knackered. Although I removed the tap and plugged the hole before I sealed the tank I had to clean the fitting before it would allow a clean refit of the tap.

Since the threaded fitting for the fuel tap is on the exterior of the tank you should not have got any sealant on the threds.  If you've got the tank seal in the fuel tap then it will be buggered so its no great shakes if you have to saw off the tap and drill it out as they are not that expensive.

By removing the fuel tap the attached twin feeds (for main and reserve) should come out with it.  You should then be able to clean the fitting hole up with a ream, or small round file. A careful rinsing of the tank should remove any sealant swarf and bits of tap. Fingers crossed a new tap should go straight in.

Note make sure you rinse the tank out throughly and LEAVE LONG ENOUGH TO REMOVE ANY FLAMMABLE VAPOURS before you attack it with a hacksaw or drill.
Tony.

Title: Re: POR15/FUEL TANK
Post by: NOT2SMART on April 22, 2007, 07:24:23 PM

Problem Resolved, what I though was a steel tube on the inside of the tank was merely a screen mesh tube cloged with sealant . I just poked 2 holes on the inside at  the base where the fuel valve is threaded on.

Thanks for the replys Tony!

Mike

Title: Re: POR15/FUEL TANK
Post by: Jon_P on April 22, 2007, 08:29:35 PM

i love the por15 tank sealer. i have used a small hobby razor to open to places that shouldnt be sealed.

Title: Re: POR15/FUEL TANK
Post by: trolle on April 25, 2007, 03:42:10 AM

Mike, for your own sake I hope that you have a gasoline filter between the tank and the carb, if not chances are that grit from the tank will end up in the small ducts of the carburettors.

Another problem is whether the two small holes in the strainer will allow an ample flow of gasoline to the carburettors at high speed.

A new strainer only costs $4.5.

greetings from a warm and cloudy north - very good riding conditions

trolle