BMW K bikes (Bricks)

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@kustom_moto

@kustom_moto
Silver member
Silver member
Guys, I have just had a fantastic new paint job done on the tank but came into the garage this morning and it's leaking, I have the tank off now and have tracked this hole down. 

Pinhole in tank, can it be repaired? HELP! 20181110

Now question is, is there anything I can use to plug this? Was thinking possibly JB Weld? Is there anything else? Last resort is have it welded shut and also use a tank sealer. Then it will need respraying too :-( nightmare!


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1988 K100 LT
1984 K100 RS

Instagram K100 Build follow me at: @kustom_moto
    

Dai

Dai
Life time member
Life time member
https://www.ebay.co.uk/itm/VersaChem-HEAVY-DUTY-Fuel-Tank-Repair-Kit-Petrol-Diesel-Leak-Fix-Seal-n-Place-/263901820022?hash=item3d71c63476

https://www.ebay.co.uk/itm/Heavy-Duty-Fuel-Tank-Repair-Kit-Petrol-Diesel-Leak-Fix-/323456504503?hash=item4b4f8292b7

I've patched LFB's tank twice now with the top stuff, once because of corrosion and once because of damage at the front of the tank after the PO was t-boned.

Oh - and check the other side of the tank in the same place.


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

Woodie

Woodie
Life time member
Life time member
I've made the same type of repair as Dai on my tank.  I didn't purchase a specialised product because I had polyester resin on hand.  No issues with the repair so far.


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Pinhole in tank, can it be repaired? HELP! Logo2111
1985 K100RT  52667
1990 K75RT 6018570 (project)

"Keep your stick on the ice.  We're all in this together."  Red Green
    

@kustom_moto

@kustom_moto
Silver member
Silver member
That's great guys, thank you. Since I posted I have now lost confidence in the tank, I suspect there could well be other small holes so have emptied the gas and will have it welded, if I cant weld then will use this stuff and also line the tank and have it resprayed. 

Can anyone recommend a decent lining kit?


__________________________________________________
1988 K100 LT
1984 K100 RS

Instagram K100 Build follow me at: @kustom_moto
    

yamaguzzi

yamaguzzi
Life time member
Life time member
Caswell epoxy gas tank sealer is what I use for this kind of problem.You need to be careful if you live in the US where they contaminate all our fuel with ethanol .That crap can eat thru a lot of products but this will stand up to it
https://www.caswellplating.com/epoxy-gas-tank-sealer.html


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1988 K 100RS ,1975 Moto Guzzi 850-T , 1971 BMW R60/5 , 1971 Yamaha R5B,1969 Yamaha DS6C ,1966 Yamaha YM1 , 1965 Yamaha YDS3
https://motoguzzi850t.blogspot.com/
    

indian036

indian036
Life time member
Life time member
@Woodie wrote:I've made the same type of repair as Dai on my tank.  I didn't purchase a specialised product because I had polyester resin on hand.  No issues with the repair so far.
I also used a polyester resin with glass fibre on a steel boat fuel tank 25+ years ago. (Multiple pin holes on the flat bottom.) My son still has the boat and it is still sound. Maybe 15 years ago, similar on a steel small Yamaha bike tank.

Only caution: ethanol fuel will likely affect it, so another good reason not to use E10 or similar.

Bill


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1985 K100RT  VIN 0028991  My original Very Happy   (Historic rego)
1985 K100RT  VIN 0029036  BOB the Blue Old Bike  (Historic rego)
1990 K100LT  VIN 0190452  Work in progress
1984 K100RT  VIN 0023022  Work needing lots of progress

1986 K100RT  VIN 0090542  Work needing lots and lots of progress
1993 K1100LT  VIN 0183046  Work in progress
1993 K75S  VIN 0213045  Newest toy, slightly non-original
    

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