Vintage Dirt Bike Q & A

Ok all you really smart Honda people here's one for you. I found a really nice complete 83 cr250, but it has corroded in the water pump area. One of the nipples that the hose connects to has broken off. Now can I weld something on as a new connection or what about threading it and putting a stainless nipple as a new connection. Are these magnesium? Can magnesium be welded? Can you still get an impeller? Thanks Chris

The casting is aluminum and can be welded (just like magmesium) with a TIG. Ideally, it would be best to reweld the piece
that broke off. If you don't have that, you will have to fabricate something from aluminum that can be welded on. Once
done, dress the outside and inside with a grinder especially areas where coolant flows, pressure check for leaks, paint
and install.

The impeller is still available from: http://www.bikebandit.com or http://www.cmsnl.com and possibly from http://www.westernhillshondayamaha.com

Good luck.

dogger

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1973 CR250M
1979 CR250R
1993 CR250R
2008 CR500R
2009 CR250R

Thanks for the reply. I do still have the piece, just lots of corrosion. Guess i will get to work on this. Chris

Can magnesium be welded? Can you still get an impeller? Thanks Chris[/quote]
magnesium cant be welded by conventional means.the metal itself will burn.

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(2) 1968 DT1 1970 RT1M,1970 DT1C 1971 RT1B Enduro 1974 MT250 1974 DT250A (2) 1975 DT400B 1974 DT100,1978 DT175
1975 CR250M1 1979 CR250R 1979 Kawasaki KZ400H1 Jesus is Lord!!