TRX250R.ORG
Workshop => Engine and Bottom End => Topic started by: ballz338 on November 04, 2013, 12:59:15 PM
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Do any of you guys have recommendations for what filler material to use on OEM 250R engine crankcase repair? I am TIG welding up a crack around the shift shaft seal area.
So far i have experimented with 5356 filler rod on a junk case. I didn't see any issues with this material but wanted to see if anyone here has experience with this. I will also have to machine this after the welding is done. If I remember correctly 5,000 series aluminum is not the best for machinability.
Any input is appreciated.
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Do any of you guys have recommendations for what filler material to use on OEM 250R engine crankcase repair? I am TIG welding up a crack around the shift shaft seal area.
So far i have experimented with 5356 filler rod on a junk case. I didn't see any issues with this material but wanted to see if anyone here has experience with this. I will also have to machine this after the welding is done. If I remember correctly 5,000 series aluminum is not the best for machinability.
Any input is appreciated.
I would use 4043 on any area that requires strength on a die cast case. The 4043 is a little more flexible and not as brittle. 4043 typically does not machine as well.
If I am welding up a gasket surface I will use 5356 because it is leaves a harder surface and better surface finish.
Get all surfaces clean and a bright finish left by a carbide burr. Do not try to weld an aluminum surface that has been cleaned by sand-blasting or sanding!!!
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Seems like 4043 is just ol faithful in aluminum welding, it's pretty much all I've used, tig or mig.
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Thank you both!
I am going to go with the 4043.