Crancase Lug Weld Repair

[Otley ScotterParticipant]

Thanks Eddie & Scotty H for your helpful replies.

The repair in question is to a front lug on a late engine fitted to a frame where the rails have been removed for racing…

In the intervening period we have managed to find a welder of pedigree to effect a repair, but Scotty’s offer to take a look is very much appreciated

Thanks again

[Eddie ShermerParticipant]

Please also be aware that once welded inevitable distortion will have compromised the alignment of the cups.
In particular the gland faces may become out of square making operation ineffective.

[ScottyHParticipant]

Hi,
Ive successfully welded two crankcases myself using TIG welding process, but i must warn that its not without risk due to:

1) The aluminium quality can be variable,
2) Porosity in the aluminium, and
3)Contamination with oil,

Each of the above factors makes the task challenging and i think that you’ll struggle to find a welder who will accept the associated risks due to the potential destruction of the crankcase, that was what i found and is why i tooled up to do it myself.

If you would like me to have a look at yours send me some photos and i’ll take a look and advise,

Feel free to PM me or post your email address.

Regards

[Otley ScotterParticipant]

Can anyone recommend a top class aluminium welder who might repair the front lugs on late Scott cases please?

[Author]

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