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Welding cast aluminum, How much warping?

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bondo	Nov 7 2005, 03:40 PM Post #1
Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California	People weld cast heads all the time.. could I get away with welding large portions of a transmission case? (902) I have a wacky idea that just might work...

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bondo

Nov 7 2005, 04:58 PM

Post #2

Practicing my perpendicular parking

Group: Members
Posts: 4,277
Joined: 19-April 03
From: Los Osos, CA
Member No.: 587
Region Association: Central California

QUOTE (Brett W @ Nov 7 2005, 03:49 PM)

Why not just use the Audi gearbox?

As far as welding cast aluminum, yes you could weld that and probably not have any problems. I would use a 4043 rod and preheat the tranny to at least 350. You should clean it really well and do not run a continous bead. Weld a little then roatate the piece, weld some more, then put it back in the oven to even out the heat. This will take a very long time to do, then you will have to have a way to machine it parallel with the other side cover. If not you will creat all kinds of issues.

You will still suffer from the problems that plague the tranny in High HP applications. The pinion doesn't have enough support for high torque loads and the ring gear is too small.

Cool, thanks. I shouldn't have to do much if any machining, as there will be plenty of material holding the diff bearing area in place after the offending bits have been removed.

I think the only way to know for sure if it will work is to try it..

Posts in this topic

bondo Welding cast aluminum Nov 7 2005, 03:40 PM

Aaron Cox you can weld up engine cases....so i cant see why ... Nov 7 2005, 03:43 PM

bondo ... Nov 7 2005, 04:02 PM

Aaron Cox i wanted to build a 914 trans using an AL case too... Nov 7 2005, 04:23 PM

bondo ... Nov 7 2005, 04:42 PM

Aaron Cox bolt pattern - i mean the sideshifter nosecone won... Nov 7 2005, 04:43 PM

Brett W Why not just use the Audi gearbox? As far as weld... Nov 7 2005, 04:49 PM

bondo ... Nov 7 2005, 04:55 PM

bondo Nov 7 2005, 04:58 PM

kwales Iffin there is any heat treat on that tranny it... Nov 7 2005, 05:15 PM

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