[Fot] Welding of a gearbox casing

[rkramer3 at austin.rr.com]

I have only seen one broken and it was an early TR3 case. In the hot rodding circles they use a plate at the back of the engine that extends all the way to the frame and provide a mid mount. On the TR6 and GT6 I could see making a new engine plate to provide this mid mount but on the wet liner engines there is no plate. I suppose one could engineer a thicker flywheel to take up the 1/4" plate thickness and do it.


Bob Kramer
rkramer3 at austin.rr.com

---- Van Mulders Marcel <van.mulders.marcel at telenet.be> wrote: 
> In 2 years, I had 4 broken gearbox casing : maybe one of these can be
> repaired : it has a crack where the bottom of the gear casing and the rear
> wall  are mating. Considering the weight of the engine and gearbox, the
> stresses at that point must be very high : the 4 cylinder TR's have 2
> mountings at the front of the engine and 1 mounting at the gearbox
> extension. A gearbox with overdrive has this rear mounting at the very end
> of this extension : the shearing force between casing and extension must be
> very high, one should think that the rear wall of the casing should be
> pulled out all the time in racing. Has someone tried welding a gearbox
> casing?
> Marcel
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