Quote:
Originally Posted by CTWV50
Sump looks very strong/structural don't you think?
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I think you are correct in saying that it 'was' structural as you need to remember how the back of the gearbox was tied to the nose of the diff, if there was only four bolts around the top of the gearbox the diff could have snapped the bell housing under load.
How ever in the Roadster you support the back of the gearbox on it's own rubber mount in the tunnel, it does not have the diff acting on it you could in theory get rid of the bottom section.
There is a 200sx in the unit next to me making near 280hp and that has only ever had four bolts holding it together and that is used for drifting. I personally would spend the £25-60 that the steel item costs on paying some one to TIG the cast ali item once I'd worked out the sump oil pickup.