Gearbox recommissioning

[jonat127]

I have a 901 gearbox from my 914 which has been standing for 25+ years.
I can select the gears and the input shaft & output drive shafts seems to rotate ok.
I am getting to the stage in my 914 restoration where I will be ready to install the engine and box.
I was wondering if there is anything I could do to prep the box?
I will obviously be changing the oil but could I/should I try to flush it with anything?
I don't really want to strip the whole thing down as previous owner assured me it was ok when car was taken off the road. He had built a new engine and done rust repairs then stalled in his build but said the box was good and was just going back in. But that was a long time ago and it has just stood in the corner ever since.
Advice appreciated.
Thanks
Jon

[911hillclimber]

Not very positive, but I've seen engines red with rust inside when stood still for a long time.
The gears could be rusty as any oil film would have drained over that time unless the box had been tuned to cover everything in oil.

Maybe a call to Mike at Bainbridge Engineering?

[jonat127]

Good points that i hadn't thought of. Perhaps I will take the end off and take a look.