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I'm just finshing sorting a rusty 91. Best trick i found was that i'd bought a cheap set of toothbrush wirebrushes last week from ebay...steel and brass and nylon (under £2 posted for the lot). the brass ones soft enough to use on the heavy varnish without scrtaching the alloy and the nylon is easy for anywhere.
For really rinsing stuff off I like to use a decent depth of spirit in a tub. It's not so cheap nowadays so mean folk like me discovered you can filter it through some kitchen paper to get all the dirty bits out of the spirit and store back in a spare 'used' spirit bottle for final rinses or next time.
Everyone has their own way of doing bearing changes. But for me the easiest is to put the back bearing back on the crank before shoving the combo into the freezer. I have my oven temp up high..it's an oil-fired rayburn anyway with limited control - so it was up to 'roast' temps before the engine got chucked in. The old bearing just fell out and the new slid in like silk.
I'm swapping most of the screws for s/s on that engine. Scrubbing the rust off capheads is joyless and one's only gonna be landing in wet grass again.
While at that bit then it's time to take the carb apart.. well the main needle seats anywa.. and flush some carb cleaner through that thoroughly then when the needle seats are back i use a length of fuel tube and a 20ml syring to force flush some spirit through too to wash out any carb cleaner before final re-assembly. I'm not sure but i'd guess the carb cleaner might try to eat any O rings.. it's pretty solventy stuff.
For really rinsing stuff off I like to use a decent depth of spirit in a tub. It's not so cheap nowadays so mean folk like me discovered you can filter it through some kitchen paper to get all the dirty bits out of the spirit and store back in a spare 'used' spirit bottle for final rinses or next time.
Everyone has their own way of doing bearing changes. But for me the easiest is to put the back bearing back on the crank before shoving the combo into the freezer. I have my oven temp up high..it's an oil-fired rayburn anyway with limited control - so it was up to 'roast' temps before the engine got chucked in. The old bearing just fell out and the new slid in like silk.
I'm swapping most of the screws for s/s on that engine. Scrubbing the rust off capheads is joyless and one's only gonna be landing in wet grass again.
While at that bit then it's time to take the carb apart.. well the main needle seats anywa.. and flush some carb cleaner through that thoroughly then when the needle seats are back i use a length of fuel tube and a 20ml syring to force flush some spirit through too to wash out any carb cleaner before final re-assembly. I'm not sure but i'd guess the carb cleaner might try to eat any O rings.. it's pretty solventy stuff.