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Sounds like I can get by without protecting the mating surfaces with vapor honing. Can threads get damaged?I havenít had the crank measured yet. Fingers crossed I can get away with just fresh bearings.A fresh oil pump is in the budget.
Vapour honing will not damage threads but blind holes can be hard to clear of media, when I can, I thread in an old bolt into the threaded hole before I vapour hone. Regardless of plugging holes or not, I chase out all threaded holes before reassembly. Vapour honing with fine glass bead is very safe, the bead does not fracture on impact like dry blast so no tiny shards of glass bead get embedded in the porous surface of the casting. I pull all ball bearings and races out of all castings before blasting, near impossible to get the media out of a bearing. After honing I rinse and with compressed air blow dry the part then rinse and dry again. After you finish assembling the engine spray it down with brake cleaner followed with a spray and wipe of ACF-50. Vapour honing only pulls off oxidation, it does not damage the base metal.
Cleaning very thoroughly is super important no matter the method or media. The last Morini 3 1/2 engine build I did for a customer had been vapor blasted by him and media was packed in bolt holes and crevices like concrete. Very hard to remove - for M6 bolt holes I ended up using a .22 caliber rifle cleaning brush! Not all dry blasting machines are created equal. The machine shop that cleans my cases has a shot peening machine made by Blast-It-All which they run at 15 psi. The blast media (Potters Ballotini) does not fracture at such low pressure so there is zero chance of any of it being embedded. They plug all bolt holes and oil galleries, mask most gasket surfaces and clean the part three times. https://blast-it-all.com/abc-shot-peener/?v=2e5df5aa3470https://www.milessupply.com/product/ballotini-glass-bead-abrasive/
One of my mechanically weak points is gears and transmissions. Iím scared to death of bevel gears! Itís a totally dark art to me.Before I start reassembling the trans on this bike Iíd like opinions on condition. Iím going to replace any dogs available and bearings. Sorry my photos arenít great.Thoughts?
Thanks John, another great pointÖ I kept wavering between doing a LH or RH shift on this bike and was about to settle on RHÖ Oy! This might push me back to a LH conversion.This project is fighting me a bit!
Price on the 5 dog guts seems good...Charlie, if Bill's shift drum is the old V7 Sport, 1 up 4 down, it can be re-used right?
Iíve got a question about the console color. What color is a good match for the gauge surround and idiot light holder?
Wrinkle black. I had my powder coater do it.
Is that what the Sports were originally?
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