1memphisdog Posted July 29, 2009 Share Posted July 29, 2009 I just purchased a '72 R75. The bike is in very nice shape, only 25,00 miles, and has been mechanicaly well taken care of but I would like to see it shine a bit more. Any thoughts about engine cleaners? Anyone heard of soda blasting the engine? Is it safe? Link to comment
moshe_levy Posted July 30, 2009 Share Posted July 30, 2009 Simple Green & a nylon brush. Apply, rinse, repeat. Over and over, lots of elbow grease. Then Mother's Aluminum Mag polish. Apply, repeat. Lots of elbow grease again! If you're going to take the engine apart, soda blasting is pretty safe. Here's mine after soda blast followed by acid wash for my upcoming R75/5 cafe build http://www.mklsportster.com/r754-09.htm -MKL Link to comment
Wooster Posted July 31, 2009 Share Posted July 31, 2009 You may know this already but, be very careful of the rubber pushrod tube seals (very careful as in don't touch, wipe or hose down) as they only get worse, that is, more oil weeping. Wooster who had four airheads Link to comment
Penforhire Posted September 28, 2009 Share Posted September 28, 2009 I used glass bead blasting in my restoration. Yes, I had to tape up all the openings (and stuff like pushrod seals were already removed) and still decided to rinse the interior to be sure no beads remained. I tried all sorts of nasty potions and brushes first (working up from Simple Green and Mothers Mag polish into real nasties like EagleOne Mag cleaner with serious acids) but none of them had enough effect on my corrosion. The alloy is not enough like pure aluminum. Glass beads kept the original metal texture just fine. Link to comment
SteveHebert Posted November 8, 2009 Share Posted November 8, 2009 My friends father does lots of restorations and uses mineral spirits and steel wool. The cases are beautiful! Of course bead blasting is really nice. Link to comment
bikebits Posted December 5, 2009 Share Posted December 5, 2009 Scotch Brite pads and Autosol. After a several years year it oxidizes down to this: Link to comment
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