how to clean R75 aluminum engine block
Posted: Thu Aug 22, 2013 5:19 pm
Motorcycle Classics Blogs wrote:
TECH CORNER
Technical Q and A for classic motorcycle maintenance and repair.
Clean Aluminum Engine Block on BMW R75
6/5/2013 11:36:50 AM
by Keith Fellenstein
Motorcycle Classics Project BMW referenced below.
Q: I have a 1977 BMW R75/7 and am trying to clean the aluminum engine block to bring it back to a newer looking condition. I thought you guys may know of a product to recommend to enable me to do this? I ask as I saw the BMW you restored. My R75/7 is in much better condition than the one you restored. The bike I have was inherited from my dad. He bought it new in 1977 and it has only 37,000km on it! — John/via email
A: Several readers emailed to ask about cleaning the aluminum engine casings on our project BMW. Editor-in-chief Richard Backus did that task himself. Richard says he used a variety of techniques, some more useful than others. He tried steam cleaning, which worked well enough a couple of projects back on the Honda 500 but did not work on the BMW. He also tried several solvent based products, but reported that the best results came from using Simple Green soap, a scrub brush and elbow grease.
--MC
--John
(Sorry if it wasn't what you were wishing. )