I'm in the process of restoring ten Briggs & Stratton motors for my Fox Campus restorations. Besides removing a fifty plus years accumulation of mud, grease, weeds, grass, insects, and gunk; I am also faced with the problem of removing massive amounts of carbon deposits from the cylinder heads and valve assemblies. I'm familiar with all the commonly accepted methods for removing carbon like grinding, scraping, gouging, wire brushing etc. And because they damage the finish; I reject them all. Even the $30.00 a gallon chemical dip was a waste of money. So I decided to experiment a bit. I had a gallon of House of Kolor RU310 reducer sitting on the shelf and figured "what the hell I'll give it a try". The results blew me away. Using a tooth brush, popsicle stick, and q-tips; I was able with a bit of scrubbing to obtain the results below. Pic one below shows the reducer that I used. Pic two shows the same head after ten minutes of scrubbing. Pic three shows the head as it was removed from the motor. Pic four shows the head after it had been cleaned and lightly glass bead blasted. The area where the gasket fits has not been blasted. The last pic shows the head ready for primer and paint. This is not a miracle process where you can dip the part overnight and it will come out shiny clean but it sure makes the job easier and doesn't scratch the hell out of the aluminum part. Ogy
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