on the outside-take some denatured alky and get a bunch of rags tooth picks and q-tips along with the trusty ol toothbrush and pipe cleaners. This along w/ the elbowgrease will get it look spliffy w/the quickness[>:] also-i like to spray a little wd-40 on it after i clean it to repel dust.

On the inside- I do this after race day. Go home and get all the dirt out of the glow plug and carb area. Then pull the carb out and pull the glow plug out. Put a little denatured alky (use clean on this-do not recycle!) and swish it out a few times then put a healthy coat of after run oil through all the parts and the re-assemble.