ploughmyfield.com

I’ve used an acid etch primer on the block a first coat that will stick. Its not cheap but I’ve been impressed with the results from the aluminium parts. I masked up all the remaining holes. I ran out of paint so had to get another can. I also bought a high temperature paint for the exhaust manifold. It’s been in the tank of degreasing solution for about a week. I looked at it today and most of the carbon on the inside has broken down. Normally this is removed with a rotary wire brush with lots of noise and dust. The guys at the engine remanufacturing shop in Leeds where I took the crank and block to be ground recommended this method as the best way of removing carbon build up.