Does anyone out there have experience using pressure washers to clean really grungy engines? I bought a 1986 Pontiac Bonneville, complete car with a small block 305 and turbo 350 in it for $250. The engine runs well, the car was actually driven to my house from about 40 miles away---no knocks, leaks, or smoke that I could detect. This engine is destined for use in the roadster pickup I am building, and no, I,m not going to tear it down, nor modify it. However, Oh My God, its dirty. This thing is now out of the car, setting on my engine stand, and I am sure it has never been cleaned since 1986. We are talking grime built up 2" thick in some places. I have removed the HEI distributor and carburater, and sprayed the engine with Gunk degreaser, then wrapped the whole thing in (don't laugh) saran wrap, to keep the Gunk from evaporating. I called the local rentall place, and it seems they have 2 sizes of pressure washer, the 1000 PSI model, and the 2500PSI model (which they tell me is used for stripping paint). I have rented the 2500 PSI model for this coming Saturday, and I'm just wondering if there is anything in particuler I should know, other than "don't look down the barrel and pull the trigger". I have removed the alternator, there is currently no wiring harness, and I will probably pull the starter off just to get good accesss to the side of the block. Is this going to work O.K. or am I going to damage something? I plan on putting on a chrome oilpan, valve covers, timing cover,with new gaskets, and repainting the engine to match the body colour. (Chev SSR "slingshot yellow")