RE: Cleaning Engine
i havnt used denatured alcohol, although iv heard that's good.
i use paint cleaner (white spirit) with a toothbrush to get rid of all the grime (with the carb plugged up with a bit of tissue). Then i let it dry, then spray everything with WD40. i like spraying the whole car with WD40, it makes all the parts look brand new and jst lubes up some metal parts and prevents corrosion.