A sealer such as Loctite 518 is applied to the bottom third of the cylinder to keep it in place and to prevent oil from migrating up between the bottom end of the sleeve and the block. Anything that gets between the sleeve and block (be it oil, carbon deposits or even air) can interfere with good heat transfer. With water-cooled cast iron blocks, the general recommendation for installing dry flangless sleeves is to use about .0015Ë to .002Ë of interference fit.
Golfer's vasculitis. Golfer's vasculitis, exercise-induced vasculitis and hiker's rash, are names proposed by different medical researchers for a form of vasculitis resulting in a purpuric rash (bleeding from underlying tissues). It is often experienced in the lower legs caused by excessive exercise in hotter temperatures.
Heat Rash - Prickly Heat. Unlike golfer's vasculitis, prickly heat is itchy. It is triggered by blocked sweat glands and causes raised itchy red dots or bumps. It is best treated by getting out of the heat for a few days and not scratching the area. Heat Rash and Prickly Heat.