Re: Valve Bay Surprise

Posted by Owen_Dyneto On 2015/5/27 10:41:47

As far as solvency goes I think that carb or brake Cleaners would be a good choice, but in so doing especially if you're doing to spray it you're likely going to distribute some of the grime and sludge elsewhere so you're going to have to follow up that cleanup with another very thorough cleanup from the underside. Plugging the oil return holes in the valve chamber will mimimize some of that but you'll still likely get sludge and grime into the cavities of the cam followers, at the least. Were it mine, I'd remove the valves, springs and hydraulic units, plug the top of the cam followers with tape or a cork or similar, ditto for the oil return holes, and use lint-free rags wet with solvent. And just to be safe, I'd follow up that up with a cleaning from the underside. The risk of course is that some of the grime and sludge may get into places where it can then creep into cam, rod and main bearing surfaces, cam lobes, etc.