| sound. The problem here is that the regulator on your compressor, like all regulators, doesn't guarantee proper regulation when there is a flow. The high side pressure, regulator orifice size, the percent which that orifice is eclipsed, and flowrate all come together to give the low side pressure. The leakdown value is unit-less because it does not reflect any real useful data except a standard for comparison. Standard here is the key word... the orifice provides that standard so that leakdown values can be compared. .040" is arbitrary but assuming everybody follows it, its great. In your test your flow rate was not regulated, giving you false good readings. Had the orifice been in place, the flowrate would have been set and effected a greater pressure difference. I.E. your engine may be worse off than you think. The only TRUE measure of a cylinders "leakyness" would be the CdA. Coefficient of discharge times the effective area. Actually finding the CdA of each cylinder is not something everyone can do. ...that's why you NEED the orifice. Its sets the last variables giving the equation zero degrees of freedom. :) Savvy?
 
Daily driving a TT is like ordering your favorite pizza for breakfast lunch and dinner. It's not healthy and eventually you will lose the magic of the meal. Sometimes you just have to have some meatloaf. My new meatloaf.... 1994 Black Honda Civic DX :D "...people often mistake charisma for integrity. Sure, he's a nice guy, but that doesn't necessarily make him honest (or dishonest). They are independent variables." -Kenny |
