Ok cool I will follow the same for the compression test.
thanks to both you,
So I can just Tap 1/8” npt anywhere on valley and convert to a -4 to say a Moroso Analog gauge for now?
What kind of readings should I see during idle, during a run etc. what’s the good and bad spectrum?
Sure you can plumb a gauge in the driver comp with -4 or -3 or pushlok. WHat vac should you see....hard to say, what your looking for is that it doesnt drop severly during a pass. It can be 5-7 at idle and 10-15 during a pass. Or it can be higher or lower, what your really looking for is consistent readings.....when the vacum decreases your losing ring seal or have a leak somewhere else ( valve cover, timing cover pan gasket etc) The reading while making a pass is whats important. Especially for a nitrous engine, its the best indication of how well the rings are sealed up
