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Checking the spark plugs is an easy thing to do and goes hand in hand with the next topic of a compression check. Check Your Spark Plugs: Spark plug condition can tell you a lot about an engines health and function, so it is imperative that you see just how healthy your motor truly is. Another thing to add is that the TT oil pump is cheaper then the Na one by around 15-20 bucks so why not. The tt pump will supply increased oil pressure since it was made for a turbo setup. Na oil pumps will work just fine, but if you are replacing your oil pump you might as well get a tt oil pump. If your oil pressure is low even after installing an aftermarket gauge, replacing your oil pump will need to be added to your budget. Even with a properly functioning gauge it isnt a bad idea to purchase a aftermarket gauge to ensure precise readings. Your motor may be running just fine in Na form but with turbos you will need healthy oil pressure to keep everything lubricated and functioning properly. If your gauge reads low, DO NOT assume its acting up and boost your motor anyways. The stock gauge for oil pressure has been known to be finicky and its possible your gauge is acting up. If your oil pressure is low in both these scenarios i would recommend purchasing a aftermarket oil pressure gauge and testing this once again. If this holds true then your oil pump is functioning within the proper spectrum. Oil Pressure: (easily seen on the 300zx gauge cluster) at idle optimal oil pressure reading on the stock gauge is at the first tic or rather right around 30psi, under acceleration the oil pressure should rise to near or above the second tic or 60psi. Some easy things you can check before getting started with boosting your motor are oil pressure, spark plugs, and a compression test. Power goals and parts recommendations to reach those goalsīefore we get started, we need to check a few things to make sure that the motor you plan on boosting is healthy enough to withstand the increased power levels. Basic parts needed for a stock TT setup on your (10:5:1 compression motor) Engine health, and tests to do to make sure your engine is up to the task In this guide I'll be talking about these key points: In Depth Guide To Turboing Your NA Compression vg30de Motor (300zx):