In addition to polishing the surface, Mikronite imparts residual compressive stresses (much the same as shot peening) to the surface and near surface substrate. Cracks cannot initiate in areas of compressive stress. Cracks initiate in areas of tensile stress. From what I have read, another advantage of mikronite (compared to REM or just polishing) is that mikronite does not change the profile of the gear teeth. Any uneven polishing of the gear teeth can affect noise and vibration and compromise ultimate strength of the gear teeth.
I would imagine that mikronite could be used with cryo for a super strong piece. Let's face it, cryo does not affect the surface finish and the real benefits of cryo are deeper in the material. Mikronite works at and near the surface.
I had it done to a new 3.73 set (same as original) in my 2WD Tahoe for theRWHP and fuel economy improvement. Still putting mileage on the new wheel bearings before Vinci dynos it for a accurate HP assessment! Mileage looks like it has gone up about 1.4-1.6mpg on my normal highway driving. That seems like what it should be if there is a 10 -14 HP increase at the rear wheels. SOTP, there is a definite HP gain. We will find out how much soon. I will be sure to post. |