Nissan Xterra Aluminum Differential Cover Review
Xterra Racer preps for race
In desert racing, as in life, the more you take care of the little things, the more the bigger things tend to fall into place. This was the thinking behind Dave Blakely’s (owner and primary driver of the 3100 class, #3112 XterraRacer) decision to swap out the stock stamped steel rear differential cover for an aluminum one. In preparing the XterraRacer for the August “TSCO Vegas to Reno” race, it became clear that every critical system in the truck would need to be in top shape for the Xterra to complete all 560 brutal miles that the course would cover. Dave felt that one area that could be improved with a simple modification was the reliability of the Xterra’s rear differential. Operating in the Nevada summer heat (where ambient temperatures can easily reach 105+ degrees) and traveling at speeds nearing 100 mph, all the components and fluids in the rear diff would be subject to about as an extreme condition as any Nissan is likely to face.
Though the XterraRacer (like all Nissan Xterras and Frontiers) came from the factory with a stock steel rear differential cover, Nissan has been nice enough to manufacture a finned, aluminum replacement diff cover. Available at any local Nissan dealership, not only will this swap upgrade your Xterra diff but will also work with most Nissan Frontiers and Titans as well, given that all three models (in various forms) use the same rear differential housing. As it is a factory replacement part, the finned aluminum cover is a direct fit with zero modifications necessary. Installation is as follows, though these directions should not be considered comprehensive or a substitute for someone with hands-on experience.
Well, in its first race after installing the new cover, the XterraRacer covered all 560 race miles with zero problems involving the rear drivetrain and finished third in its class. While the additional cooling the new rear diff cover provides may not have been the primary reason behind such a solid result, it certainly was one of the many “little things” Dave Blakely has done to ensure a shot at the class 3100 Best in the Desert season championship. |