Driveline and Suspension/Handling
If you went the full monty and opted for one of the various SR20DET engines, you have probably realised by now that traction is a serious problem. If your P10 doesn’t have an LSD gearbox, but instead the open diff, this should be your next modification to ensure you don’t wheel spin your way down the road; that, and third gear tends to blow to pieces with a power increase. There are a few options depending on your power levels; the Nissan Pulsar N15 VZ-R gearbox has an LSD, but is a very close-ratio unit, perfect for keeping the SR16VE unit on song. This unit is great for your modified naturally aspirated SR20DE/VE, but not ideal for the SR20DET. If you did opt for the turbo engine, some P10 and P11 Primeras came with LSD gearboxes from the factory, so track one down, along with a heavy duty clutch as the stock unit won’t last long at all. Now that your Primera goes fast, you’re going to want to be able to stop at some stage. There are a few affordable upgrades such as the Avenir W10 turbo calipers, as they are twin pot, run a larger disc, and best of all are a direct bolt on. By far the best upgrade however, is the Nissan Skyline R32 GTS-T, Sumitomo, four-pot caliper. The caliper bolts straight up, but you will need to do some other modifications to get the disc to fit. The disc itself needs 6mm machined off of the radius, and you will need the top hat redrilled for the Primera’s 4x114.3 stud pattern. The next hurdle is getting custom brake lines made; this is fairly affordable and can be done through any brake specialist company. Once you have everything bolted up, get some high-quality pads and you’ll out stop most things out there. As far as suspension goes with the P10 chassis, the best upgrades you can do are fairly straight forward. Purchase either a good set of shocks, like Bilstein, or KYB SR Specials, mated to a good set of lowering springs. If the budget permits and you have the coin for a cert, opt for a complete height and damper adjustable coilover package. The P10 chassis responds extremely well to a larger rear sway bar, so this should also be considered. P10 Primeras are getting fairly old now, so it’s a good a idea to jump under the car and replace all the bushes that have worn out with Nolathane or a similar urethane compound, which should really stiffen things up and help eliminate some of those pesky squeaks.