Unlike other engines that are sold for the XR6T our engine are 100% designed and tested. What does that mean, let me explain. Nizpro have used readily available off the shelf parts for these engine from time to time and we have tested these components using our in house engine dyno. Any one who has come here and watch the pain we can dish out on the engine dyno compared to what you can do on a chassis dyno or the road, knows what I am taking about. What this teach’s us is what problems we will see in the future under less stressful conditions. The parts will still fail it may just take longer. This is the reason we see failure way before others do.
We were the first company to express the limitation of the connecting rods, while other argued black and blue that they were not a problem we had already tested and measure how much power the standard connecting rod would take. Oil pump gears, flywheels and flex plates coming loose, thin cylinder walls on the front cylinder of early model engines and the list goes on. History now shows us that these parts do absolutely have limitation. Our testing simply showed these problems first. In the early days we were often criticised for selling parts that many didn’t believe necessary once again the consensus now days is that if you want 330 rwkw up on a BA engine best you build yourself a good on.

So why are our engines better? Well the same advanced testing still goes on and we have found serious problems and reasons of why a new design of piston and connecting rod is needed. We needed a very high strength piston while still remaining a light weight. This simply is not available as an off the shelf design. You see most companies simply copy the original design and then make is out of stronger material. This very often works however this thinking only carries you so far. Weight at high rpm is not a great thing and can introduce harmonic problems that tend to bash the engine up. Flywheels come loose, piston skirts have extremely high wear and bearing now take a hammering.

Our latest spec engines have good solutions for these problems and have parts designed specifically for them.

I Hope this gives you some idea of what can be involved.
Cheers Simon.