So I've decided to change directions completely. I was at a point where it would take mega squirt or some other form of engine management to get my motor running up to par. The excessively long warm ups and lack of tuning ability was ruining the fun I could have been having with the car so it sat in the garage and was rarely brought out to play. The choice was to mega squirt an already aging motor that would just be waiting for the next road block OR go with a different motor entirely. As much as I love a turbo car there is something about N/A that's just more pure..and reliable. I opted for an RB25DE again. It reminds me of a modernized version of the 432 240z, dual over head cam and all the modern touches while keeping true to the n/a straight six heritage.
I had put a DE motor from an R33 in my previous 71 Z project in 2008:
This time around I found a RB25DE NEO motor out of a 99-02 R34 Skyline. The differences are roughly 200hp vs 185hp in the R33, solid lifters rather than hydraulic, revised camshafts, with on/off solenoid Variable VCT, a hotter 82 °C thermostat, model-specific coil packs and a revised inlet manifold (the runner diameter is reduced from 50mm to 45mm to increase air velocity and low end torque) in particular the RB25DE NEO which had two inlets going into the inlet manifold. The combustion chamber of the head is smaller so GT-R spec connecting rods are used to compensate as well as model-specific pistons. All in all they are quite a different engine in their own right - a culmination of 20 years of Nissan RB engine building rolled into one. (stolen from wiki)
Here she is:
The sound of it is intoxicating