Hi Chuckie,

Good idea. In stock form, the QR25 is much better than the QR20 -- 25% more swept volume! If you are going to turbo it, well no worries, just use custom rods & pistons...

It seems no one has investigated which transmissions will fit (if any). Perhaps you will have to make a bellhousing adapter plate. Also in the Sentra it has fly-by-wire throttle, and it seems no one has back-fitted this into an older car.

Some information is here: Nissan QR25DE 2.5 liter Engine in the club Tech Section.