Due to lack of online info on the VG JDM engine swap, I've decided to revive this post and hopefully help someone out there who is contemplating the project. Our trucks are up there in age and most domestic Xterra and frontier engines have extremely high milage, a JDM engine is definitely the better option and relatively inexpensive.
Post #4 basically identifies the necessary steps to complete the swap with maybe a few additional things. I did not encounter issues with the starter, so didn't need an additional spacer other than the original starter bracket. Also since the intake manifold is being swapped, I managed to utilize the original wiring harness without modifications to the connectors.
See steps below;
- swap rear of engine coolant lines (two hard lines)
- swap Knock sensor ( or relocate if you wish since it's a pita to access )
- swap accessory brackets
- swap upper intake manifold ( use new gasket )
- swap harmonic balancer if not identical to original.
- swap MT flywheel or Auto flex plate
Things to consider prior to installation;
- New rear main seal
- New crankshaft front seal
- New water pump
- New thermostat
- New timing belt kit
- New oil pan gasket ( gasket set includes two halfmoons & rtv )
- New valve cover gaskets ( known to leak )
This all seems like a ton of work but in reality it's quite easy, as long as it's done with the engine outside the engine bay. Take your time and have a checklist to follow along.
I recently completed my 4WD low mile trans swap along with the JDM engine install. While there, installed a front Lokka. Unfortunately did not take many pictures of my progress due to being on a tight schedule, but feel free to ask me questions.
Happy wrenching!