VK56DE (QX56) swap into a VK45DE (FX45)

[Chedman13]

I have a 2003 Infiniti FX45 and thinking of swapping in a VK56DE off a Nissan Titan or Infiniti QX56.

What do I have to worry about?

Are these blocks the same, just the VK56DE being bored larger?

I plan on using the Stillen Supercharger on the VK56DE, how do I upgrade my stock transmission to handle this new power?

Any help would be appreciated -- I couldn't find any exact projects using the search.

[newbissan-tech]

i'm a technician at the local nissan dealer, what is fx45's nissan equivilent? is it the pathfinder? if so they make the pathfinder with a 5.6 in it now. so if this is the case there would probably be alot of interchange! lmk if you need any specs or other dealer info!

[Carl H]

fx = murano.the real trick would be the ecu.if you can slap the vk45's manifolds onto the vk56 then it might not be too bad with just a reflash to handle the increase in dispacement.

[newbissan-tech]

ah ha i should've known that. idk if that's gonna fit, isn't the chassis a front wheel platform? or the optional all wheel?

[Chedman13]

ah ha i should've known that. idk if that's gonna fit, isn't the chassis a front wheel platform? or the optional all wheel?

I found this:http://www.titantalk.com/forum...t.pdf

It's the front mid-ship platform shared by G35/350z/FX35. Mine is an AWD FX45.

I hear the Murano is a much different beast than the FX35/FX45.

Stillen looks like it has it's own engine management that comes with the blower for the VK56DE.

[elwesso]

the murano is a lot closer to a maxima/altima than a FX, the FX is more like the G35/350Z as the above just stated...

sounds like a royal PITA, would be easier to turbo the VK45 IMO or do work to that, than to swap in a 56 for a lot more effort and for what, not really that much.

[Carl H]

wonder if the vk56 rotating assembly will fit into a vk45...course a 1.1l increase in displacement is quite substantial.

[Chedman13]

the murano is a lot closer to a maxima/altima than a FX, the FX is more like the G35/350Z as the above just stated...

sounds like a royal PITA, would be easier to turbo the VK45 IMO or do work to that, than to swap in a 56 for a lot more effort and for what, not really that much.

My thought was the swap + the bolt-on Stillen blower. That would be a nice amount of torque.

[newbissan-tech]

wow that's nuts i would have thought the fx and murano would be closely related by just looking at them but you guys are totally right, the murano is a maxima style front engine front wheel set up with the engine mounted sideways. I would like to think it would fit if you could make a different manifold, good luck man this would be pretty sick if you could pull it off!!

[MinisterofDOOM]

It's the front mid-ship platform shared by G35/350z/FX35. Mine is an AWD FX45.

I hear the Murano is a much different beast than the FX35/FX45.

Yes, you're right. You can more or less think of the FX (in all it's variants) as a G35 wagon. It's a little bigger but has quite a bit in common with the G.

Murano has a transverse motor and is related to the Altima. Entirely different beast. It's platform is called "FF-L."