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Engine swap
Posted: Sat Dec 19, 2015 3:30 pm
by davidjd2409
Just curious if anyone had tried to swap the 4.0 to a 5.6 my engine died on me and has internal parts that busted need a new one and was thinking what'd the best route to go? swap for a 5.6 or put a used one or remanufactured one, and turbo the 4.0
Posted: Sat Dec 19, 2015 6:40 pm
by disallow
what year pathy do you have?
Would also involve a ratio change in the rear end, and front if 4wd.
Posted: Sun Dec 20, 2015 5:36 am
by smj999smj
You'd be better off replacing the VQ40DE. If you want a V8, it would be cheaper and a lot easier to buy an R51 that come with the V8. To swap in the V8, you would need a whole lot more than just the engine, including the ECM and wiring harness.
Posted: Sun Dec 20, 2015 6:59 am
by Kestral
Just wondering anyone know how much a reman VQ40DE cost?
Posted: Sun Dec 20, 2015 9:04 am
by skinny2
Kestral wrote:Just wondering anyone know how much a reman VQ40DE cost?
I dunno, but considering how cheap you can buy a salvaged Pathfinder....if I decided to keep this thing forever I may just go buy one. I've seen low mileage '11-'12 models sell pretty cheap. Besides body damage and blow airbags the power train was likely fine.
Posted: Fri Jan 08, 2016 11:19 am
by NmexMAX
disallow wrote:what year pathy do you have?
Would also involve a ratio change in the rear end, and front if 4wd.
Not necessarily a ratio change, but certainly beefing it up with a V8 units from either an Armada, Titan, or V8 R51.
Posted: Fri Jan 08, 2016 12:55 pm
by skinny2
There's been some V8 guys swap in a V6 differential to get a taller gears. I don't think they've had any strength problems.
Posted: Fri Jan 08, 2016 1:34 pm
by NmexMAX
skinny2 wrote:There's been some V8 guys swap in a V6 differential to get a taller gears. I don't think they've had any strength problems.
Not sure about that, it be a lot easier to just swap an Armada(Big Tow) or QX56 diff (any) to retain the beefier ring gear/diff assembly and still get the 3.36 ratio. That's what I did and everyone else I know. Haven't heard it the other way around.
Posted: Fri Jan 08, 2016 3:13 pm
by skinny2
Yeah, my memory was way off on that. They were swapping Armada gears. It was just the ratios that were the same between the Armada and V6 PF. I wouldn't mind driving a PF with this mod. When I was buying mine, the V8 didn't feel any stronger than the V6. Actually less gutsy at passing which is important to me with the roads I drive.