I'm talking basic engine block. What was done to increase the HP? I haven't done any research and just feel too lazy today to find out myself....

 

As far as i know its the same. I think they put some stuff on the pistons make it run a little smoother. I know the ecu is different

 

Has new Intake Manifold (Black), new exhaust valve, and others, i dont remember the rest.

 

The intake manifold is made of thermoplastic material that increases the intake efficiency. Also, the exhaust system uses some sort of a butterfly valve in the variable path exhaust that opens and closes depending on the exhaust flow. The camshaft profile is also different. Mainly, it's just a lot of tweaking done to the previous engine.

 

so if I went to a junk yard to find a wrecked maxima but with good engine and managed to buy the thermoplastic piece, I'd be able to run better? hum?

well, recently busted my rear bumper (inspired by the old lady in the carfax.com advert) so have to go to a junkyard to buy a used bumper since most of my $$ is being channelled to modding my car.

 

I can only asume the intake is smooth on th inside. (kinda like extrude honed? maybe?)

I wonder what would have to be done to use the camshaft as well.. or if it would make any difference...
hhhmmmmm......(deep thoughts by Jack Handey)

 

Before even trying to add the new pieces of the 5th gen maxima engine, you would have to get the new ECU and make sure it is all compatible. Sounds like an interesting project though. Maybe you can get more performance out of it than the Nissan engineers since you would only be concerned with performance.

 

intake and y pipe should give u about the same hp as the 2k.

 

Yup that's what I remember, too. I knew that there was a new exhaust valve.

 

The block design of the DE-K is slightly different. In addition, about 50% of the internals have been redesigned, for even LESS friction! ce:

Of course there's the intake manifold. From what I hear it's actually made of resin. It's a dual path design...long runners for low rpm's which opens up to shorter runners at high rpm's.

The intake ports on the cylinder head are different too (I know because I asked Brian Catts if a manifold transplant into a 4th gen would be possible, and apparently this is why not, the manifold won't line up with the 4th gen's intake ports.)

I think that the variable-flow muffler is just a marketing gimmick...most of the extra power comes from the new manifold, and maybe 3 or 4 from the muffler (not any more than you'd expect from an aftermarket muffler).

 

The variable-length intake runners are what really did the trick for the 5th gen. The muffler isn't as much of a big deal. And like the others said, the 5th gen ECU would be a good idea so that you can take full advantage of the intake changes. And think: You'll probably still weigh less than a 5th gen, too!!
If you'd really want to get ahead, find out if the HKS exhaust for the 5th gen would fit. Turbo Magazine said it squeezed out even more power than the stock exhaust.

 

maybe a 5th gen swap? hhhhmmm......
Then supercharge it,aaarrgggggg.......