title says it all, anyone know the difference between the 04-05 Alitima SE 3.5l engine and the 350z 3.5L engine? Also, if both engines are the same size, or are interchangable that would be good knowledge to have as well

 

For sure they are "not" interchangeable. The Altima is transverse mounted and the mounting points etc are in different places on the block when compared to the Z or G configuration.

 

^Though the Altima head seems to work with the VQ35DE, also it seems to increase the compression in the DE.

 

I don't know the differences between all the 3.5 liter VQ's, but I know they're all called VQ35DE (VQ is series, 35 = 3.5, D = DOHC, E = multiport fuel injection)

 

that whole diagram thing is pretty silly because altimas dont have carberators to my knowledge, and i know the altima has variable valve timing. The only difference i see between the two engines is the intake methodology, and compression according to some replys ive gotten

 

Altima and Maxima = FWD
350z, Fx35, Murano = RWD

Compression difference is from the headgasket only. The one on the FWD vehicles is thinner its 2 layer instead of 3 layer. Not a big difference. 10:3:1 vs the 350z 10:1:1

 

The 350Z's VQ is 10.3:1 compression

 

Murano is FWD or AWD

 

when people post please research your facts so we can make this a very educating post, no one makes a rear wheel drive SUV crossover, thats just dangerous, i think Sz28r is correct in saying the SUV's are FWD or AWD, and obviously the z is rear wheel.

I like the info people are putting together here, so do people agree that the ALTIMA ENGINE HAS SAME COMPRESSION AS 350Z ENGINE? I see two difference arguments.

 

The motors are identical minus the engine mounting points, intake manifold and exhaust manifolds.

 

nice BriGuyMax
thats what i was thinking, now the question is if i can implement the 350z intake manifold on the altima to get the same amount of HP.

 

The "DE" designates two things.

D= Valve Train-DOHC
E=Fuel Delivery-Multiport Fuel Injection

The VQ35 is the same as the VQ35DE. The VQ35 is just a partial engine description. If you add the T (VQ35DET) that designages turbo.

 

There were guys that wanted to do this a while back in maximas and I believe the problem is since the Z's intake manifold is for a longitudinally mounted engine the rear of it sticks up A LOT...so much in fact that the hood on the FWD car wouldn't even come close to closing. I don't think the altima/maxima manifold is really that bad...based on the power that modded maximas (stock manifolds) put down to the wheels, I'd say that most of the restriction is in the exhaust.

 

i see, how much is alot, like to high to modify the hood for the intake manifold to fit? i'll do a little more research into the hp/tq on the altima's, see what aftermarket exhausts do to the stock performance. Why do you think stock exhaust is the power restriction

 

Maxima.org member Emax tried to fit the 350z manifold on his 02 Maxima and decided it wasn't feasible. Another org member is currently trying to modify the stock manifold for better results and a company called SSR Engineering is looking into creating an entirely new manfold for the VQ35 Max and Altima. I believe both parties are running into difficulties.

 

i see, well it deosnt seem like those engines are missing out on more than 10 hp, which is significant, but not enough to pour in $1000's dollars, and days of time to get. Thanks alot for your help people. If you have any suggestions how to improve the stock performacne on the VQ35 without the basic bolt on stuff, let me know i'll be itnerested

 

The Alitma also has a VQ35DE.

 

do all VQ35's have the same compression ratios across the board? (max, altima, g's, z's, murano's)?

 

I'm pretty sure they do...

 

As BriGuyMax said they're all VQ35DEs, however intake manifold, exhaust manifolds, mounting orientation are different.

Also, 2-layer vs. 3-layer head gasket(doesn't affect CR), injectors are 270cc vs. 350Z 290cc, and ECU are different.