Hey everyone,

I just got the 2007 altima lower intake manifold in the mail today (Thanks Dave B.!). I'm going to install it on one of my friend's spare VQ35s to see about fitment. I've only seen my LIM from the top and haven't really looked at it in detail so maybe someone could let me know if they are really close.

Here's some of the pics. Notice the rectangular runners that mold into ovals as they meet up with the heads.





Any input?

 

More pics from the bottom:

 

Maybe I'm out of the loop, but what's the intention with this?

 

to use the upper....

 

Dual PV's FTMFW!!!! No dyno no care.

 

What's the 07 Altima rated at ?

 

they look like they suck lol
j/j i have to say once you do it everyone will b like please do a write up and all that stuff
anyways if i can help give me a call
LA02 FTW!!!
-Jared

 

Yup Now to find where the power valves activate.

Here's a dyno from nicoclub of a new '07 alti:



Pretty impressive if you ask me. It weighs the same as the 5.5 gen which further supports my guess in that those cars are in the 13s stock...One thing I'm not too happy about is the upper powerband....we'll have to see what we can do about that

 

270hp/258tq....

 

lol thanks jared. I have to see when frosty is available so I can use his engine After that, if the fuel rail fits fine I'll order the upper and start pioneering

 

the horsepower is good, not to mention a pretty high amount of torque throughout

 

I like that dyno One day....

 

I kind of figured, I just had no clue what was different about it.

 

In...

 

looks interesting...

 

how much did the LIM run you through DaveB? I need to pick up a 3.5 LIM at some point.

 

I'm not sure if you saw this post or not, but here's a picture of the HR head inlet ports.

http://forums.maxima.org/showpost.ph...3&postcount=29

 

Some of us knew it already used the same lower im to head gasket as older 35's

 

Lower was $58, and he told me the upper is $200. Not too shabby IMO.

Thanks Mike. I did see that post and actually that was what pushed me to go ahead and buy the lower because at some point I thought the inlets were rectangular just like the IM runners.

 

Moot point maybe, but they also have different cams.

 

And a different VTC range...I'm not saying that dyno will reflect what mine will look like, because I'm sure the IM is a small piece to the puzzle. I just posted that dyno for reference...

 

Hmmm...... Be nice to see some VTC curves from them.

 

I am 95% sure it will fit the heads, it is just the smaller things like will the fuel rail from the older VQ35 fit, and where the valves open that are more of a concern.

 

It will fit the heads.

 

Yes they are, and the same as nothing else! Nissan also lists them as a packaged set of 4 with one part #. All other VQ cams have individual #'s. Also, all the other valvetrain pieces are different from Revup or HR stuff, and share only the lash bucket with "regular" VQ35s.

 

any pics of the difference? its not an HR motor, but does it have dual TB, different plenum deisign? what makes it better? i have yet to see one

 

It has a dual vias as stated above.

 

It has a single TB still, but it has two power valves that make it 'dual' variable. I'll try to get started on fitting the fuel rails this week. I saw a picture of our VQ35's LIM and I must say it didn't look promising, but we'll see.

 

240/240 as opposed to the previous 238/240. Gross lift looks to have gone up .6mm. The most notable difference as far as the valve timing events is concerned is that the intake valves close @ 70° ABDC compared to the previous 64°. More intake cam retard @ high RPM, that's for sure. Exhaust valve timing is similar.

 

LA02Max.... im standying by for your results! Best of luck with the project, cant wait for some dyno comparisons

 

any pics of upper .. anybody ? is it plastic or metal?

also if this IM is decent iam hoping the E TB bolt locations are the same as the DE 3.5

 

whats the diff between the orange line and the blue line on the dynograph?

also, is there a way to put both the 5.5 maxima baseline dyno with the 07 altima baseline for direct comparison?

 

It's plastic

Here's a diagram of it. It's made of black plastic


Supposedly the TB is a different part number, so the best I can do is just compare everything. We'll see how it goes. If the lower works fine and I get the upper and find the TB doesn't work, I'll have someone fab up an adapter plate for me.

I thought it was uncorrected vs. corrected numbers but now that I look at it I'm not sure. I'll PM the guy on NICO and ask.
He didn't have the runfiles so there's no really accurate way to put the 5.5 gen vs. altima dynos together. You can compare them, but it won't do much for us considering there are a few more changes to the engine besides the IM.

 

I just popped the hood on my car, and the TB does look quite a bit different than the one pictured. The electric butterfly valve motor is on the opposite side and overall the shape is changed. We'll see how the bolts and everything else lines up and hope for the best I guess. If it doesn't work, oh well. At least we'll know it for sure

 

Have you figured out how you're going to activate the power valves yet?

Slightly OT, but can someone hook me up with a 2007 Alti FSM? Because I hate asking these questions when I know the answer is in there. PhatG20 doesn't have it yet.

 

Bunches of FSM's

 

Thanks Nietzsche. I found a lot of information on when the power valves activate with that FSM.

It works basically the same way ours does, but in some conditions (closed loop) only one of the power valves are open. It uses signals from the crank POS, MAF, Coolant temp sensor, TPS, Acclerator pedal position sensor, and the battery voltage to determine it...In this case, anyone have any suggestions? It did mention that both power valves are open at the upper 'speed' range and closed at the lower, but using a window switch to do something like that would negate the benefits of the 2 power valves...Do you think the control solenoid valves and actuators would do their job using the singals from the stock 5.5 gen sensors?

 

You only have one "signal" coming from the ecu for VIAS control.

It all depends on how much control that you want. If all you care about is WOT, then a window switch for each would do.

If you want to add load as well as rpm as your controlling parameters, then you will need to go to a map-based controller (an EU for example)

 

Either Emanage can control it based on load and rpm.

 

I am not very familiar with the EB.
There are no relay outputs that I am aware of.

The VTEC output is not map-based and only has the functionality of an rpm switch.

Do you use the additional injector maps and set the duty cycle to 100%?