[djpeetur]

one a 5spd 3.5 altima what rpm does the variable timing kick in

thanks

 

[e-squared]

It is a Constantly Variable Cam Timing, so it always adjusting depending on many variables, throttle position, load, and etc.

So the answer is 0-6500 rpm.

 

[ThaiBruin]

Is that a Camry?

djpeetur.... is that a Camry?

 

[02SilverSE]

In my auto with JWT Popcharger I can definitely hear
a difference in tone around 4000-4300 RPM's.
It should be the same whether u have auto or manual if
I'm not mistaken.

 

[ThurzNite]

Wow...for a moment there, I was thinking Variable Timing Cam...which are known in the VE30DE engines (92-94 Maxima SE) to exhibit "click of death"...
http://www.geocities.com/bracecraig/maxima/vtc/vtc.html
It was also proven that VTC does improve dyno numbers.
Jae

 

[1337]

In my auto with JWT Popcharger I can definitely hear
a difference in tone around 4000-4300 RPM's.
It should be the same whether u have auto or manual if
I'm not mistaken.

I have an auto too with just the free WAI... You can definitely hear and feel the engine opening up around mid 4000.

 

[ThurzNite]

I have an auto too with just the free WAI... You can definitely hear and feel the engine opening up around mid 4000.

are you sure it's not the intake runners switching over? My bro's 93 is noticable when WOT, but not when cruising. Happens just short of 4000. His 2000 Maxima SE 5sp is less noticable...u really gotta be in tune w/the car to notice it switching over. I had a friend ask if the 93 Max had VTEC cuz it kicks damn hard right before 4000...and I usually shift around 3000.
Jae

 

[BryanPendleton]

The SE Altima engine, utilizes a variable cam timing on the intake side only. As mentioned above the ECU uses variable, such as RPM, Throttle Position, Temp, etc, to constantly adjust the mechanical timing of the intake camshafts. It is equivalent to have adjustable cam gears, that are dialed-in for peak torque at all rpm's (i.e. 1 degree may yield peak torque at 3000rpm, but at 7000rpm it my be 5 degreees, and the variable cam timing would provide just that, 1deg at 3000rpm and 5deg at 7000rpm)

The SE engine also utilizes an intake manifold that has two paths to the cylinder head. One path is long and small flow area, which is good for low rpm torque, and another path that opens up the flow area and is a shorter path to provide the motor with the air it needs at high rpm, just improving high rpm torque.

My guess is anything you may "feel" is going to be the when the additional intake runners open up on the intake manifold.

 

[FAST4DR]

I would say you are definately hearing the intake runners open up. My SHO has a profound change in sound and power when the runners open at around 4000rpm.

William

 

[AlphaFox]

4 cyl also?

If im not mistaken, the 4 cyl engine also has these features. doesnt it?

 

[BryanPendleton]

Re: 4 cyl also?

That is correct. The 2.5L also incorporates the same two technologies.

If im not mistaken, the 4 cyl engine also has these features. doesnt it?

 

[stefx]

Re: Re: 4 cyl also?

That is correct. The 2.5L also incorporates the same two technologies.

Bryan, I looked at you "ETA Racing" company website.
You guys seemed to be specialized in modding cars.
Do you own a 3.5SE?

 

[1337]

Ahhh I forgot CVCT is constantly variable. Been thinking too much about Hondas. Yes it is probably the intake runners, I have done the free WAI and you can really notice the sound turning aggressive. My bad.

 

[djpeetur]

Re: Is that a Camry?

djpeetur.... is that a Camry?

im afraid so, 94 camry auto i4, im sorry i kno this is altima, but my uncle has altima taht why i ask =)

 

[psteng19]

wow, that's a sweet looking camry (sans wing).
i didn't know kits existed for camry's...

i thought it was a subaru until i saw the headlights, which looked camry-esque.

got anymore pics?