Did all VE5s come with the VI or did the early models come without? I ask because I have a 92 VE5 that does not the VI. The numbers match for a factory 5sp, it just not have the power valve or the solenoid for activating it.

 

my 92 VE5 has all the aforementioned gagetry... i kinda thought it was necessary... does yours work alright?

 

maybe your motor has been replaced?

 

As far as I know everything works fine. I was just wondering because everything seems original. I can't even find a harness plug for the power valve solenoid to make me think that the original plenum was replaced with the auto version.

I have thought that as well, just wondering if there is anything other than the obvious that I can look for to determine if it ever had the VI.

 

pics would be helpful.

I have never seen a factory 5-speed without the VI and I have owned two cars and seen many, many more

 

Pics of the vi thing just in case someone doesn't know what were talking about...

 

All USDM VE30DE manual transmission based cars have a Power Valve/Variable Intake

 

Is there a number on the engine that I can use to determine if the engine have been swapped?

 

the vg doesn't have anything like that does it?

 

IIRC the vg with a 5 speed has the variable intake also...I may be wrong though...awsm66 will or jeffy will correct me if i'm wrong...

 

I wish.

Wonder how hard is it is to convert it? Or if its possible. hmmm...

~Alex

 

all vgs auto and 5spd have VI

to convert you would need to find out if you have the plug for the vi its under the TB somwhere

 

Well i knew someone would correct me...

 

What where? I have manifolds from an 89SE and 2 90se's and some junkyard VG.

none look like they have VI. only moving part other then the iac and butterflys is the 2 valves (looks like the TB only smaller) and i thought that was the PCV

~Alex

 

those 2 butterflys are the VI they have and vacume acuator just like the VE on the drivers side middle

 

how does that really change the intake charge? Im sure its benifical sharing the sides of the intake, but Im talking real verible intakes that have 2 runners for a drasic change in charge velocity.

Ive seen that and all its done is given me an idea, which is to take out that entire dividing wall. I do have 3 VG intakes man, and plenty more in the local junkyards

~Alex

 

I have a 92 with the VE30DE engine and it didn´t have the VI and it is a 5sp

 

The vacuum line to the power valve has a metal pipe running from the solenoid, across the back of the engine, to a rubber vacuum line to the PV dashpot. This metal line is ganged to the metal line going to the PCV valve going across the back of the engine, about valve cover level. If your PCV valve metal line has an extra line attached to it, the engine may have started with a Power Valve.

 

Maybe the engine was replaced? The most common engine is the auto version. And not every mechanic knows the auto/manual intakes are different.

If this is the case, the mechanic probably didn't know enough to swap the manifolds over.

 

I have a 94 maxima gxe. automatic and i am postive i got one of those. when i was taking apart the manifold to do the injecters i saw it

 

VG = all have them
VE = only 5sps have them

 

Find the Vechical Identification Plate, which is located on the firewall of car, and locate the Model Variation Code

If the car is an SE you have 6 options

ELJ30GFEU - 5 speed manual transmission - Non-California car
ELJ30GFEV - 5 speed manual transmission - California car
ELJ30GFEN - 5 speed manual transmission - Canada car
ELJ30GAEU - 4 speed automatic transmission - Non-California car
ELJ30GAEV - 4 speed automatic transmission - California car
ELJ30GAEN - 4 speed automatic transmission - Canada car

7th character denotes transmission type:
- F = 5spd Manual
- A = 4spd Automatic

9th character denotes the cars destination:
- U = Non-California, US
- V = California, US
- N = Canada

 

what does the VI do, in terms of performance?

 

I believe it gives you more low end torque...Jeff and Shawn will correct me if I am wrong because I know they have talked about it before.

 

The problem with this is, you need to find the code on the engine, not the firewall. If an engine has been replaced (highly likely on a VE 5-speed with no VI), like you said before, it was probably replaced with an engine out of an AT car. When I get bored, maybe I can look on my old block and try to find a code somewhere on it.

Good thing my mechanic knew enough to swap manifolds

 

Which mechanic?

 

The only one that swapped manifold on my car -- that would be joo.

 

Bah..Jeff can't fix a bologna sandwich...

 

Shhhh......

 

The VI intakes basically have two sets of runners for the heads.

At lower RPMs the door in the upper manifold is positioned to close off the shorter, wider of the runners, leaving the heads to feed off of the longer, somewhat skinnier of the set.
Because of the lower RPMs the velocity of the air entering the combustion chamber from the longer of the runners is sufficient enough to supply the chamber with the proper charg of air needed for maximum cumbustion performance, and intern is better for more low end power.

When the engine reaches a higher RPM (or lower vacuum, because the valve is vacuum controlled), the door closes off the longer of the runners, leaving the combustion chambers to feed off of the shorter, fatter of the runners. The shorter, fatter runners provide a quicker, more direct, efficient charge of air to enter the chamber during the shorter amount of time that the valve is open during higher RPM. This intern leads to better top end performance.

 

top of the block, on the end. Engraved


if it's a factory 5spd it should have a green connector. worst comes to worst check the ECU end of the harness and see if it has the wire. If not, someone's done some wierd stuff lol.

 

My car was swapped to 5 speed 2 years ago, and i still never hooked up the VI, so yea i have a VI but its just for bling

 

You had an auto and swapped the 5 sp? Cool. But wouldn't you still have the auto ecu and auto intake manifold?

I have an extra 5sp manifold and ecu. The manifold is still on my spare motor but I think it's only good for parts now.

 

IIRC he threw the 5spd manifold on when he built his motor