http://www.z1auto.com/prodmore.asp?m...ine&prodid=922

anyone running this or trying this yet? seems liike with the advanced timing and tuning it would give the engine a little more kick throughout the power band

 

I would like to know more about these aswell, Looks like it helps with low end torque. Which would be nice since alot of the NA mods take away low end torque and replace it with top end HP.

Anyone have any input on these??

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This new pulley from NISMO's VTC system on the VQ35DE is designed to increase overall cam advance to 55 degrees (15 degrees longer than stock) for increased engine response and a much faster rise in torque at lower rpm's. Requires professional installation and tuning.

These parts are on a build to order basis from NISMO Japan, please allow up to 90 days for delivery.




NISMO VTC gears VQ35DE $369.00
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Laterz
Aceman

 

Yes there are many parts on that website that I'd love to try but it seems like no one is interested or has tried them yet.

 

most are for teh right handers

 

That sounds neat. Why would a gear be specific to RHD or LHD? If it is, is this gear made for LHD?

 

actually the only parts that are RHD specific are labelled as such

I have a set of these pullies going into my new heads, so we'll report when they are done (still a little ways off though)

adam

 

if they can run on my Z i am interested

 

let us know and let us know about the install. dont think any machining will need to be done, so it basically should be just time consuming.

 

JWt has a set coming out too

 

How much time and Money are we looking at for install and is this something that should be done the same time as replacing your cams??

Not real familar with these, so are we looking at more HP and TQ or just better engine response?

Laterz
Aceman

 

Same question

 

yeah, me three

 

the pullies alters timing in VTC by 15 degrees. should increase engine response and torque and top end hp

 

I posted this in another area of the forum,

Heres what I know, the CVTCS system adjusts the intake cam timing at different RPM making the cams more efficient at those RPMs giving us more power and torque. I thought the system advanced at low RPM and retarded at high RPM, but just did a search on the net and found this on the subject:

"CVTC improves overall engine performance by supplying Constant Valve Timing Control through all operating conditions. The crankshaft position, camshaft position, engine speed, and engine coolant temperature input signals are sent to the ECU. The ECU sends a variable duty cycle to a pulse width modulated solenoid that works like an injector. By adjusting and directing the amount of oil pumped into the CVTC's chambers and allowed to drain back into the engine, the ECU controls the retard or advance of the cam up to 30 crank degrees (vs. 14 degrees on the older VTC motors). The cam is retarded at idle to create a smoother idle and decrease emissions, advanced in the mid range to increase breathing, and retarded at high rpm to increase peak horsepower and fuel efficiency."

There is a NISMO VTC pulley which can advance the timing a further 15 degrees, making torque come on earlier in the rev range. Now what I would like to know is, if you were to use this pulley with a set of performance camshafts which rob low rpm power/torque, would this pulley reduce / remove the losses normally associated with the hi lift / long duration cams?

The cams would still be hi lift / long duration, but by changing the timing of the intake cam you are essentially controling the overlap of the two cams which should be enough to reduce the low rpm effects of the performance cams. Isnt this how we get so much torque at such a low rpm at the moment.

Thoughts, Corrections?

 

hmm

bumpo

 

Been trying to find out as much as i can, lots to read out there



Here are a few articles

http://autozine.kyul.net/technical_s...ine/vvt_31.htm

http://www.madsci.org/posts/archives...0758.Eg.r.html


http://www.obitet.gazi.edu.tr/Ydokuman/vvt2.htm


http://www.bmwworld.com/technology/vanos.htm

http://ghost.engin.umich.edu/vctCON.pdf

So if theses Nismo gears do infact make more power are we then going to lose out in gas Mileage??

So i would assume these gears are smaller then our current set of gears??

Im with Mchapman when i say

( Thoughts, Corrections? )

Laterz
Aceman

 

i think they will improve gas mileage because the low end torque and responsiveness allows you to shift at lower rpms or hold higher speeds at lower rpms.


BUT also there is the fact that more air is being used and therefore more fuel need sto be injected. so It probably won't make enough power to out do the gas mileage effects, just Drive your Z less, J/K

Some one has to test it out, but unfortunately i don't know if they work with the stock heads i think you have to have the nismo RZZ heads.
Then you nee nismo cams (or nismo based cams) and valvestarin and valvesprings. that can become pretty expensive.

 

Some of the mild aftermarket CAMs , already advance intake timing a few degrees. For example JWT S1s advanced intake cam by 2 degrees. I kinda assume these gears just alters the rotation of the intake CAM WRT the Exhaust CAM ? So 15 degrees seems like alot.

 

they work with the stock heads...that much I have been told..and you do not need NISMO cams at all...I will not be running NISMO's on my car (did not have a grind that suited me, and I did not feel like sending them out to be ground)

 

There really isnt enough information available if we dont know exactly what these parts do.

Adam can you try to find out more information on these products your selling?