I agree with you.

I have a 2003 "G" 6MT Coupe.

Mods:
TechnoSquare Crawford Reflash ECU
JWT PopCharger with "Z" Tube
Crawford V4 Plenum
Crawford HiFlow Cats
Crawford Headers
Invidia G200 Dual Exhaust with "H" Pipe
Ground Wires

I dynoed along with a 2005 "G" with the RevUp motor. With no mods, he dynoed at 242 HP. We then added a Motordyne spacer and ran another. He is the red line, I'm the blue. You can see I pull him all the way till about 6300 RPM, where the lines cross. Above that I fall off, and he flat lines until redline. The red line on my reflashed ECU is now 7100.

Lou

 

When was the last time you were road racing someone from 2800-5000 RPM?

In a drag race, sure it might make a difference for the launch, but the wheels will spin anyway...

As I said before... The UPper Plenum makes its horse power above the stock REV LIMITER...

On a car with the rev-limiter made higher, it will be a different story...

In a race, you will be shifting from 5200-7200 RPM... Higher if you have a built motor... Our race cars go up to 7700 RPM as will mine soon...

The Super Taiku lower plenum has even shorter intake runners and is made for peak hp at around 8500 RPM...

These parts are more for HIGH RPM horse power...

On the street, you worry about lower RPM torque for passing...

 

And i'm sure cams would make an even bigger difference at higher rpms? i'd have to agree w/ jason on this one.

 

Depending on the cams yes...

The NISMO R-Tune cams are made to make most of its power across the RPM range but mostly in the Mid range...

The JWT Cams do a simliar thing to the install of this lower plenum.. You loose Low End power but up top in the higher RPM's they Scream!

 

2800-5000? You wrong, the regular plenum owns the 300hp plenum up until 6200 rpm's. So really even if you have a rev limit raised to 7100 your out pulling a Z by 900 rpm's all of which happen up top. Id rather out pull somebody from 4000-6200 then from 6200-7100. The wheels will spin anyway? Not if you know how to launch. IMO that plenum on a 287model Z is worthless, most wont runs cams and possibly valvetrain to be able to rev the Z high enough to maximise its potential. Im sure it does much better on the 300hp with i/e valve timing, but for us you cannot be serious in thinking it is useful for any kind of driving be it on the street, drag strip, or road course-where the added torque of the regular plenum will help get you out of corners better. If I was you trying to sell those to Z owners with regular plenums I wouldnt have posted it....

 

Jason, the Rev-Up cams actually will work in the non-Rev motors, that is what we will be using in our T2 race motor. Because the Exhaust cams have CVVT on the Rev-Up motor, the ends of the exhaust cams need to be machined to fit the non-rev motor, but its not a real big deal.

Where are you getting information on the parts used in the Super Taikyu cars?

 

Im not talking about for a drag race...

Yes the 287 HP plenum is better for low end / mid range acceleration..

The way I drive when I race my car... I dont spend much time in the lower RPM's...

The big difference is is the car pulls hard all the way up to red-line (weither its stock or raised up to even 7700 RPM with the lower plenum on the 287 motor.. The car feels alseep about 5500 RPM when you put the 287 plenum back on... If you are in the High RPM's alot, (like when road racing) it makes a difference...

 

How are those cams in the other motor?

I didnt think about using them in the 287 motor as an option..

Since you have to machine something off that just verify's that non-revup cams can not be used in the Rev-Up motors...

A certain race team we work with alot...

 

How can the car feel asleep to 5500 rpm's when the regular plenum makes more power to 6200 rpm's? I think most people that have swapped "feel" a big top-end difference because their low end and mid range suffer and then from 6200rpm's to 6600 or 7100 if they have the reflash it pulls harder, giving them a sense of "wow it pulls so hard", in reality its only pulling harder a few hundred rpm over the regular plenum. And the difference pulling harder 400 rpm's over stock redline wont make up the difference lost from 2800 up to 6200 in a drag race or on a road course I dont agree with what your saying. Dyno tells the story....

 

Jason, the exhaust cams for Revup are different in that the end of the cam is set up to have the CVVT gear on them (just like the intake cam). From what I understand the cam is slightly longer so to fit the non-rev head, the end just needs machined off so that its the same length as the standard cam. Fairly easy job at a competent machine shop.

Dont want to get in the middle of this debate on the lower plenum, but I do know that to take full advantage of the plenum on the non-rev motors, you really need the Rev-up cams. Several other T2 racers have installed the lower plenum on the non-rev motors (but without the cams) and did not see any noticable difference on lap times or driveability.

Do you have a source for Super Taikyu spec parts?

 

Im going to check out the REV-UP cams... I can get them machined no problem...

In T2 you are stuck using OEM parts correct?

I have some customers who have put together the REV-UP plenum with the JWT cams and are very happy... Those are the cams I was planning on my motor...

The REV-UP cams arent very expensive at all!

http://www.performancenissanparts.co...&Submit=Search

 

Jason, unfortunately we have to stick with OEM parts except when we are allowed "competition adjustments" to the car (ie: T2 suspension kit). The Rev-Up cams are cheap, we can get them from Nissan Competition for about $450 for the set of four. Hopefully I can get the budget over the winter to put together a 2004/06 "Frankenstein" motor with the 06 cams, plenum etc with the 04 block/heads and electronics along with a good B&B job. I need to find out from Nissan Comp if the 06 rods will work on the 04 crank, if so will put those on too and have Technosquare reprogram my ECU for the changes and hopefully a safe 7800rpm.

Of course if we were allowed to do anything we would be putting in some Nismo S2's....

 

Our race cars ran up to 7800 RPM with the 287 HP rods with no issues...

The REV-UP rods will probably work on the 04 crank since they use the same bearings but... they might hold you back from higher RPM's... They are a little bit heavier then the 287HP rods...

Our race team uses the NISMO Connecting rod bolts with the 287 Rods...

But I wonder if that would be legal in T2... They pretty much look the same as stock with no markings on them...

Let me know if there is anything I can help you with parts wize...

Im not sure what Nissan Comp can do for you...

 

Jason I think you should race alberto and show him how the lower plenum really works on the 287hp motor.

 

as soon as I get my Z out of the body shop again...

:-/

 

Lol what u doing this time?

 

BTW how do u get the rev limit to 7700 rpm I was gonna get a reflash and I thought it goes only to 7100rpm. Is 7700 too high for the stock motor or are u changing ur internals?

 

car was parked out front of dealer... some drunk guy side swipped my car and another employee car...

there was a witness... got plate number...

caught the guy

 

Nice

 

YOu can do 7700 if you change the connecting rod bolts... which is what im planning on doing... eventually...