So, everyone knows that there is a new secret mod that is suppose to add power to the new Rev-up motor. Doug called me one day and wanted to borrow my car because he had a hunch on what it was. As you know the Rev-up motor comes with shorter intake runners in the lower plenum, then the 287hp motor to help with the top end pull and becuase of this it sacrifices some low-mid range power. Doug figured that I would gain some good midrange, but would lose some top end. We were hoping that maybe the Crawford plenum I had would help negate the top end lose. He just didn't know how much I would lose or gain, so he installed it and went to the dyno. We also decided to try out the Crawford TB to see if it would help gain some top end power back when using the 287hp lower plenum. Here are the results:

Green = setup in sig
Red = setup in sig + 287hp lower plenum
blue = setup in sig + 287hp lower plenum + Crawford 73mm Throttle body

http://community.webshots.com/photo/...5582695GiVRUT#

The car feels a lot better in the mid-range, but you can definately feel the topend lose also. So it comes down to being a trade off to if you want more mid-range or more top end. I will probably switch back to the Rev-up lower plenum becuase on track days and when I race, I am more in the higher rpms then the mid.

 

^^^^^^^^^^^^^^^^^

Yup...

IMHO great for the daily driver who wants the power in the low / mid...

For track runners who make use of the higher RPM power I still like the REV UP manifold... Especially if you do some tuning work that REV UP plenum is capable of making even more power in the high RPM's...

The cheapest way to go would be the manifold & spacer to make up for the top end (but wont recover it all)... Best thing to do will be to change your shift point to a lower RPM... but then you dont make overall as much peak HP, but more in the acceleration band...

The way the REV UP motor makes power... It makes the constant peak HP for almost 1000 RPM... With some tuning and ECU I think this power will keep climbing...

 

yeah but the green line actually seems to pull evenly thoughout its powerband and have a flatter toque powerband. Minimal gains, very nice though. So this is mod for the 287 motor not REV up

 

The mod I did comes stock on the 287 motors.... I am taking it off and putting my original part on.

 

the mod we are talking about... you have turned around... the mod is for the REV UP, useless on the 287

 

ive been gone for a while...why do u call it the rev up moter?

 

REV-UP motor = 300HP 350Z or 298HP G35 motor... 7000 RPM red line... Variable Exhaust timing...

www.performancenissanparts.com search "2005 Track" and you will see all the updated parts in the 2006 MT or 2005 35th Anniversary motors...

 

and you have MY post as your signature for stupid?...even though everyone but you who reads it knows what I was talking about.

 

what? ^^^

 

Awesome...

Its hard to imagine how an "independant dyno" can get any more independant than a competitor doing the verification.

Is the electronic data available for your dyno pulls?

If it is, I could run an analysis on HP and TQ area under the curve for each RMP gear shift range and post your results. Overall, it looks like you gained a significant increase in area under the HP curve. Along with a massive increase increase in area under the TQ curve.

Before you remove the 287 plenum, try switching out lower collectors while at the track (between heats) and see how it changes the feel of driving, responsiveness and lap times. IMO the added torque will get you out of the corners quite a bit faster and end up giving you better times.

Thanks,
Tony

 

Another thing I forgot to mention is that it seemed the 287hp lower plenum helped to lean the A/F out. So, maybe that power can be had with the Rev-up lower plenum and all you need is a good tune.

 

I found the same effect, but there didn't seem to be a correlation between the change in power Vs the change in A/F.

A/F was unghanged where MREV was making significant power and it wasn't until about 6K RPM when it started to run leaner... on one of the cars I tested, 11.5 A/F increased to about 12.5 at redline. And where it was making about 18HP at 4300 RPM, the A/F was completely unchanged.

It could be said that running leaner corresponded to the decrease in power near redline, but going from 11.5 to 12.5 seems like a change in the right direction.

I also saw a few other test vehicles where A/F could go up or down slightly. All in all, it leaves the impression that A/F is a second order effect to simply tuning the runners to a lower frequency.

 

Yeah, we found basiclly the same thing. We know that the longer runners is the reason for the added torque, but maybe some experimental tuning could help regain some of the top end.

 

So what would happen if you swap the 300hp lower intake plenum onto a 287hp engine???
Any thoughts... would it just shift the power band up higher?

Absubtle
PA

 

So it looks like the 73MM throttle body lost all kinds of power except for the very top end

 

No, the 73MM throttle body gained everywhere (blue run = sig + TB + 287hp lower plenum). The only reason it didnt gain in the topend on that dyno is because I tested it with the 287hp lower plenum and the 287hp lower plenum kills the topend. I wanted to do a run with my factory lower plenum and the throttle body, but it would have taken to long for me swap out the lower plenum on the dyno.