the only difference between a stock 287hp lower part of the plenum and the mrev 2 is that the mrev 2 is a "Standard lower collector with modified Intake Runners for reduced pressure drop "


"If you already have a spacer, all you need to do is modify the lower collector and it will make more torque and more horse power! In addition to area under the curve, it will kick up the peak HP by about 4-5 HP."

modify the lower collector in which way?

 

Go and read the 350Z threads it will tell you all you need to know. You modify it by sending it to Motordyne paying them money and getting back a modified lower collector like I did.

Actually they are milling the front runners down like in the MREV+ and now they are doing additional milling which gives additional HP in the MREV++ or as it is now called the MREV-2.

 

Jime, when you get your MREV++, take some pics of it for us. I'd like to see the additional machining.

 

Will do Jeff, I know people were asked at first not to post pics but I haven't been told anything in that regard. I should have my upper back on Thurs too from the welder so will try and post both.

 

Here are the pics of my upper 350Z plenum with the TB flange welded to plenum with elbow removed.
I have some dremeling to do but basically he did a pretty good job, won't take much to smooth it out on the inside.

 

^^^ Looks good!!!

 

not really.

 

Thats looks pretty good, its really hard to weld cast aluminum.

 

Not bad, not bad at all. Nice tig welding. A little clean up a little polishing and it will look stock

 

MREV 2 pics. Brand new lower was returned with 5/16" spacer and latest MREV.

It appears some additional machining was done on the inside of all 6 runners plus what you can see here.

Its also brand new vs the old one I sent them.

Fairly substantial weight difference too. Upper and lower 350Z = 19 lbs vs 13 lbs for the Maxima.

 

The guy that welded this is a Master welder with 30 years experience who also welds high pressure for the federal govt so I don't think I would pass judgement on his work. TIG welding cast aluminum is a very difficult task.

 

LOL @ somone judging alumunum welds who's never even operated a mig welder.

 

Jime thanks! I wonder what those 6 little grind spots are on each runner? I see the usual MREV+ machining but where is the additional machining on each runner? Visible on the underside of the manifold?

 

I should have taken a picture of the old one before I sent it in. Not sure if those grind spots were there or not. The work in the runner is very difficult to get a picture of but it looks like he either made them a bit larger or maybe just made them all equal. Its on visible on the underside at all just on the inlet to about where it starts to curve.

 

Those are I believe from the molding:

 

you get it installed yet? also you have the 5/16th spacer. any pics of that?

 

Its installed with the MREV-2 and 5/16" spacer and the hood closes. I will snap a couple of pics tomorrow.

The hardest part was the throttle cable, but once I figured that out it was very simple to do. I will snap a pic of that too. I started to polish the upper plenum but couldn't wait to install so it will have to wait for winter. Its shiny but rough.

 

Very nice how you ran the TB cable. You need to produce. Have a group deal for like 5 people and they will buy. I put myself on the list first....(LOL)

 

Nice!! I have no idea how you fit the plenum, plus a spacer under there and closing the hood...

 

In addition, for those that were wondering about the gains on the IM in this link:

http://chicagoz.com/v-web/bulletin/b...r=asc&start=45

If you read at the bottom where I posted, they are saying this will only beneficial to cars trying to push 500 or more whp. So I guess I will be moving towards the 350z IM.

 

Jime, i see that your running the breather filter on the front valve cover....you haven't had any problems with it? Most people say it messes up your car...rough idle, misfiring, etc...just wondering

how much did you get it for btw?

 

I was running a breather for quite some time.. No probs with it.