Are the first two do it yoursel plenum mods?? Or is that what you recieved from Motordyne?

 

The other two are NOT DIY, they are pictures of the MREV+ (or whatever the f*ck it is called) lower 287 manifold after undergoing the MMP process by motordyne. I'm not very pleased with it as it looks nothing like the advertised manifold, even after I put about $15 in materials and 2 hours of work into it. I'm still awaiting a response from Motordyne.

ps- Please don't state things as facts unless you know what you are talking about.

 

No offense, but your 1st post with teh pics was quite ambiguous about what was in the 1st two pics. You stated "your" and "my" lower plenum, not Motordyne's or the MREV+. I think that was the reason for some of the confusion.

 

Why the hell would I come into this thread and complain that a DIY manifold didn't look like the one on someone's website? Anyways, I went back and edited the original post in case there was any conphusssione.

And no offense taken or intended, I'm just a bit upset that what I spent a large amount of money on something that looks nothing like what it is advertised. I expect a BigMac to not look like the picture, but a $250+ car part should.

 

Wren57's pics and original post made sense to me - oh well...........keep us filled in on what you learn. Definitely not looking right there....

 

WOW, I get it now. You bought MD's Lower Plenum, originally called MREV+. Came to you looking like crap and nothing like the pictures on their site.

And they didn't even get back with you about that? did they shipped out the wrong one, as in unfinished product?


How about other MREV owners? Did you start a NEW thread and asked them if they're experiencing the same?

 

Where is this "GROUP BUY" guys, I want to sign in for it. Please let me know immediately before it gets to late. Thanks very much ppl.

 

Now the website in not working. All the orders must be clogging up the
works. Christmas is going to have to wait just a little longer.

Ok, site back up now.

 

See Post #477 (on page 24 for me)

 

Looks like a great deal of difference. Will this affect performance? I will find out, order #101. Thanks Tony.

 

WREN57,

What you have attached on the third picture to the right is not an MREV of any kind.
That's alberts (EK's) collector. You can see his pictures posted here.
https://my350z.com/forum/engine-drivetrain-and-forced-induction-diy/187392-diy-plenum-porting-3.html

What you posted is a picture from the PDF installation manual. Which definitly should not be construed as an advertisement. The picture was taken during an install for illustration purposes over a year ago. Alberts plenum is only polished. (not machined in any way like an MREV)

I'm sure there are many, many people on this board who have seen and can vouch that same picture has been in the manual since the very beginning of Motordyne plenum spacers and long before MREV was developed.

Sorry if you thought that polished plenum was in any way supposed to be an MREV. It is not.

But I see the problem now and will put in a new picture ASAP.

PS: In fact, Albert was the first person to do an independant dyno comparison of a early Crawford plenum (the polished CV4 shown shown in EK's attached pictures) and the MD 1/4" plenum spacer.
Both pre/post tests were performed on that polished lower plenum. Hence many pictures were taken during the installation process for documentation... the picture you posted was one of them.

PSS: What you recieved is exactly what Wired 24/7's dyno plots were made from. All the same machining, grinding and buffing processes are the same. So what you have is functionally identical.

 

MREV+ was the modified lower plenum with a plenum spacer. MREV-2 has additional lower plenum modifications but no longer comes with a spacer.

The modified lower plenum has been purposly separated from automatically comming with a plenum spacer. The reason is that many will want the gains of a modified lower collector on their 287 engine but not want to install a plenum spacer.

MREV-2 is the first 100% stealth plenum mod and thus will have certaint advantageous traits for some people. In the case of the REVUP engine, all prior dynos of MREV+ have been with a plenum spacer.

When the whole MREV concept started, the very first dyno on a REVUP engine was the 287 lower collector without a spacer. The results were similar to MREV-2 in that it made very good midrange gains, but the loss up top was also too much. With the plenum spacer added, it was much better but it still lost around 2-5 horse power in the last 600 RPM.
When the MREV+ was developed, the last end of the RPM spectrum was brought up to to baseline value.

The new changes made to MREV-2 increase flow area to the entrance of the runner inlets even more than before.

I am also offering a $100 rebate (for a limited time) for dyno installations of the MREV-2 with a spacer on the REVUP engine.

If you have REVUP engine, you can dyno it or you can wait for others to post their results here first.

Tony

 

Hi Grommit,

Yes, thats no problem at all.

 

From all the results so far, the MREV-2 mod tends to make more TQ and the spacer by itself tends to make more HP.

If you only go with one, the MREV-2 and 5/16" spacer are a close call but the MREV-2 makes a little more and also costs less.

Its also 100% stealth which is a nice feature to have.

 

hydrazine, im sorry for the dumb question but i dont want to go crazy looking through this whole thread for whp & tq gains with the mrev2 and 5/16 spacer on a 287vq motor. can you enlighten me? thanks

 

Right here.
https://my350z.com/forum/intake-exhaust/188419-mrev-v2-independent-dyno-tested-on-bone-stock-287hp-motor-wired-24-7-s-05-touring.html

 

Quote:
Originally Posted by bilinghm
I'm curious what the guys who have purchased the Mrev+ think of this home made version. You guys have seen the design and workmanship of the top secret Mrev+, so how do they compare? I believe everyone following this thread would love some insights from you guys. Comments please.

From Hydrazine:

Getting closer!
That was an early version of MREV+.

There is still a ways to go.

Hint: Thinking out of the box can also mean thinking out of (or beyond one) dimension or axis.
__________________
http://www.MotordyneEngineering.com

I think you got some 'splaining to do Lucy. I don't think my DIY looks like an early version of THAT sad looking plenum. I think it's about time you cut the secrecy B.S. and show these people what the product that they are going to recieve actually looks like.

 

Where do I drop off and pick up my new one? I have to pay cash, too. Let me know if that will be a problem.

 

Yes, there is indeed more to the MREV-2. But by just looking at your attached picture, you "may" have removed a little too much off the top of runners 1&2.

EDIT: I'll release pictures when appropriate. The bottom line is that it makes the gains as shown in the dyno plots.

 

Give me a PM.