civic4982

iTrader: (9)

Anyone have the combination listed up in the title?

I've been searching for a couple days now and haven't been able to find a thread with dynos for a stock OEM non-revup lower collector installed on a revup motor with and/or without the 5/16" spacer or another plenum style mod.

As far as I understand the MREV2 is a 287HP lower collector + machining done on runners 1 and 2. Was wondering if the machining was a tremendous gain or not b/c I could just use the lower plenum and save some mad $$$ for now since they're floating around used everywhere. Taking it somewhere to get it machined a few millimeters in the right spots that appear restrictive may not be too much of an inconvenience.

Thanks.

hershell

iTrader: (5)

I received my MREV2 and spacer today . I think I'm going to have my old lower plenum milled ported and polished and see what it does. It seem like if everthing was ported and polished it would help the air flow a lot more. it may be to much air flow.

civic4982

iTrader: (9)

^ well I think your old lower plenum is a REVUP one so it's not quite the data I'm in search of.

I'm trying to find someone who put a MREV original (i.e. 287HP nonrevup lower collector) on a REVUP motor like yours is.

skaterbasist

iTrader: (3)

Huh?

For the rev-up, the best possible combination is the MREV2 + Spacer.

The MREV2 is just a modified non-revup lower plenum that works very well with the revup engine.

Nothing else to it.


.

civic4982

iTrader: (9)

I suppose I didn't make it clear.

I'm trying to find dynos for a revup motors w/ an unmodified non-revup lower plenum.

w/ or w/out 5/16" spacer is fine. Just really trying to see whta can be gained by just using the unmodified lower plenum with a 5/16" spacer on a REVUP.

RebelinRI

iTrader: (22)

Ask Tony. He probably has the #'s for the stock non revup and worked from there, as far as milling goes. I would guess he came to a point where he milled too far. But your best bet is to ask Tony because I've never heard or seen anyones post like the combo you'd like to see. GL

Wired 24/7

iTrader: (2)

It's been done (used to be called MREV), and it lost too much peak HP, which is why the MREV2 is now the standard. The MREV2 + 5/16" spacer barely loses any HP on the top end while it makes a lot of HP and torque in the midrange.

You can ask Tony (Hydrazine) but he'll tell you exactly the same thing.

By the way, the MREV2 is not just machined on runners 1 and 2, I believe it's machined in 2 other places as well...

rpm06g35

iTrader: (2)

look up the post about new custom plenum its all in there later bro mike

World Famous Z

iTrader: (42)

The better combination for the rev up guys out there is to use the MREV2 (modified lower collector from older 287hp engine), along with a spacer.

If you cannot afford the MREV2, then using the spacer AND a factory lower collector from the 287 hp non-rev-up engine will work well too.

You'll notice a big difference with EITHER of these two methods, not everyone can afford the MREV2.... The MREV2 does work, and works well, but it's just the end user's budget in the end. you won't gain as much from just a lower plenum + spacer swap as with the MREV2 but you can still notice a GOOD Gain by this combo too...

civic4982

iTrader: (9)

Thanks I was just really hoping for a dyno of some sort showing what I might expect to gain from it.

civic4982

iTrader: (9)

you are correct sir, my mistake.
I believe it's runner 5 and the corner of runner 6 as well as some other good quality work that they do.

cdoxp800

iTrader: (12)

I found this. I can not remember where. If I recall it was on a 06 with a Pop Charger and Nismo Cat Back.

There is a before an after on it

Chad

civic4982

iTrader: (9)

could you point me towards the thread so I can read more? thnaks

Hydrazine

iTrader: (53)

Civic4982,

+1 to Wired24/7.

What you are proposing was the first generation MREV kit. Then there was MREV+ and now it is MREV2.

I found that additional gains can be made by modifying the lower manifold.

Tony

civic4982

iTrader: (9)

thanks.

I was trying to find the deltas when using a 5/16" spacer b/t the MREV and the MREV2. Just having difficulty searching out the dynos that might show the band differences.

much appreciated.

cdoxp800

iTrader: (12)

Hey, civic4982

Here is your Link

Hope this works. Click here

Hydrazine

iTrader: (53)

There are independant comparative dynos posted here. You'll have to search to find them though.

mrev vs mrev+

and

mrev+ vs mrev2

civic4982

iTrader: (9)

https://my350z.com/forum/showthread....rev+vs+mrev%2B^ I found the MREV+ vs. MREV2

but not the MREV vs. MREV+ on a REVUP motor.

anyone else found it yet?

civic4982

iTrader: (9)

bump still trying to find MREV vs. MREV+ on REVUP motor comparison

civic4982

iTrader: (9)

so update on this old thread:

I recently discovered the import tuner magazine special on the MREV2 and the 5/16" spacer seperately.

http://www.importtuner.com/tech/powe.../photo_14.html

Now I was looking at this dyno chart and it seems that with just the MREV2 the TQ and HP values cross the baseline and dip below it from 6200 or so RPM to the revlimiter. They were able to make the lines intersect at a higher point when using it in combination with the 5/16" iso thermal spacer. With the MREV2 in combination with the 5/16" spacer there was also a cross over to the power and tq loss sides after 6400RPM or so all the way up to redline.

Has anyone been able to figure out a way to make this cross a little higher up in the RPM range?

With this power drop being noticed would it be more reasonable then to be shifting at the range where power begins to drop significantly (dHP/dt and dtorque/dt) ???