Plenium spacer??
Plenium spacer??
whats up everyone, i was wondering what is better for the 06 up-rev , is it the 5/16 copper ISO thermal spacer? or the 1/2 inch ISO copper spacer? please let me know asap, thanks guys.
Good point
Good question.
Some of us that have been Z owners for a long time,may see a question
that "everyone should know the answer" as stupid coming from a
newbie.I agree when someone wants an opinion,photo,where to buy info,
it looks like this guy is just lazy.Realistically,the search function is not
easy for everyone.To individuals that are well versed in social media,
this may be hard to believe.Lets cut a little slack to the new guys.
Maybe the rule should be to provide input on that first post.Don't
slam the door.After that,they are on their own.
Some of us that have been Z owners for a long time,may see a question
that "everyone should know the answer" as stupid coming from a
newbie.I agree when someone wants an opinion,photo,where to buy info,
it looks like this guy is just lazy.Realistically,the search function is not
easy for everyone.To individuals that are well versed in social media,
this may be hard to believe.Lets cut a little slack to the new guys.
Maybe the rule should be to provide input on that first post.Don't
slam the door.After that,they are on their own.
it's not even about just searching on this site.. he could have all the answers to his questions by simply searching "plenum spacer my350z" on google. people are just lazy as hell nowadays and don't want to take 5 seconds to help themselves out.
and yes, i'll continue telling newbs to search
and yes, i'll continue telling newbs to search
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From: Lincolnton nc
I thought forums are here to ask questions? If you dont want to answer his question cause youve seen it before then skip it. Didnt ask for just your opinion. Yeah it may be easier just to search it but i dont see the big deal in starting new treads. Obviously he's not sure which is better so he wants help.
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From: Redding CA
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From: east coast
The MREV2 helps. Use the 5/16" spacer with it.
Last edited by RMichael; Nov 16, 2012 at 05:29 PM.
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Joined: Apr 2005
Posts: 2,192
Likes: 2
From: Charleston, WV
fine ill weigh in on this.
Telling people to search for their answers isnt a bad thing.
Attempting to be a smart *** about it, is. Theres nothing cute, funny or helpful about being a jerk.
I always try not to post something I wouldnt say to someone else in real life. If this dude came up to you guys and asked this same question over a beer, Im pretty sure you wouldnt have some smart *** "do a google search" answer. Although Im sure it will be in the conversation somewhere.
Its not what you say, its how you say it.
Most of the "IBTL" "search" and other wise *** gifs, are posted by people trying to show everyone else how clever or funny they are unless your kidding around with someone. Otherwise they wouldnt even respond.
So anyway, just be nice to each other, god knows in this day and age we need to be.
Telling people to search for their answers isnt a bad thing.
Attempting to be a smart *** about it, is. Theres nothing cute, funny or helpful about being a jerk.
I always try not to post something I wouldnt say to someone else in real life. If this dude came up to you guys and asked this same question over a beer, Im pretty sure you wouldnt have some smart *** "do a google search" answer. Although Im sure it will be in the conversation somewhere.
Its not what you say, its how you say it.
Most of the "IBTL" "search" and other wise *** gifs, are posted by people trying to show everyone else how clever or funny they are unless your kidding around with someone. Otherwise they wouldnt even respond.
So anyway, just be nice to each other, god knows in this day and age we need to be.
If only the OP would have just spend 5 minutes and read the TOP 100 FAQ all of this bickering could have been prevented
https://my350z.com/forum/2003-2009-n...questions.html
https://my350z.com/forum/2487452-post8.html
/thread
https://my350z.com/forum/2003-2009-n...questions.html
https://my350z.com/forum/2487452-post8.html
Q: What is a plenum?
A: On the 350z / G35, your plenum is the aluminum intake manifold that sits right in the upper middle of your engine bay. To locate it, find the air intake box, follow the tube to the throttle body, and you will see that the plenum is connected to the throttle body. The plenum consists of both the "upper plenum" which you can see plainly in your engine bay, and a "lower plenum" which is not visible in your engine bay. You cannot see it because your lower plenum sits beneath the "upper plenum". If you remove your upper plenum to install a spacer for example, you will see the "lower plenum," also known as a "lower collector". The lower plenum consists of 6 tubes or "runners" that guide the air from your plenum into each cylinder. They may not look that fancy, but in fact, the precise length of these tubes has a significant impact on horsepower and torque.
Q: What is a plenum spacer?
A: Several companies make a "spacer" which rests between your lower plenum and upper plenum, to increase plenum volume and reduce restriction from within the plenum. For example, Motordyne engineering's 5/16" spacer, or AAM's angled spacer. Increasing plenum volume typically has the effect of increasing horsepower. However, if you increase the volume too much, you will start to lose throttle response. Plenum design is a crucial aspect of engine design -- companies that make spacers are simply trying to get the most function out of the plenum.
Q: What is better, a plenum spacer, or a complete aftermarket plenum?
A: Some people swear by aftermarket plenums (i.e. crawford, kinetix), but for all intents and purposes, they accomplish the same exact thing as adding a spacer. So most people would tell you to choose whichever one is cheapest, which is usually the spacer.
Q: What is the difference between the REV-UP (300hp) and the NON-REVUP (287hp) Motor? Which one do I have?
A: Rev-up Motor has higher peak HP, lower peak torque, and a higher redline (7000RPM)
Non-rev-up Motor has lower peak HP, higher peak torque, and a lower redline (6600RPM)
Rev-Up Motor has variable Intake and Exhaust timing.
Non-Revup Motor ONLY has variable Intake timing.
You can tell which one you have by looking at your redline on your tachometer.
Q: What is a MREV, and MREV2? Which one do I need for my rev-up (300hp) or non-rev-up 287hp motor?
For 2003 - 2006 350Z's / G35's, Nissan has designed two different types of lower collector:
REV-UP lower collector from the 300hp motor = shorter runners which are tuned for lower peak torque, but higher peak horsepower.
NON-REV-UP lower collector from the 287hp motor = longer runners which are tuned for higher peak torque, but lower peak horsepower.
MREV = same exact thing as the non-rev-up lower collector, but Motordyne Enginering has given it a name.
MREV2 = Using the MREV as a starting material, this is a CUSTOM lower plenum that is sold by Motordyne Engineering. It has been precisely machined to remove aluminum from critical locations on the MREV. In other words, it is like a much improved version of the MREV which reduces restriction and improves HP / TQ.
If you have a non-revup motor (6600RPM redline), your best bang for your buck is to get the 5/16" spacer. The 5/16" spacer makes the most HP for the money. OR, you may choose to get the MREV2. By replacing your stock lower collector (MREV) with this better flowing version, you will make better "area under the curve" on the dyno in terms of HP gain. My opinion is that you should choose one or the other -- either MREV2 OR 5/16" spacer. If you get both, the HP gain will exhibit "diminishing returns", meaning you will spend a lot more money to make not much extra HP. So, usually the recommended option for the non-revup guys is to get the 5/16" spacer.
If you are a rev-up owner (7000RPM redline), you will basically only benefit from getting BOTH a 5/16" spacer and the MREV2. If you get the MREV2 only, your mid-range torque will increase but your maximum HP will drop off severely. If you only get the 5/16" spacer, you will not see a benefit. Several dynos have proven that for the rev-up motor, you basically need both the spacer and the MREV2, which will make a lot of midrange torque, without sacrificing too much peak HP.
For more information, search through the Intake Exhaust forum and read several old threads on the subject matter.
A: On the 350z / G35, your plenum is the aluminum intake manifold that sits right in the upper middle of your engine bay. To locate it, find the air intake box, follow the tube to the throttle body, and you will see that the plenum is connected to the throttle body. The plenum consists of both the "upper plenum" which you can see plainly in your engine bay, and a "lower plenum" which is not visible in your engine bay. You cannot see it because your lower plenum sits beneath the "upper plenum". If you remove your upper plenum to install a spacer for example, you will see the "lower plenum," also known as a "lower collector". The lower plenum consists of 6 tubes or "runners" that guide the air from your plenum into each cylinder. They may not look that fancy, but in fact, the precise length of these tubes has a significant impact on horsepower and torque.
Q: What is a plenum spacer?
A: Several companies make a "spacer" which rests between your lower plenum and upper plenum, to increase plenum volume and reduce restriction from within the plenum. For example, Motordyne engineering's 5/16" spacer, or AAM's angled spacer. Increasing plenum volume typically has the effect of increasing horsepower. However, if you increase the volume too much, you will start to lose throttle response. Plenum design is a crucial aspect of engine design -- companies that make spacers are simply trying to get the most function out of the plenum.
Q: What is better, a plenum spacer, or a complete aftermarket plenum?
A: Some people swear by aftermarket plenums (i.e. crawford, kinetix), but for all intents and purposes, they accomplish the same exact thing as adding a spacer. So most people would tell you to choose whichever one is cheapest, which is usually the spacer.
Q: What is the difference between the REV-UP (300hp) and the NON-REVUP (287hp) Motor? Which one do I have?
A: Rev-up Motor has higher peak HP, lower peak torque, and a higher redline (7000RPM)
Non-rev-up Motor has lower peak HP, higher peak torque, and a lower redline (6600RPM)
Rev-Up Motor has variable Intake and Exhaust timing.
Non-Revup Motor ONLY has variable Intake timing.
You can tell which one you have by looking at your redline on your tachometer.
Q: What is a MREV, and MREV2? Which one do I need for my rev-up (300hp) or non-rev-up 287hp motor?
For 2003 - 2006 350Z's / G35's, Nissan has designed two different types of lower collector:
REV-UP lower collector from the 300hp motor = shorter runners which are tuned for lower peak torque, but higher peak horsepower.
NON-REV-UP lower collector from the 287hp motor = longer runners which are tuned for higher peak torque, but lower peak horsepower.
MREV = same exact thing as the non-rev-up lower collector, but Motordyne Enginering has given it a name.
MREV2 = Using the MREV as a starting material, this is a CUSTOM lower plenum that is sold by Motordyne Engineering. It has been precisely machined to remove aluminum from critical locations on the MREV. In other words, it is like a much improved version of the MREV which reduces restriction and improves HP / TQ.
If you have a non-revup motor (6600RPM redline), your best bang for your buck is to get the 5/16" spacer. The 5/16" spacer makes the most HP for the money. OR, you may choose to get the MREV2. By replacing your stock lower collector (MREV) with this better flowing version, you will make better "area under the curve" on the dyno in terms of HP gain. My opinion is that you should choose one or the other -- either MREV2 OR 5/16" spacer. If you get both, the HP gain will exhibit "diminishing returns", meaning you will spend a lot more money to make not much extra HP. So, usually the recommended option for the non-revup guys is to get the 5/16" spacer.
If you are a rev-up owner (7000RPM redline), you will basically only benefit from getting BOTH a 5/16" spacer and the MREV2. If you get the MREV2 only, your mid-range torque will increase but your maximum HP will drop off severely. If you only get the 5/16" spacer, you will not see a benefit. Several dynos have proven that for the rev-up motor, you basically need both the spacer and the MREV2, which will make a lot of midrange torque, without sacrificing too much peak HP.
For more information, search through the Intake Exhaust forum and read several old threads on the subject matter.
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