Aluminum intake for the Nismo
Cool to see you trying something new, but I'm not convinced its worth while. By the looks of things I'm guessing it feels pretty good on the bottom-end (horsepower-wise) and maybe a little soft on the top-end? What's your "Butt Dyno" say?
Thread Starter
Registered User
iTrader: (7)
Joined: Oct 2007
Posts: 296
Likes: 0
From: Bum on a beach!!!
Ok so I'm glad to see it bolted on. Can I / we get some info on this thing? Are all the runners the same length as the OE manifold? Are they wider/thicker in diameter? Is the inside of the collector/inlet all square inside or is it rounded? I'm not sure, but to me the square sharp corners inside of the thing would create air turbulance, more than say a rounded design. I'm seriously interested to see this thing make it to any kind of production, especially if it yields gains. Some numbers on a flowbench would also be great.
Also this may not have any effect on anything but if there would be a way to maybe incorporate some fins running the length of the square part of the manifold, (what I formally called the collector/inlet) to act as a bit of a heat sync. Probobly wouldn't yield much temp difference without a vented hood, but it might be worth a shot.
Keep us posted. I want one in anno'd to match the nismo wheels if they show any gains.
Also this may not have any effect on anything but if there would be a way to maybe incorporate some fins running the length of the square part of the manifold, (what I formally called the collector/inlet) to act as a bit of a heat sync. Probobly wouldn't yield much temp difference without a vented hood, but it might be worth a shot.
Keep us posted. I want one in anno'd to match the nismo wheels if they show any gains.
Quick answer equal length round tubes that are square @ lower intake and @ plenum, the lower intake is square.OE intake's are'nt equal length slopes to much up front to be thats my .02!
Then 2nd-3rd power shift spun like stock 1st-2nd. Wheel spin!

Normally lucky to get them to churp with stock 2nd-3rd power shift,just my experiance with my car!
Alot smoother on the power curve up to 7k and then it falls off noticeably!
I would say it has more hp and tq from 2500-6500.How much

If there's interest in this I may go to local mustang dyno,there the one's that gave me the guys # that is doing the fab work, and do a before and after.
Thread Starter
Registered User
iTrader: (7)
Joined: Oct 2007
Posts: 296
Likes: 0
From: Bum on a beach!!!
I don't understand boxy manifolds. Why the extra space in front of the front runner? It seems like you would want rounded ends that flow directly into the front runners. The only time I see it fit is to compensate for the fitment of velocity stacks. Having extra space, in theory, will cause the air to bounce around and create more turbulence/backpressure, forcing flow away from the runner. Everyone is concerned with volume but many people who try this are completely disregarding flow. A high flowing manifold with less volume can outperform a low flowing 1 that has higher volume. The big gains will be seen when someone can increase volume AND flow.
This guy seems to have the right idea. https://my350z.com/forum/intake-exha...-de-motor.html
This guy seems to have the right idea. https://my350z.com/forum/intake-exha...-de-motor.html
Last edited by Steve-O Z33; Nov 20, 2010 at 12:11 PM.
This intake would flow more air than stock part!Thats why it would be a good mod.
King got your message! Would restick front 2 cylinders to much,need to completely redesign the intake ofset every thing back 3 inches or more.
It's 3 inches to high on front side were strut tower bar goes over stock intake.
King got your message! Would restick front 2 cylinders to much,need to completely redesign the intake ofset every thing back 3 inches or more.
It's 3 inches to high on front side were strut tower bar goes over stock intake.
Sure, perhaps it can HOLD more air than stock, but you're not putting more air into the engine (since you're not forced induction, nor have you increased the diameter of the throttle bodies). So, the car is still sucking in the exact same amount of air that it did with the stock plenum. The other issue is that you are not increasing the velocity at which the air gets in (and given the design of that plenum, velocity will be going down, not up). Trust me when I tell you, it's a good thing it doesn't fit, because your stock setup is significantly better designed. The intake manifold on an HR is not a weak link whatsoever. By chopping the front 2 cylinders the way you did, you unfortunately reintroduced the exact issue that the 2003-2005 DE's suffered from (and why they need and respond so well to plenum spacers). The revup engine improved this via a redesigned mid plenum, and the HR essentially completely solved it via a completely different setup altogether
Last edited by Z1 Performance; Nov 20, 2010 at 03:46 PM.
Guest
Posts: n/a
"Flowing more air" is not a measure of gains. It can be measured, but it sounds like you don't even know if it flows more in the first place
Sure, perhaps it can HOLD more air than stock, but you're not putting more air into the engine (since you're not forced induction, nor have you increased the diameter of the throttle bodies). So, the car is still sucking in the exact same amount of air that it did with the stock plenum. The other issue is that you are not increasing the velocity at which the air gets in (and given the design of that plenum, velocity will be going down, not up). Trust me when I tell you, it's a good thing it doesn't fit, because your stock setup is significantly better designed. The intake manifold on an HR is not a weak link whatsoever. By chopping the front 2 cylinders the way you did, you unfortunately reintroduced the exact issue that the 2003-2005 DE's suffered from (and why they need and respond so well to plenum spacers). The revup engine improved this via a redesigned mid plenum, and the HR essentially completely solved it via a completely different setup altogether
Sure, perhaps it can HOLD more air than stock, but you're not putting more air into the engine (since you're not forced induction, nor have you increased the diameter of the throttle bodies). So, the car is still sucking in the exact same amount of air that it did with the stock plenum. The other issue is that you are not increasing the velocity at which the air gets in (and given the design of that plenum, velocity will be going down, not up). Trust me when I tell you, it's a good thing it doesn't fit, because your stock setup is significantly better designed. The intake manifold on an HR is not a weak link whatsoever. By chopping the front 2 cylinders the way you did, you unfortunately reintroduced the exact issue that the 2003-2005 DE's suffered from (and why they need and respond so well to plenum spacers). The revup engine improved this via a redesigned mid plenum, and the HR essentially completely solved it via a completely different setup altogether
Thread Starter
Registered User
iTrader: (7)
Joined: Oct 2007
Posts: 296
Likes: 0
From: Bum on a beach!!!
Sick of idiots posting crap! 
Didn't hack in half,look again won't affect 2 front cylinders to much didn't touch runners.
It's mine, I know it's got potential, something to play with and upset the masses, if you know what I mean! 
I know it flows more air, never said I don't, I know! The most restrictive parts on any motor 6-8 is the intake system and the exhaust.... No stock system is the best, besides how many intakes are out there for 07-08 @ less than $400?
How can you know how this intake flows with out seeing how it's put together internally. I know it looks like crap thats a given! The design and bench flow # it had on a 5.0 ford is why I bought it! The test run tells me this is worth my time and money!
I'm trying something different, I don't understand all the problems people are having with me spending my time and money.I'm not hurting anyone or destorying a nice car, trying to make it better! No one can with 100% certainty say this will hurt the power of the car, if you do your fooling yourself!!!
I know the bashing and naysayers will continue, it's called diarrhea of the brain syndrome.

"Flowing more air" is not a measure of gains. It can be measured, but it sounds like you don't even know if it flows more in the first place
Sure, perhaps it can HOLD more air than stock, but you're not putting more air into the engine (since you're not forced induction, nor have you increased the diameter of the throttle bodies). So, the car is still sucking in the exact same amount of air that it did with the stock plenum. The other issue is that you are not increasing the velocity at which the air gets in (and given the design of that plenum, velocity will be going down, not up). Trust me when I tell you, it's a good thing it doesn't fit, because your stock setup is significantly better designed. The intake manifold on an HR is not a weak link whatsoever. By chopping the front 2 cylinders the way you did, you unfortunately reintroduced the exact issue that the 2003-2005 DE's suffered from (and why they need and respond so well to plenum spacers). The revup engine improved this via a redesigned mid plenum, and the HR essentially completely solved it via a completely different setup altogether
Sure, perhaps it can HOLD more air than stock, but you're not putting more air into the engine (since you're not forced induction, nor have you increased the diameter of the throttle bodies). So, the car is still sucking in the exact same amount of air that it did with the stock plenum. The other issue is that you are not increasing the velocity at which the air gets in (and given the design of that plenum, velocity will be going down, not up). Trust me when I tell you, it's a good thing it doesn't fit, because your stock setup is significantly better designed. The intake manifold on an HR is not a weak link whatsoever. By chopping the front 2 cylinders the way you did, you unfortunately reintroduced the exact issue that the 2003-2005 DE's suffered from (and why they need and respond so well to plenum spacers). The revup engine improved this via a redesigned mid plenum, and the HR essentially completely solved it via a completely different setup altogetherHow can you know how this intake flows with out seeing how it's put together internally. I know it looks like crap thats a given! The design and bench flow # it had on a 5.0 ford is why I bought it! The test run tells me this is worth my time and money!

I'm trying something different, I don't understand all the problems people are having with me spending my time and money.I'm not hurting anyone or destorying a nice car, trying to make it better! No one can with 100% certainty say this will hurt the power of the car, if you do your fooling yourself!!!
I know the bashing and naysayers will continue, it's called diarrhea of the brain syndrome.
I love the idea, but looks like it just need work. Creative, and don't let the others on here affect you. People said the motordyne spacer for the DE's were crap at first etc etc etc.
Didn't hack in half,look again won't affect 2 front cylinders to much didn't touch runners.
It's mine, I know it's got potential, something to play with and upset the masses, if you know what I mean!
I know it flows more air, never said I don't, I know! The most restrictive parts on any motor 6-8 is the intake system and the exhaust.... No stock system is the best, besides how many intakes are out there for 07-08 @ less than $400?
How can you know how this intake flows with out seeing how it's put together internally. I know it looks like crap thats a given! The design and bench flow # it had on a 5.0 ford is why I bought it! The test run tells me this is worth my time and money!
I'm trying something different, I don't understand all the problems people are having with me spending my time and money.I'm not hurting anyone or destorying a nice car, trying to make it better! No one can with 100% certainty say this will hurt the power of the car, if you do your fooling yourself!!!
I know the bashing and naysayers will continue, it's called diarrhea of the brain syndrome.
It's mine, I know it's got potential, something to play with and upset the masses, if you know what I mean!

I know it flows more air, never said I don't, I know! The most restrictive parts on any motor 6-8 is the intake system and the exhaust.... No stock system is the best, besides how many intakes are out there for 07-08 @ less than $400?
How can you know how this intake flows with out seeing how it's put together internally. I know it looks like crap thats a given! The design and bench flow # it had on a 5.0 ford is why I bought it! The test run tells me this is worth my time and money!

I'm trying something different, I don't understand all the problems people are having with me spending my time and money.I'm not hurting anyone or destorying a nice car, trying to make it better! No one can with 100% certainty say this will hurt the power of the car, if you do your fooling yourself!!!
I know the bashing and naysayers will continue, it's called diarrhea of the brain syndrome.
As for what you did to the front runners, I'll reserve further comment.
How many intakes are there for less than $400? Intakes are one thing, intake manifold is another. It's not by accident that there are essentially 0 manifolds to choose from. I'm not just blowing smoke out of my *** with this stuff, I have had (via my engine builder on a customers car) the stock HR stuff on the flowbench, so I know what it is/is not capable of, and how it compares vs all the previous DE and DE revups.
If you actually read my post, I did not say that it flowed better or worse....I said plainly that I don't know....and suggested that it sounds like you don't know either, you're just basing your opinion on a supposition. What I did say, iand which is certainly a fact, is that increasing plenum volume in and of itself is not "flowing more". Air velocity in and out, is equally important as air volume, and many points, is even more important. You're not increasing lift or duration on your cam, you're not increasing the diameter of your throttle bodies, you're not enlarging your valves, or improving their sealing. So you're not "flowing more". Your engine is not ingesting more air simply because the plenum volume has increased. Volume and velocity are interdependant.
As for terrasmaks statement about spacers being poo-poo'd early on, only by those unfamiliar with the engine/platform to be honest. The spacer was one of the first mods several of the Japanese tuners (who got the car earlier than we did stateside) did, and the gains were well documented before the car ever hit the shores in the US. The first one that was available for purchase by the public was by Esprit, albeit very expensive (as everything from Esprit tends to be). A few others made their own, most used the Esprit unit though.
Either way, good luck. Post a dyno when it's all setup and tuned.
Last edited by Z1 Performance; Nov 21, 2010 at 08:30 AM.
Imagine a community site where if someone disagreed with a topic, the thread was ignored. That way, the OP could state his case/idea/results and it would only become popular or a discussion if the results were positive/worthwhile. Otherwise the topic would be ignored/buried. Now where have I seen this concept before?
Thread
Thread Starter
Forum
Replies
Last Post
ars88
Zs & Gs For Sale
18
Apr 4, 2016 07:52 AM
CFAUVEL
Exterior & Interior
3
Oct 1, 2015 03:20 PM








