Intake Manifold Spacer Kit Interest Thread For 2.5L

[Colton92]

Ok I have been talking with Aaron from NWP Engineering about designing a Intake Manifold Spacer Kit for our car and he has expressed interest in making it for our car.Heres what his email says

I would definitely love to take a close look at your engine bay and remove the engine cover to see what kind of products would be beneficial.

Please feel free to start an interest thread. Be sure to tell the members that a product will ONLY be produced if we can proof a substantial gain of 6 or more HP. Most of our spacer kits show increases of 10 or more HP. Also, if you feel there are racers out there, they may be interested in an engine torque link that braces the engine. This prevents wheel hop and other traction issues.

Here is his website link as well http://www.nwpengineering.com/

Modified by Colton92 at 6:56 PM 7/15/2009
Modified by Colton92 at 6:56 PM 7/15/2009

[ESP]

You've got my curiosity.......

[bravey_z12]

hp ,hp, hp thats all i want

[b88dragon]

interesting, now what do these do exactly? lol

[alteredbeast]

interesting, now what do these do exactly? lol

Well I jus researched intake manifold spacers. What I read said:

"...fits between the upper and lower manifolds to help dissipate heat and significantly increase performance..."

and

"...provide heat insulation between our upper and lower manifolds for a cooler charge and more power..."

Now someone correct me if I'm wrong, but what I gained from this small bit of info, and a bit of combustion cycle know-how, is that this is a thicker, insulating replacement for gaskets, mainly the one between the intake manifold and engine. The reason (I think) this creates power is that its keeping the intake manifold cooler, thus making incoming air cooler and more condensed, meaning more air per explosion in each cylinder... more air, more fuel, bigger explosions, more power.

Although I could be wrong...very wrong... someone should chime in and help lol

Btw, I've never heard of this mod on any car, but it sounds pretty straightforward and I'll definitely buy if its offered at a reasonable price.

[chiapetchua01]

count me in

[TurboSauce]

Sounds Awesome

[DaCoupe]

im interested!!!

[LinkNuc]

I call complete BS, 10HP, please, maybe 1, likely ZERO, have about as much effect as a grounding kit, none

[DaCoupe]

I call complete BS, 10HP, please, maybe 1, likely ZERO, have about as much effect as a grounding kit, none

[Colton92]

I call complete BS, 10HP, please, maybe 1, likely ZERO, have about as much effect as a grounding kit, none

As he states unless there is proof of a substantial gain of 6 or more hp it will not be made.and a grounding kit does not even advertise to give you horsepower gains so Im not sure how these two products are even comparable.

[ItsEcko06]

i want HP as much as the next person but i think this has been mentioned before. what i've heard is that because our intake manifold is mainly or all plastic, this spacer wont work well since the plastic manifold doesn't absorb much heat like a metal one would. soooooooo..........

[LinkNuc]

Yeah we had this discussion in another post, exactly.

[Colton92]

Ok it looks like he will not be able to create a intake spacer unless he can get a Altima with a MT but he will be taking a look at my engine bay and seeing what else he could possibly make

[dldjros69]

NC is a little far for me. But if im ever down in that area ill hit him up.

lol

[Throckmorton]

I call complete BS, 10HP, please, maybe 1, likely ZERO, have about as much effect as a grounding kit, none

I am in complete agreement with your comment. I am amused when I read a thread where someone is hawking a product that claims to unlock magic HP from the Nissan powerplants.

I think most people will agree with this statement: Nissan powerplant R+D engineers know how to make powerful, reliable engines. Before the complaints roll in, I am aware of the 2.5 pre-cat issues, and Nissan's response to the problems.

We can all debate the pros and cons of CVT transmissions, but that is not what we are discussing in this thread.

If this company, or any aftermarket speciality tuner for that matter, could promise 10 HP by installing a spacer in/on/between your intake manifold, ask your self this question:

Why doesn't the car come from the Nissan factory with the spacer/in/on/between the manifold?

Don't you think that Nissan would jump at the chance to gain 10 "free" HP, if only they used a magic spacer? Of course they would! Why don't they put one of these magic spacers on the cars?

Here is why they don't use it: Because it is non-existent, thats why. It's B.S. It does not work.

Some of these guys would put a feces sandwich, on rye bread with mustard, in their intake manifold it if they were told that the fumes from the sandwich as it decomposed gave them 10 HP, increased torque, increased their gas mileage, lowered their ET in the quarter mile, and was somehow connected with male enhancement.

Me? I am going to stick with what I know works...chrome valve stem caps on all four wheels. My car is much faster with them, my butt dyno says so. My car also seems to accelerate much faster going down a steep hill on the Interstate, so I guess that my car makes more HP going downhill, right?

Later,Leonard T.

[dldjros69]

I am in complete agreement with your comment. I am amused when I read a thread where someone is hawking a product that claims to unlock magic HP from the Nissan powerplants.

I think most people will agree with this statement: Nissan powerplant R+D engineers know how to make powerful, reliable engines. Before the complaints roll in, I am aware of the 2.5 pre-cat issues, and Nissan's response to the problems.

We can all debate the pros and cons of CVT transmissions, but that is not what we are discussing in this thread.

If this company, or any aftermarket speciality tuner for that matter, could promise 10 HP by installing a spacer in/on/between your intake manifold, ask your self this question:

Why doesn't the car come from the Nissan factory with the spacer/in/on/between the manifold?

Don't you think that Nissan would jump at the chance to gain 10 "free" HP, if only they used a magic spacer? Of course they would! Why don't they put one of these magic spacers on the cars?

Here is why they don't use it: Because it is non-existent, thats why. It's B.S. It does not work.

Some of these guys would put a feces sandwich, on rye bread with mustard, in their intake manifold it if they were told that the fumes from the sandwich as it decomposed gave them 10 HP, increased torque, increased their gas mileage, lowered their ET in the quarter mile, and was somehow connected with male enhancement.

Me? I am going to stick with what I know works...chrome valve stem caps on all four wheels. My car is much faster with them, my butt dyno says so. My car also seems to accelerate much faster going down a steep hill on the Interstate, so I guess that my car makes more HP going downhill, right?

Later,Leonard T.

Wow man there is alot of hate in that post. Relax and chill the tone.

As you said why would the car come with a spacer from factory like that.

Well im specifically not talking about a spacer here, but how bout the Sentra that put 200 hp with the same engine as ours? Why do they give it the same torque numbers but 25 more hp?

Is it a better tune, internals, rev limit or all?

[Throckmorton]

Wow man there is alot of hate in that post. Relax and chill the tone.

As you said why would the car come with a spacer from factory like that.

Well im specifically not talking about a spacer here, but how bout the Sentra that put 200 hp with the same engine as ours? Why do they give it the same torque numbers but 25 more hp?

Is it a better tune, internals, rev limit or all?

No hate here, just lots of love. Sometimes, the truth is painful.Sorry, but I am not drinking the 'me too, can't wait, I'm going to get one, count me in" koolaid.

Here is some information from The Truth About Cars about the Sentra SE-R:

NISMO’s breath upon the Altima-sourced 2.5-liter engine hath bumped compression with special pistons and some tasty trick pieces (e.g. a cast-resin manifold). The resulting lump boasts a higher redline (6800 rpm) and more horses (200hp). The Sentra’s modified mill stumps up 180 lb/ft of torque. Though the twist now arrives higher up in the rev range, that’s the same grunt as the previous gen SE-R. Despite 3100lbs. of not so curvaceous curb weight and reduced low-end torque, the Sentra pulls a respectable 0 to 60mph time of around six-and-a-half seconds.

This is from the Nissan website:

Sentra

QR25DE – 2.5-liter DOHC 16-valve 4-cylinder engine 177 hp @ 6,000 rpm 172 lb-ft of torque @ 2,800 rpm Compression ratio – 9.6:1 QR25DE – 2.5-liter DOHC 16-valve 4-cylinder engine 200 hp @ 6,600 rpm 180 lb-ft of torque @ 5,200 rpm Compression ratio – 10.5:1

Altima

QR25DE – 2.5-liter DOHC 16-valve 4-cylinder Horsepower – 175 hp @ 5,600 rpm [1] Torque – 180 lb-ft @ 3,900 rpm

As you can see, this is how Nissan increased the peak HP for the Sentra.The extra HP does come at a price, and that price is raising the rpm to 5200 for maximum torque, versus 2800 rpm in the lower HP Sentra

For a detailed explanation of Torque versus Horsepower, simply Google that phrase.

You will then understand that for street driven automobiles, low rpm torque is what the manufactures strive for.

"Knowledge is a possession of which man cannot be robbed, everything else needs to be bolted down and padlocked."

Later,Leonard T.

[dldjros69]

Well thank you for spelling that out for me. That was the first time i saw that in that much detail. (the sentra lost alot of torque at low rpms, ill take my my hp and keep my torque where its at.

a product will ONLY be produced if we can proof a substantial gain of 6 or more HP. Most of our spacer kits show increases of 10 or more HP.

At least they seem somewhat honest.

Also i dont put all my stock in the fact that Nissan/car makers put all their R&D into every part. That is why after market communities/companies exist. Some times cars are detuned to not compete with their more expensive big brother or maybe to keep things smoother or quieter. It could also be more cost effective for nissan/car makers to produce part x that yields 5 hp vs part y that yields 10 hp but cost twice as much.

[Throckmorton]

Well thank you for spelling that out for me. That was the first time i saw that in that much detail. (the sentra lost alot of torque at low rpms, ill take my my hp and keep my torque where its at.

At least they seem somewhat honest.

Also i dont put all my stock in the fact that Nissan/car makers put all their R&D into every part. That is why after market communities/companies exist. Some times cars are detuned to not compete with their more expensive big brother or maybe to keep things smoother or quieter. It could also be more cost effective for nissan/car makers to produce part x that yields 5 hp vs part y that yields 10 hp but cost twice as much.

Bingo! You are now looking at the big picture. You are right about the R&D comment. This is not like a NASCAR team's engine R&D, who are constantly for more HP for their team's race cars.

Look at the main competitors in the Altima class: Honda Accord, Toyota Camry, Chevy Malibu. Checking the manufactures stats, they all are rated at about the same HP, give or take a few HP.

None of the manufactures want to be low man on the totum pole of HP, so they do what they need to do, within a budget, to stay competitive with each other. Why do you think that Honda increased the displacement of the Accord V-6, from 3.0L to 3.5L ? Because they were out horse powered by their competition is one reason. Nissan and Toyota hd 3.5L in their cars.

A good example of maximum HP, without a turbo, is the 2.2L I-4 in the Honda S-2000 2 seat sports car.

The engine is rated at 237 HP @ 7800 RPM, with a redline of 8000 RPM.

The engine is rated at 162 ft. lbs. of torque @ 6800 RPM.

Road test reports say that the car is a rocket, but only at high RPM. The engine make so little torque at low RPM's, that the driver is constantly shifting the 6 speed transmission to keep the RPM's up into the range where the torque and HP live. The car is relatively lightweight, at around 2900 lbs, which of course helps with acceleration. The car performs well at what it was designed for.

What would happen if a manufacture put a high revving, high HP, low torque engine in a family 4 door sedan? I'll tell you what would happen. The road tests reports would be awful, the average consumer, who does not drive a car at redline, would demand their money back because they would claim the the car is a 'dog' the way they drive it. They would rightfully complain that the car was underpowered.

Read the comments in the exhaust thread. Comments I have read say that some cat back systems may increase maximum HP at redline, but they reduce torque at normal driving speeds and RPM.

Maximum horsepower is a great thing to strive for, but not at the expense of torque, IF you drive your car on the street.

Take care,Leonard T.

[LinkNuc]

Told ya, never panned out for the original VQ (2003) or the 5.6....ain't gonna work on a nissan

[windex]

Oh what a few months does...

Received 9/18/08 from Aaron @ NWPQuote »We do not currently have any plans to make Intake Spacers for the new modelAltimas. We would definitely be interested in conducting some testing tosee if you would benefit from intake spacers.

Also, since your intake manifold is made of a plastic composite, it is noteffected by heat like the other Nissan engines are. So, heat soak isn't abig issue for you. You will not need a Thermal Intake Spacer to helpinsulate. But, we are currently designing an aluminum intake spacer for theVQ40DE Frontier engine. What this will do is shift the torque band lowerand provide a healthy low end and midrange power gain! Proper testing willneed to be conducted on the Altima to determine the optimal spacer design inorder not to hurt top end power substantially.

Please let me know if you have any more questions.

Thanks,

Aaron KimballNWP Engineering, Inc.http://www.NWPEngineering.com252-747-7672[/quote]

[JDRosenberg07]

I'm down for the spacer kit if the can prove sufficent gains from it. Or even if it just lowers the point of peak torque. Depending of course on the price

[FastQuest]

How does the spacer create extra HP ?