Intake Manifold Spacer 4.0l Coming!

The numbers I posted for my spacer are accurate, but pertain currently to the Nissan IMS. There should be good gains with the Toyota as well, but until I get one on and test it myself I wont fully know. Torspd and others have tested his so I do know the IMS makes gains. Thanks for the interest guys, I'll keep you posted. It shouldnt be long.

 

I agree with you about the dyno chart in the link that i posted, and know where you are coming from. There is an unknown region of the power band, due to the starting rpm. However, the principles I had previously mentioned, as well as the other member KenLyns, still applies, and is visible in that range of the graph that it shown.

Just to be clear on my end, I never any specific numbers. Only proof that it works. The manifold spacer is nothing new in the aftermarket world. Only to Tacomas. Thus my previous statement of different vehicles will respond differently to the added length of the runners(spacer).

For the sake of being a a scientifically oriented person, I like to test and prove, whether positive or negative. That is why, again, I and 1GRracer will do before and after tests with the spacer. He has a 4Runner, so it is automatic. Also, it will be a DynoJet dyno. I will make sure that they put the correction factor in SAE form. We will then post up the results.

This will be on the 18th of this month. I believe the OP is still planning on doing the same.

 

Here is a mod that will also help gain HP. Also the main reason that the Skunk2 brand IMS is made out of a composite plastic.

Ceramic coat your lower plenum. That will prevent heat transfer and saturation from the heads into the lower plenum, and keep intake temps cooler longer, as the air get closer to the heads. Thus cooler = more dense = more power.

If you get a spacer, have it ceramic coated as well. That will do the same. Prevent heat soak from the motor, into it and then the air flowing through it. < That goes back to the Skunk2 comment.

 

i herrby submit my truck for testing of the spacer at power fab for the good of the comunity

 

subbed

 

Dyno setup for Saturday the 18 at PowerFab. For 1GRracer's 4Runner.

 

, Thank you.

 

Looking forward to seeing the results. See you guys at PowerFab.

 

SuperChargers with intakes don't make power either. We will prove that as well.

Any estimate on what you think yours will make? Seriously

 

Phenolic spacers accomplish the same thing if I'm not mistaken. I've seen some that are pretty thick too (3/8").

 

Honestly, I have no idea. I am aiming low at 300/300 that way anything more and I'll leave the place happy. Dyno's have a way of crushing peoples dreams lol.

 

Yes sir. If I remember correctly, I know there is at least one company that makes them for the Subaru boxer motors.

 

OK so here's how I see it:

This spacer increses the volume of the manifold between the throttle body valve and the engine block.

.... why not make a really long throttle body spacer? And we all know, throttle body spacers don't do a damn thing.

My final analysis of this product, as others said before, if a 1/2'' spacer added that much horsepower for a minimal cost (think of the price of an engine), Toyota would have done it. Promise. It's not like toyota missed it and someone found the concept of adding more volume to the manifold.

Stack 4 throttle body spacers with 4 custom bolts. Same result.

edit: OP, I'm not against you because you're a Nissan guy, I'd say this same thing if a Toyota guy was designing the product.

 

I am sure there is some sarcasm in there, and I would agree that throttle body spacers have proven useless. But comparing this to a extra long quad throttle body spacer is a little inaccurate, the placement of the spacer has different effects on the physics, just like adding 4" to you exhaust will do nothing, but adding it someplace else may increase HP. You may be completely correct in the end and this may be useless and another wasted attempt to get more HP out of our engines, but it is worth letting it play out. We need some dyno results, and it sounds like it is setup to happen soon, and I hope they are detailed because I know this group will not take second rate testing procedures.




I am not an engine specialist, I just play one on the internet.

 

Same here, not an engine specialist, but I read a lot about the 1GR. I just think that such a simple structure would have been added by the engineers. 8-10 additional HP would have been great on the spec sheet.

Yes, a little bit of sarcasm, but then again, I think of it as the same concept when I compared it to the TB spacer. Volume is volume. You can add more space to one end, but no matter what, you're incresing cubic inches. Pressure doesn't give a damn where the space is at.

Can't wait to see some real world dyno numbers.

 

The spacer does add power, but more accurately what it does is change where that power is. You arent running around doing 80-90 miles an hour all the time so taking away from top end to give to the low-mid is whats happening. What you need to learn about ios the intake runner lengths. Longer inproves down low-mid, shorter improves up in the top end. This not by any means new technology. Just because you guys may have not heard about this type of engine improvement does not mean it is not a viable technology.

Intake Manifold Runner

• Manifold, in an automotive application, means a pipe through which something flows. Nearly all engines have an exhaust manifold--the pipe through which exhaust flows--and an intake manifold, which is the pipe through which the intake air charge flows. Most modern engines break the intake and exhaust manifolds into separate pipes that serve each cylinder. So the intake manifold runner is the pipe leading from the throttle to the cylinder head where the intake valve allows air to enter the cylinder.
  But it's not simply a pipe. Each time the intake valve opens, it sets up a pressure wave that propagates back up the intake runner. There, it reflects off the throttle and travels back down the runner. This happens many times per second as the intake valve pops up and down. As you can imagine, the pressure distribution inside the intake runner is a very messy place. But at certain RPMs, the propagation of this intake runner gets in sync with the intake valve so that just as the intake valve opens, it also experiences a positive pressure wave. This pressure wave helps force the intake air charge into the cylinder in a process not unlike supercharging. It's not as strong as supercharging and is not constant, but for certain RPM ranges it can cause a significant improvement in performance.
  Naturally, a long intake runner will require more time for the pressure wave to propagate up the intake runner and back to the intake valve. This means this engine will have a torque peak at a lower RPM range than an engine with short intake runners. Trucks and work vehicles typically have long intake runners, while those of a sports car might be very short. Passenger vehicles might have an intake manifold with intake runners of different lengths to spread out the torque curve into a broader but lower and more manageable profile.
  
  

 

Ive seen spacers for other motors do nothing..I have no confidence in this type of product until I see dyno numbers to prove it..