Custom intake

Alright I am building a custom intake for my 99 GT. I am using silicone hoses from siliconeintakes.com. Ill post a bunch of pic of the install and final product. Let me know what you think. This is just a crappy cell phone pic but this is the piece that will go from the throttle body to the maf.

Jump to page 4 post #54 for the intake results.

You could use this for the PCV lines? Maybe just trim back the silicone if you need to at the top joint and slip this in with some fittings and you'll have 3 spots to tap into.

http://www.siliconeintakes.com/product_info.php?cPath=9&products_id=1232&osCsid=8cdde618405389f53ed019c94a527338

I'm piecing an intake together now! Lol...

Isn't the throttle body a 2.75" diameter? And what is the benefit of the 4" section as opposed to just 3" all the way through?

The benefit is increased air velocity. Because the air has nowhere to go it has to speed up to go through the intake.

You could use this for the PCV lines? Maybe just trim back the silicone if you need to at the top joint and slip this in with some fittings and you'll have 3 spots to tap into.

 

http://www.siliconeintakes.com/product_info.php?cPath=9&products_id=1232&osCsid=8cdde618405389f53ed019c94a527338

 

I'm piecing an intake together now! Lol...

Not a bad idea. Post a pic when you get it together.

The benefit is increased air velocity. Because the air has nowhere to go it has to speed up to go through the intake.

Wtf are you talking about? Why do you want higher velocity? Smaller tubing = more restrictive ... period.

Here's a custom intake for you...

http://www.blitzusa.com/products/oil/Funnels/poflf.htm

Increases velocity!!!

I didn't say it would suck. I'm sure it will work. I hope you have fun with the project... I don't mean to come off so condescending... but funneling air through smaller tubing to increase velocity is counterproductive. The idea of an intake is to filter air as freely as possible. For a given volumetric flow, smaller tubing will increase velocity, but increased velocity results in increased wall friction generating an unecessary loss.

In the end it isn't worth arguing over b/c that loss is insignificant. The biggest loss from an intake is the pressure drop across the filter itself which is - I'd guess - at least an order of magnitude greater than the drop caused by wall friction or bends in piping.

Wtf are you talking about? Why do you want higher velocity? Smaller tubing = more restrictive ... period.

Yeah smaller is more restrictive. I didnt make the tubing smaller I made it bigger. I am limited to the size of the throttle body of the car.

Here's a custom intake for you...

 

http://www.blitzusa.com/products/oil/Funnels/poflf.htm

Increases velocity!!!

That is obviously too small of an opening to fit over the throttle body.

I didn't say it would suck. I'm sure it will work. I hope you have fun with the project... I don't mean to come off so condescending... but funneling air through smaller tubing to increase velocity is counterproductive. The idea of an intake is to filter air as freely as possible. For a given volumetric flow, smaller tubing will increase velocity, but increased velocity results in increased wall friction generating an unecessary loss.

 

In the end it isn't worth arguing over b/c that loss is insignificant. The biggest loss from an intake is the pressure drop across the filter itself which is - I'd guess - at least an order of magnitude greater than the drop caused by wall friction or bends in piping.

You implied it would suck by you rude statements. Then when someone came along with an intelligent response you tried to save yourself with science.

Now im not an expert. But I dont know why wall friction would matter at all because the increase in velocity is still greater than the friction it creates. Otherwise how could you ever increase flow?

Also this design isnt mine. Professionals do it all the time. The aem v2 intake has a staggered design. The password jdm intakes a huge "bubble" in their intakes. I was simply inspired by there design. I dont know what intake your comparing mine to but if you think this will not outperform the stock intake than you seriously need to rethink that.

Now for my explanation of making an intake to "increase velocity"

The idea behind my theory is that there is a greater amount of air in the larger chamber of the intake and it is then compressed to fit into the smaller chamber resulting in the air speeding up.

As far as adding more flow I am again limited simply by what the throttle body can flow itself. The most I can do is allow it to reach the maximum flow under the highest velocity. The increase in velocity simply allows for more pressure to be put on the intake valves upon opening. Increasing power at a point when the engine could have used more air but it was not available. I dont know when that is but likely above 3K rpm.

As another note this concept can be applied to exhaust only in reverse.

Unfortunately this design is more beneficial with higher revving cars like the Honda S2K. But I figured I would give it a try on the legacy to see if it worked well. Also because there is so much extra air sitting in the intake over stock throttle response will likely be greatly increased.

And as a final note I am really doing this as an experiment. Im not expecting any miracle amount of hp out of it. I just figured if I was going to make a custom intake I would make the best one I could. I have probably used larger piping than is needed but that is simply there was no cost difference in doing so.

I'm going to keep my mouth shut on this one...

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An update.

Got the filter and the maf adapter in. Just need to get some good adapters for the vacuum lines. I have to work for the next couple days and my GT is having one of its coolant hoses tightened and the thermostat replaced so I hope to have it done by next week. Anyway here is a quick pic.