Cowl induction for cold, ram air for the Si?

[20strong]

Check out home depot, there is loads of epoxy's for bonding plastic. I still think a acrylic box is the easiest solution though.

[F-1 Si]

cover the top of the box with fiberglass then you can bond the fiberglass to the plastic with a simple epoxy.

[20strong]

I am kinda curious about something. Does anyone actually know the pressure that is devoloped at speed near the cowl? the volume of the box would be dependant on the amount of air that could *charge it* wouldnt it?

#2000

[F-1 Si]

Originally Posted by 20strong

I am kinda curious about something. Does anyone actually know the pressure that is devoloped at speed near the cowl? the volume of the box would be dependant on the amount of air that could *charge it* wouldnt it?

#2000

We need to build a wind tunnel to find that answer.

[ocspray]

We talked about using a leaf blower as a crude simulator for creating a charge. The Sportbike testing methodology linked a page or two back looks like a good way to go about it, but it also doesn't look particularly cheap, unless you have free access to HVHP compressors, a dyno, and instrumentation. Even all of that would be easier to gain access to than a rolling road or dyno equipped wind tunnel.

Keep the airbox and ducting ideas coming. It may take awhile, but once Bill gets his latest design on a dyno, we'll have some numbers to discuss. It'll be interesting to see non-charged output vs. simulated charged output. Even if the simulation isn't known to be realistic, at least those numbers would prove or disprove the basic theory and design.

[soxfan143]

Just having the intake pulling cold air from outside the engine bay will be a huge power adder to my MAF housiong design. Because the SRI is super prone to pulling the heated air from around the header in warm weather. Now adding the RAM air effect from moving will only add to the power. This design is sweet. it's too bad I won't be needing my intake anymore since I'm bolting on a GReddy kit next month. YAY. Boost is awesome. I will still be following this thread tho just to see how everything turns out.

I'm sorry to hear about your car Bill. I hope you are OK. How bad is the damage? I think you should order up the Type R rear bumper. That thing is Freakin Sweet. Keep the USDM Tail lights but get the JDM rear bumper. After my GReddy kit goes on that's my next mod.

[Si Speed 317]

I have been thinking a lot. This has been on my mind for a while, as in way before this thread was started but I've been looking at more and more things now. Here's my rant:

We know the Si engine bay is not only small, has an unusual location for the intake (as does the RSX-S), but is susceptable to heatsoak, and in general a very hot engine bay with almost no where for the heat to go. So we not only need air from colder locations, but we need to block engine heat! Here is what I have come up with:


Above is an 06-08 GTI 2.0T with an aftermarket SRI. Notice that the SRI comes with a heatshield around it and the rubber insulation on the edges which presses against the inside of the hood where the liner is when the hood is closed. This creates a seal and will help keep engine heat away from the filter and the air it sucks in. Next, note the insulation over the piping of the SRI, it helps block engine heat since it surrounds the engine. We might not need this insulation, but definitely a heat shield "wall" is necessary.


Here is our main problem:

Above is an Si with an Injen SRI. Notice the area from where the intake starts (throttle body) to where the battery is... there is only one general direction for a Short Ram intake to go, and that is towards the back of the engine bay. We can't go to where the battery is unless we re-route the battery or use the smaller one that sits lower. I might go that direction, depending on price, but right now I'm aiming at a much simpler direction.

What might be the best idea thus far(not including ram air) when it comes to cold air and safety and performance is to take the stock box, fit a conical filter inside, and cut a large hole in the bottom of the stock box, towards the battery. I also want to make a heatshield around that area so we will have even cooler air coming in. The heatshield isn't exactly necessary because that is what the stock box would be doing, but it is do-able.

I have been playing around with a bunch of ideas in my head and I have come up with this setup:
Stock box: top modded to fit the filter of your choice but still remain enclosed; bottom modded to have large cutout underneath. This leaves stock mounting points, as well as colder air. Think about it, heat rises. Much hotter air will be at the top of the engine bay than at the bottom

Now all that is left to do is figure out how the hell to do this all XD.
I will probably end up fiberglassing the rest of the enclosure of the top box just to make it all fit well and still reflect heat.

[djdisturbed]

Originally Posted by Si Speed 317

I have been thinking a lot. This has been on my mind for a while, as in way before this thread was started but I've been looking at more and more things now. Here's my rant:

We know the Si engine bay is not only small, has an unusual location for the intake (as does the RSX-S), but is susceptable to heatsoak, and in general a very hot engine bay with almost no where for the heat to go. So we not only need air from colder locations, but we need to block engine heat! Here is what I have come up with:


Above is an 06-08 GTI 2.0T with an aftermarket SRI. Notice that the SRI comes with a heatshield around it and the rubber insulation on the edges which presses against the inside of the hood where the liner is when the hood is closed. This creates a seal and will help keep engine heat away from the filter and the air it sucks in. Next, note the insulation over the piping of the SRI, it helps block engine heat since it surrounds the engine. We might not need this insulation, but definitely a heat shield "wall" is necessary.


Here is our main problem:

Above is an Si with an Injen SRI. Notice the area from where the intake starts (throttle body) to where the battery is... there is only one general direction for a Short Ram intake to go, and that is towards the back of the engine bay. We can't go to where the battery is unless we re-route the battery or use the smaller one that sits lower. I might go that direction, depending on price, but right now I'm aiming at a much simpler direction.

What might be the best idea thus far(not including ram air) when it comes to cold air and safety and performance is to take the stock box, fit a conical filter inside, and cut a large hole in the bottom of the stock box, towards the battery. I also want to make a heatshield around that area so we will have even cooler air coming in. The heatshield isn't exactly necessary because that is what the stock box would be doing, but it is do-able.

I have been playing around with a bunch of ideas in my head and I have come up with this setup:
Stock box: top modded to fit the filter of your choice but still remain enclosed; bottom modded to have large cutout underneath. This leaves stock mounting points, as well as colder air. Think about it, heat rises. Much hotter air will be at the top of the engine bay than at the bottom

Now all that is left to do is figure out how the hell to do this all XD.
I will probably end up fiberglassing the rest of the enclosure of the top box just to make it all fit well and still reflect heat.

Well K&N has already been trying what you are saying with there SRI. Maybe take a look at there design and improve on it to make the heatshield work better on it.

[Si Speed 317]

I thought about that but it doesn't shield enough heat. We need an area that is just flat out COLD =D I just got something while looking at my engine bay, i'll let you know in 15 mins after i pick my lil bro up from schoool

[Si Speed 317]

Alright, sorry for the double post. I don't exactly know what this tube is for, but it sure as hell is getting cool air in. AND the area that this, the battery, and the ECU surround which is to the inner side of the drivers fender is REALLY cool air. Check it out:







This is the area I'm talking about

[Si Speed 317]

[k20z3 Koop]

yes

2008 Honda Civic Si - Features - 2.0-Liter, K20Z3 Engine

[Si Speed 317]

^ Well Honda had some good ideas going stock (apparently) but I'm surprised no one thought of doing this:


That way there is no water being sucked in

[Si Speed 317]

BUMP please

[ocspray]

Honda found a cool air source, but they also had Dr. Seuss on retainer for intake development. The stock intake is very convoluted, which constricts the air flow to the point where it affects engine output, regardless of air temperature. After using a SRI, it would seem Honda would've done better to have developed a cowl intake system with a significantly smoother, shorter, cooler, pressurized, and dare I say, better sounding intake tract, but then Bill wouldn't have a hobby.

[F-1 Si]

Have you guys taken a look at any of the intakes for the TSX, they all get fresh air from that very same point.

[Si Speed 317]

Originally Posted by ocspray

Honda found a cool air source, but they also had Dr. Seuss on retainer for intake development. The stock intake is very convoluted, which constricts the air flow to the point where it affects engine output, regardless of air temperature. After using a SRI, it would seem Honda would've done better to have developed a cowl intake system with a significantly smoother, shorter, cooler, pressurized, and dare I say, better sounding intake tract, but then Bill wouldn't have a hobby.

The part that annoys me is that, unless the battery is relocated, there is no place to get cold air while maintaining short piping, unless you go OVER the battery, which might not be a bad idea, but it looks like crap =/
We would need to get basically a bent pipe, not sure of the angle yet, attach the Si intake tube to the MAF housing, then the MAF housing to the tube then the filter =D and then route it behind the battery =D

Originally Posted by F-1 Si

Have you guys taken a look at any of the intakes for the TSX, they all get fresh air from that very same point.

Please post pics!

[F-1 Si]

I saw one on a TSX I'm looking as we speak

[Si Speed 317]

^ If its in person, can you take and upload pictures? If it's online, link us!!

How much is a battery relocation kit? And are they reliable? How long do they last compared to stock Honda Battery?

[F-1 Si]

Originally Posted by Si Speed 317

^ If its in person, can you take and upload pictures? If it's online, link us!!

How much is a battery relocation kit? And are they reliable? How long do they last compared to stock Honda Battery?

I saw it a few weeks ago. I just spoke to a friend of mine he told me it was a 04 TSX with an Icebox. There alot more room under the hood of those cars.

As for the battery reloc kit I was looking at the password kit, it's right on their web page