Intake Idea

[Myxalplyx]

Update: Stopped by Verocious Motorsports today since I took off work early. The main person was not there again. They will be giving me a call on the two designs I proposed to them previously. One design is similar to SVXfiles intake where the two throttle bodies immediately join into one pipe to make a 'normal' intake. This is mainly to get rid of the 'bumpiness/accordian' of the stock intake and make the air transition to the throttle bodies smoother. The 2nd design is duap piping coming from each throttle body to a 'Y' pipe that joins to a single pipe just before the maf sensor. Purpose:?: Just to see what it does in the name of science.

So, I'm still waiting for prices and such. Holes will STILL need to be drilled into the intake(s) for vacuum hoses and such. Fitting probably won't be perfect. Who knows. So I twiddle for yet another week. Can't make my own intake since the only decent 'Y' pipe I found on the net is on backorder. I cancelled that order.

I'm working with a map system so the dual piping is going to be easier for me. If you can pull it off the dual pipes is the way to go. Once we get my motor on the dyno I'm going to try two lengths about three feet each and go up from there. http://upetd.up.ac.za/thesis/availab...ssertation.pdf this is a good thesis on resonace tuning and it discusses the differences in tuning the intake between four and six cylinders. A main point of his is that for a four focus should be made on the ram effect of the runner while on a six with its seperate banks secondary helmholtz resonance plays a much bigger role. I think you are correct in trying to make the two pipe setup work since this would be increasing the "spring" or maybe at this point it could be considered a mass, I don't know. Some pros have told me that this is definetely the way to go and worth the effort. A phenolic spacer on the throttle body would also increase the volume of the plenums and help the air get around the corner to the front cylinders more efficiently.

[SVXRide]

Originally Posted by VTsuby

I'm working with a map system so the dual piping is going to be easier for me. If you can pull it off the dual pipes is the way to go. Once we get my motor on the dyno I'm going to try two lengths about three feet each and go up from there. http://upetd.up.ac.za/thesis/availab...ssertation.pdf this is a good thesis on resonace tuning and it discusses the differences in tuning the intake between four and six cylinders. A main point of his is that for a four focus should be made on the ram effect of the runner while on a six with its seperate banks secondary helmholtz resonance plays a much bigger role. I think you are correct in trying to make the two pipe setup work since this would be increasing the "spring" or maybe at this point it could be considered a mass, I don't know. Some pros have told me that this is definetely the way to go and worth the effort. A phenolic spacer on the throttle body would also increase the volume of the plenums and help the air get around the corner to the front cylinders more efficiently.

VT,
Couple of things:
1. Might want to warn folks that have dial up accounts that the thesis is 6.2M in size...
2. The "spring" is also going to be a function of the exhaust cam timing
3. Looking forward to your dyno time...a couple of us have been working with the physics of the exhaust for a while and, to a limited extent, trying things out on our cars to see if theory proves out. Could you add a step in your work that addresses the length/dia of primary pipes and when they tie together to a single chamber (be it a Cat or a muffler - might want to address the potential "optimal" volume), as many of us don't want to run dual pipes all the way back.
Thanks!
-Bill

No not dual exhuast. I'm referring to the intake idea of spliting the induction into to seperate pipes that are isolated from each other to amplify secondary helmholtz resonance.

You know you could make your y pipe out of fiberglass fairly easily. Glue some blueboard together use a hole saw to make the flanges carve the rest. Glass it, sand, and paint. Use some silicon hose to join it all together, it would look pretty slick.

[Phast SVX]

i may just make you one next time im out at the shop. Im kind of out of projects(and money ) for now!
phil

[TomsSVX]

If you guys are seriously interested in doing this, may I make one suggestion. Take the stock length of the snorkus into consideration and be sure to make each bank equal length. Without this airflow to either bank can vary and that is not something you want to deal with

Tom

[Myxalplyx]

Originally Posted by VTsuby

You know you could make your y pipe out of fiberglass fairly easily. Glue some blueboard together use a hole saw to make the flanges carve the rest. Glass it, sand, and paint. Use some silicon hose to join it all together, it would look pretty slick.

Do you know some examples of this that you may have seen over the internet?

And thank you for the PDF file on resonance tuning. I have not read it yet but will be saving it after posting this and will probably be reading this tonight.

no, but glass would give you alot more freedom of design. I sure theres some bling bling subwoofer forum that could tell you all about fiber glass or even carbon fiber if you want to get fancy. I've just seen our FSAE team doing carbon work they get alittle more complicated with female molds and vacum bags but you aint building and F1 car

[Myxalplyx]

Mild update! Called Verocious Motorsports. They stated they have just about all the piping but was waiting to hear back from the welding guy. Said they haven't heard from him in about 2.5 weeks. Apparently this guy/shop owes them some money so they figure he may be stalling or something for the moment. I told them I do not need a welder, only the pieces. I can take care of the welding through other sources. Originally, I wanted them to fab up the whole thing. It is not necessary though.

Sooo, I am expecting all the pieces to be together by Tuesday (Hopefully Monday). Of course I'll take some pics so you can see how it would look. I hope this does not become a bunch of B.S. I like these type of things to go smoothly. So.....again...I wait.

If there is no progress by next Tuesday afternoon, I am going to plan B (Another shop or Ghetto style fabbing). It may get ugly.

[SVXRide]

bump for progress....

[Myxalplyx]

Originally Posted by SVXRide

bump for progress....

Well, here it goes for my silliness. Picked up a couple of pipes today. Brutalized a stock SVX intake and conjured up this.




Now, I'm in search of something like this-->


to connect to the maf sensor. Then from the maf sensor a BIG friggin air filter that would be in the fenderwell for cooler air (Like Motorsports Cold air unit)--->


Drill some holes for vacuum lines and such and call it a day. *sigh* Will take time!

[immortal_suby]

looks great!

[Budfreak]

Looking good man. Can't wait for you to finish it up and see what happens.

[svxfiles]

Originally Posted by Myxalplyx

Now, I'm in search of something like this-->


to connect to the maf sensor.

I have always wanted to try this pipe.