I thought I shouldn't post something on the forum until I thought I have something usefull. I've been working a lot lately on a 20B 3D CAD model. I've used the search funtion more than I can count. Anyways, just thought I would share my work will all, and if anyone has suggestions/comments or could help me in some way, I'd really appreciate it. I'm doing this is hopes of using it for a future college project, plus I really love these engines. On to the good stuff.

 

More

 

Two more

 

So why do you have a 4 rotor intake manifold on a 3 rotor engine?

-Alex

Edit: I just noticed that one primary runner is smaller in width than the rest...

 

The extra runners are for a small Per Port...let me make a picture for ya...

 

I thought that it might be a semi PP, but why would you try and make an oval shaped runner, for a circle PP?

-Alex

Edit: BTW, I forgot to mention you have some nice solid models there! I've made quite a few solid models of intake manifolds. Everything from a single TB, ITB's, and a slide throttle setup! I have yet to decide wether or not I want to go with a slide throttle, or an ITB setup...

 

I'm lazy and haven't fixed it yet.


-EDIT- I'm currently working on a new intake manifold. I'm trying to figure out how you can get an actuated runner length on a boosted application. That'd be interesting to do. Nice challenge.

 

Before you try and design a variable length intake manifold, shouldn't you try and design your own "regular" intake manifold and exhaust manifold?

I'm sure you've been through Auto Illusions thread, and have seen the drawings he's made of his intake manifold, along with the pictures of the machine work I did for it... There's a couple of diffrences between the two, however, I can't mention what they are as they're Rich's drawings! There was several reasons I never posted solid models of his intake manifold, and this was one of them! One difference that I can mention is yours is for a semi PP engine, and his is for a SP. Another thing I can say is that intake manifold won't work on a 20B as it'll run into several items on the motor...

I also spoke with Rich, and it seems "your" exhaust manifold matches his exactly...

-Alex

 

Sorry if I offended someone. I never intended to "release" confidential information, and if I did, then I'd gladly remove these images. I just though I'd show some of you guys something that not many people have done, which is an actual representation of a 20B engine.

 

Changing the intake

 

Change it back!

 

I have the other one still saved so it's not like I it's a permanant thing

 

none of it is permanent, it also is not real.

 

No ones offended! There's no confidential information here...I just think credit should be given to Rich. (Auto Illusions)

Sorry if I came off as an *** or anything! Keep your drawings as they were!

-Alex

Edit: Regardless of everything...You have some really nice drawings there, and it's great work!

 

Yes, the credit should definantly go to him. Couldn't agree more.

 

Well, ya gotta start somewhere! I can promise you that many people, including myself, have inspected Hogans and Wilsons manifolds for ideas. You have to start with something you know works!

-Alex

 

That 3D model looks very familiar to me,......OH, it has ports sorta like mine!! Sweet!!

 

He stole it from you!

LOL, J/K!

-Alex

 

Yeah, haha, but p-ports werent thought up from me, someone did it many years ago. But, HOW I did it is what makes it different from others. Its the details. I was kinda surprised to see how obvious the 3D model of his, matched Auto Illusions though. I know one thing for sure, the new intake I am making wont be easily copied....

I am not bashing you swimmer4uus, I really do like the 3D models, just gotta watch other peoples toes, they worked hard for them.

 

Auto Illusions looks pretty easy, which is what I thought at the get-go as well. Lemme tell ya, I bet VERY few machine shops could replicate it. The solid models went pretty smoothly, the machining is what ended up getting pretty tricky!

You think yours will be hard to replicate, wait till everyone sees what I have in the works! Only thing left on the design is to decide between an ITB setup, with the primary TB's opening slightly before the secondary TB's, or the same setup concept with a slide throttle! I'm kind of leaning towards the slide throttle setup since not many people have even tried one! Regardless of which one I choose, the plenum and TB's will be removable from the runners. I decided to do this so I can switch between an ITB, slide throttle, and single TB setup, without having to re make the intake manifold. It's also removable for TB maintenance, and access to the coils that are mounted to the motor, spark plugs, and spark plug wires.

-Alex

 

Yeah, the intake design is pretty simple. I wanted to start out with something simple and then hopefully get some ideas from there. I was kinda shocked when I looked into his thread and there where the same exact runners that I had. The only thing I really took guidance from was his manifold. But, you guys have to realize that I have many other manifolds suppressed. The other ones just are hideous and I'm sure more than a couple of people would hurl if I posted pictures of them. I guess all the good ideas are taken!

Edit- For your guys' viewing pleasure, or horror, which ever fits you. Here is the other configuration I have.

 

Yeah, auto illusions is complex, its the details that make it harder as well, as you stated. I also didnt mean to sound like my new intake is some sort of UBER complex system, just that I havent seen one like it before. Also, Alex, dont give any details away, wait until its done! Its like someone telling me scenes from a good movie before it comes out!

 

Oh yeah, Alex, are you building a 20B intake or a 13B intake?

 

Shouldn't I keep all the details to myself until it's done?

I don't want to give anything away!

-Alex

 

Good job, you passed the test.......