Got to page 30 after 3 hours of reading. Jumped to the end to congratulate you on an awesome build. Excellent craftsmanship! Will read the rest tomorrow.

Dxbtune

 

^you can make more posts appear on your page so you can only be on page 23 instead.

 

^thanks for the heads up haha

 

wow i love being in a boring class, went through all the posts within 2 hours

 

Tonba,

I did nothing for my throttle body and intake manifold - they are both bone stock. I'd like to get a Mil-Spec 65mm TB, and do a little porting to my stock manifold. I just need to take care of a few other things first.

The foam core for the wing will be here tomorrow, and I bought the material for the rear diffuser.... and my wife is out of town this coming weekend. Should get some work done. I'm gonna take car of that stuff before I pull the head and render the car unmovable for a little while. I may even do the cage before I start the head gasket.

 

NP I didnt know for a long time either.

 

Wow, nice power on stock mani! That AMS F1-I intake looks pritty good.

Personally, Im tossing up between;

-F1-I Intake + MIL.SPEC 65mm Throttle
-MAPerformance REV.2 Intake Mani + MIL.SPEC 65mm Throttle

 

Got the foam core today for the wing. Might give this a go this weekend, along with the rear diffuser.

Fresh from the box, compared to my aluminum end plate part.



Top and bottom of the foam core, which will be like a sandwich around the aluminum frame, wrapped in a carbon burrito.... sounds tasty.

 

Got all the holes except the large 1" diameter one drilled through the support plates. just need to go buy a 1" drill bit....

 

Spent some quality time under the back of the car last night planning out the rear diffuser. After doing some research I realized that the diffuser is just one part of the puzzle in terms of how they create downforce. The area in front of the diffuser is also very important. The diffuser simple creates an area where the air slows down, increases pressure and then exits out the back of the car into the main wake. The downforce is actually created at the entrance to the diffuser and the area directly in front of it. The ideal situation is a totally flat bottom throughout the length of the car feeding into the diffuser. This will maximize downforce created as a result of using a diffuser. Although my car has a large flat bottom area it is not flat all the way to the rear. Mine stops at the front edge of the gas tanks, and the area around the rear diff is completely stock - which is not the ideal type of surface to be feeding directly in the diffuser.

So my first step in building the rear diffuser is getting a nice flat surface to feed into it. The exhaust makes things really difficult. If I had nothing but time I would rework the exhaust to exit out the side of the car so I would be free to do as I wished around the diff area - and I could finish the full flat bottom. But I don't have that much free time. So I'm going to build a flat panel that follows the exhaust and mounts to the rear diff and continues out a little behind the rear subframe. That's where I'll start the diffuser, and it will at least create a smooth flat surfaces fedding directly into the goodness.

Another topic is the angle of the diffuser. Some reading points to angles between 7-14 degrees as being commonly used. The reason for the range mostly based on the size of the diffuser compared to the length of the car, and the "flatness" of the bottom in front of the diffuser. Street type cars with standard bottoms tend to use 7 degrees, as the flow isn't smooth enough for higher angles. Open Wheel and Prototype race cars will use up to 14 degrees, maybe even tapering up to 20 degrees right at the bumper exit. But this requires perfectly smooth bottoms fedding the diffusers.

 

Interesting stuff.

Did you ever see this thread?

http://lancerregister.com/showthread.php?t=249675

 

^^^^ That's nice stuff.

That guy has more time than I do. And I'm just starting to get into working with composites. I could build my stuff out of carbon, but the improvement over aluminum isn't worth the cost. I might rebuild my splitter from scratch using some 3D shape some day when I'm "bored".

 

It's all over my head but thought you might like that.

Keep doin' what you doin'!

 

I worked on the wing last night and today. I got the internal frame welded together, the uprights nearly finished, and the mounting bases all tacked together. I'll finish things sometime later because I plan on working on the diffuser tomorrow.

The completed internal structure welded together.



Lining everything up, measuring adjusting etc. This took forever.



Close up of the foam core sandwich. I'm going to use this small section as my "learning" part and practice the layup of the carbon, and vacuum bagging on this guy before I do the entire wing.



I rounded the leading and trailing edge of the uprights.



I put some painters tape and paper endplates on to admire my work before it was bedtime...

 

Man this is looking good I am really excited that someone is building there own GT wing from scratch Well done man Do you think you will ever build more of these after you are done with this one and have it all tested out?