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Discussion Starter #1
Well... I decided to build a new intake system for my turbo 3.0. At this time I am going to use Individual Throttle Bodies ( ITB) from 2004 BMW bike k1200GT. The throttle bodies are 38mm in bore which should be good enough to supply each cylinder with enough air.
I just paid 39$ shipped (good deal) for four throttle bodies from ebay and will be looking for another set.
I am going to use Probe_Racer's lower intake manifold that he gave me for free- Big thank you to Manuel.
I will be cutting and fabricating and will be posting pictures. Stay tuned.

Throttle bodies

OEM lower intake

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For simplicity, I would use a single throttle body. (Mustang is a good alternate, with larger aftermarket TB's on the market.)
Fewer parts and connections to fail. No need to synchronize the throttle bodies, and the existing idle control circuit can be used. (This is more difficult with ITB's.)
 

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sounds like an awesome project
 

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Discussion Starter #4
For simplicity, I would use a single throttle body. (Mustang is a good alternate, with larger aftermarket TB's on the market.)
Fewer parts and connections to fail. No need to synchronize the throttle bodies, and the existing idle control circuit can be used. (This is more difficult with ITB's.)
I am sure you have not seen my setup. :D:D
 

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Discussion Starter #5
Finally had a chance to work on my project. First thing is to clean this manifold and then mark the areas where I am going to cut.
Also, ended up getting a good deal on TWO SETS of 42mm ITBs for $80 shipped. I will be trying to see which size will work better. The space is very limited and I can not really change many things. Stay tuned.

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Man you are crazy - awesome project though! I will be closely following!!!!
 

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Discussion Starter #11
How do you plan on keeping everything from warping with all that welding. Are you planning on stress relieving the manifold after?
Sorry for the late response. You just asked a great question. I am going to have both head acting as a jig tool that will prevent everything from warping.
I will be asking my guy who is going to do welding to tack everything up first, let it cool off and then continue little by little. I will be welding a 1/4 plate first and then drill the holes for the ITBs.
 

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Discussion Starter #12
Alright girls, time to update! It took 3-4 weeks to get a set of VELOSITY STACKS. Got them from Australia for $259 shipped.
Also, picked up some 45 degree bent pipes to build the lower part of the intake where the ITB will be sitting on.


 

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Discussion Starter #13
As you can see, I ended up removing the OEM injector bungs. The reason I did that--NO space. The space is very tight. The ITBs already came with the injector bungs and I decided to use them.






 

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Will the injectors be aimed directly at the back side of the intake valves and close to the same distance from the intake valves in their new location?
 

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Discussion Starter #16
Will the injectors be aimed directly at the back side of the intake valves and close to the same distance from the intake valves in their new location?
Correct. The injector points directly to the back side of the intake valve. The distance is a bit longer. I am using 575cc injectors.
 

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Discussion Starter #17
let's see more porn.
Here is my mini shop... yes, I am building it in my bedroom.
Dry test fit the ITBs, so far so good. Will be building a new fuel rails.
Stay tuned.







 
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supercharged3.0
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