Can someone tell me the basic dimensions of the TB flange? I'm looking for the distance from one mounting hole to the next and the size of the bores in the body. And maybe a pic of the bottom and top of the TB would also help if anyone would be so kind. Thanks.

 

I got some pics for ya I'm not sure what measurements you want

front

 

top

 

bottom

 

Thanks for the pics. I basically would need to know where to drill holes in a solid plate to mount the TB.

What's with the two sets of butterflies on the secondary side? I wish I just had a TB to look at.

 

the two sets are so the secondaries can be cut off outside of the primary throttle linkage. (for cold start)

I'm also interested in the equivalent size of the TB in a round single butterfly...

 

Do you need pics of the back side where it mounts to the dynamic chamber (4 holes)...?

I can take pics and get you all the measurements you need, this is the stock TB from an S4, I also have a modded S4 TB (port and polished) If you need pics of that.

There are some in depth pics at
Thanks Ted

 

That's exactly what I'm looking for, plus the "bolt pattern" of those four holes (ie. 4x5 inches or something).

 

One set of studs is two and thirteen sixteenths from center to center. The other set is three and three quarters from center to center. The center of the top set is four and one sixteenth , from the center of the bottom set.

 

heres what I got the measurments are from the center of the holes.

 

seveninphilly.......your figures are more accurate. The pattern was designed in cm's not inches. That said, I bet he uses a drill bit thats not in cm's. humor.

 

wow that thing is dirty!

 

Yeah thats 190,xxx miles of filth

All cleaned ported and polished now mmmmm!

 

yummy!! ported !!!!! i like!! u have a pic of it ported? did u do it with a dremel and a drill?? if so i know im doing it soon!

 

Here is the port and polished one. The more I look at it I probly could have spent more time on it but it was my first try. I was in a hurry to see the difference as well as the car is my daily driver.

 

PERFECT! Thanks a lot guys! Special thanks to seveninphilly!