4age 20v (BT) itb dimensions

[onnaj]

Hello,

Does anybody know the exact dimensions of the 20V ITB's? I thought the BT butterflies were 45 mm? What's the distance betweens the holes of the flanges, etc etc?

Thanks

[burdickjp]

Hello,

Does anybody know the exact dimensions of the 20V ITB's? I thought the BT butterflies were 45 mm? What's the distance betweens the holes of the flanges, etc etc?

Thanks

which flange?

On the trumpet side:

Throttle opening is 50mm
Throttle openings are on a 87.5mm spacing
Hardware is M8
Hardware is on an 83mm spacing

Source:
https://drive.google.com/file/d/0B0RQCb ... sp=sharing

[Sam_Q]

If you want to be exact then the opening is about 49.5mm, everyone just uses 50mm I.D stacks though.

What do you have in mind?

[onnaj]

Thanks for all the info. It's not for me but someone else Mine is sitting on the blacktop and won't move

[Stobe]

Do you know what is the length of the intake manifold + ITB's (i mean the length of the whole assembly without the stacks)?

[burdickjp]

Do you know what is the length of the intake manifold + ITB's (i mean the length of the whole assembly without the stacks)?

This is what I had written down. Not sure if it was my measurements or copied from someone else:
Center intake valve to intake face: 115mm
Peripheral valve to intake face: 120mm
intake face to throttle face (gasket, manifold, throttle): 183.5mm

[Stobe]

Thank you!

[Stobe]

Oh, another question (sorry for hijacking the topic/off-topic). Has anyone measured the width of 20V cylinder head (and 16V head)? Which on is wider. I am just asking that because i have KP61 and i have only a block this far, and i am tring to measure how "deep" airbox i can use, before it hits the strut tower.

[Stobe]

I will start a new thread, so it is easier to find for someone looking the same info.

[onnaj]

Do you happen to have the dimensions/sizes at the engine side?