Ported throttle body
Tourer
Joined: Mar 2010
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From: NW Ohio
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Road Warrior
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From: SC
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Intermediate
Joined: Sep 2012
Posts: 28
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From: So. NH
Not really sure how to tell what it's ported to but by measuring it with calipers the filter side is 55mm and the motor side is 44mm.
I know it was ported and it was done by a professional shop.
I know it was ported and it was done by a professional shop.
Road Warrior
Joined: Nov 2009
Posts: 1,444
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From: SC
The size should be measured at the flap, the filter opening is probably larger and narrows down to the flap. I have a 58, the opening at the filter is little more than 63mm so that's a difference of 5. If you have 55 at the opening your probably at 50 at the flap, so that would mean you have a 50mm TB not a 55. I don't think the 46mm which is the original size on a 06, can be milled out to a 55. I think they can only go to around 51mm, which would make it accurate to say you have a 50 or possibly 51mm TB.
To really know you can take the flap out and measure it for accuracy of what you have.
To really know you can take the flap out and measure it for accuracy of what you have.