how to tell....
07-19-2006, 01:43 PM
#2
Registered User
Join Date: May 2003
Location: Farmington, MI
Posts: 1,747
Re: how to tell....
They look different than stock. Now, if someone modified stock parts (i.e. home port the tb or descreen the maf), you can't tell unless you take it apart and peak inside. Most companies like to put their brand on their products though. If you have a BBK throttle body or an SLP MAF, it'll be obvious.
07-19-2006, 02:38 PM
#3
Registered User
Join Date: Sep 1998
Location: US 1 Mile Marker 52 in the Florida Keys
Posts: 8,323
Re: how to tell....
stock on the left...75mm wide...and aftermarket 85mm unit on the right
here is my ported TB...you can see a smooth transition from the sloped front, to just a flat inner bore. there is typically a lip just in front of the blade (when closed).
here is a drawing i did on how it helps...it may explain it better
here is my ported TB...you can see a smooth transition from the sloped front, to just a flat inner bore. there is typically a lip just in front of the blade (when closed).
here is a drawing i did on how it helps...it may explain it better
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