After looking at some throttle bodies for our cars I saw on ebay a 55mm with half shaft mod so I found out all common options we have for how much of an area we have and % increase over stock. I did it with the 49 being our stock size because of the taper on it. First number is area in mm. second is % increase.
7078.54 Stock 7235.34 2.22% stock with shaft mod 8001.76 13.04% 52mm 8173.36 15.47% 52mm with shaft mod 8981.50 26.88% 55mm 9157.50 29.37% 55mm with shaft mod 10740 51.73 60mm 10932 54.44% 60mm with shaft mod
#136733, "RE: Throttle body findings" In response to Reply # 0
Holy shit I have a 51% increase. AND my Intake is bored to 60 and ported and polished. AIRFLOW!!!11!
95 Eclipse GS: 10.5:1, Crower 2's and MSII 186 WHP - 150 WTQ 14.697 @ 93.85 MPH......Gone, but not forgotten 99 420A Avenger: Given to my sister 99 GS OZ: Sold 03 Evo 8: Family Car with balls
#136736, "RE: Throttle body findings" In response to Reply # 3
Originally posted by SilvrEclips Whats the max the stock TB can be bored to? I know there are a lot of 55mm out there but maybe it can be bored to 60mm
57mm.
And exactly what is the shaft mod? Is it already done on the MPx?
97 Talon ESi 14.943@91.35MPH N/A! "If you need someone to provide an itemized build of materials and a flowchart to walk you through every build-related question you will need to answer at each step of the process, you shouldn't be playing with cars. "-Driggs
#136740, "RE: Throttle body findings" In response to Reply # 5
The wall thickness of ours at 57 must be like paper! But yea you cut the top half of the shaft that doesn't have threads and the head of the bolts will sit on the throttle plate. Nothing noticeable but a little increase.
97 Talon ESi 14.943@91.35MPH N/A! "If you need someone to provide an itemized build of materials and a flowchart to walk you through every build-related question you will need to answer at each step of the process, you shouldn't be playing with cars. "-Driggs
#136760, "RE: Throttle body findings" In response to Reply # 8 May-10-12 02:32 PM by Fotowntalon
All this shaft modding talk and no one has brought up knife edging the butterfly plate?
Talked to my boss for about 10 minutes on this (one of the benefits on working for a performance company) And for aerodynamics, you don't want a sharp edge on the leading edge, you want it smooth and circular circular on the leading edge, and on the knife on the trailing edge. I'll be giving this a shot while attempting my half shaft mod.
97 Talon ESi 14.943@91.35MPH N/A! "If you need someone to provide an itemized build of materials and a flowchart to walk you through every build-related question you will need to answer at each step of the process, you shouldn't be playing with cars. "-Driggs
#136811, "RE: Throttle body findings" In response to Reply # 10
Almost think of looking at a comet or you got the smooth circular head, and the trailing edge that falls to a point.
97 Talon ESi 14.943@91.35MPH N/A! "If you need someone to provide an itemized build of materials and a flowchart to walk you through every build-related question you will need to answer at each step of the process, you shouldn't be playing with cars. "-Driggs
#136744, "RE: Throttle body findings" In response to Reply # 0
Originally posted by Dstach After looking at some throttle bodies for our cars I saw on ebay a 55mm with half shaft mod so I found out all common options we have for how much of an area we have and % increase over stock. I did it with the 49 being our stock size because of the taper on it. First number is area in mm. second is % increase. 7078.54 Stock 7235.34 2.22% stock with shaft mod 8001.76 13.04% 52mm 8173.36 15.47% 52mm with shaft mod 8981.50 26.88% 55mm 9157.50 29.37% 55mm with shaft mod 10740 51.73 60mm 10932 54.44% 60mm with shaft mod
Next time just throw this in your existing thread.
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97 Talon ESi 14.943@91.35MPH N/A!
