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Not sure if this has been covered before, but I figured I'd look at what improvements could be made to the stock 2.5L throttle body. The stock unit is pretty precise for a mass produced item but the fit & finish of the individual parts can be improved once taken apart. Areas I found for improvement are shown below:  1) The screw heads can be flattened and rounded to a smooth edge.  2) The screws length was trimmed so that they didn't hang out past the shaft and the shaft was filed flat on the half-round side.  2) The brass butterfly was thinned to about 1/2 it's original thickness. This is totally free mod and although it's not real scientific, the butt-dyno tells me this was totally worth the 2 hours + 1 six pack to do it. A noticable improvement in the ability of the engine to gulp air. The secondary opening is more pronounced and the RPMs build quicker and quicker as the RPMs climb to red line. Tomorrow: Optimization Stage II. (I'm on vacation, and it beats the heck out of yard work! :D)
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Joined: May 2001
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OK now I must try this homemade mod, can't believe I haven't thought about that before because I did that to my Mustang. Thanks for the reminder....
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Joined: Sep 2000
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I think it's a good mod myself. Considering I too did it.  This is also a good time to match the mounting port on the upper manifold.
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Joined: Nov 2000
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My 65mm TB (from a 98 GT) is on its way, for $65. That'll help! I may try smoothing that baby out when I get it.
Regards, Anastazi Father of the Aussie Bar anastazi.sarigiannis@aam.com"Computer games don't affect kids. I mean if Pacman affected us as kids, we'd all run around in a darkened room, munching pills and listening to repetitive music." ----------------------------------- 2000 Silver Frost SVT #1126 of 2150 8" AFE/"Big-Mouth" Intake, Modified BAT Pipe, IAT Mod - A'PEXi S-AFC, Superchip, No Secondaries, Cobra/CSVT Hybrid MAF, Magnaflow True Duals, MYSTERY Mod, Autolite AWSF22FS's and FMS Wires, ES MM Inserts, Cross Drilled/Slotted Rotors w/ Greenstuffs, APR DTM Spoiler, Escort Cossie Vents, NACA Duct, Mirko Splitter, Koni's & H&R Springs, 24mm "Aussie" Sway Bar, 18" Enkei RS-5, 225/40R18 KDW-2's. Pioneer DEH-P7000R, TS-6975's, TS-6855's, MTX BE104, MTX Blue Thunder PRO502 http://www.geocities.com/qikslvrsvt
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Joined: Jan 2001
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6 beers in 2 hours huh..doesn't that constitute as being drunk
joshua_drew@hotmail.com
AIM "nerdsalot2"
*************************
1998.5 Black Contour SVT
1998 ZJ Limited 4.0L AWD
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Joined: Jun 2000
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The SVT TB can even get better results on this mod as they have another half of the butterfly bar on the front side that can be removed for better flow as well as the other things you mentioned. I've done this several times to other local Contours, all noticing high RPM freedom. After you know what you're doing, you can do it in under 3-4 beers (half hour to 45 mintues sipping).
Brad Noon '99 SE MTX 3 point oh my God H.O. 179HP/178TQ BNMotorsports Floormats, powder coating, TB optimizing, Gutted cats, etc BNMotorsports is now the preferred distributor of Contour/SVT/Mystique Indiglo style gauges!!!bnmotorsports@msn.com
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Joined: Aug 2000
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Proud former owner of.....
'99 svt - silver/blue - #2555 of 2760
Proud new owner of...
'02 BMW 330i
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Joined: May 2000
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So what do you use to flaten this out? I don't imagine you would use a file as that would cause a rough edge.
Mike
'95 SE, ATX, KKM
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Joined: Mar 2001
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Yeah this sounds good. What tools are required, and could you elaborate a bit on this? Post it here or email me @ thecontourguy@aol.com Thanks! And keep the mods comin!
Dan Parmelee
1999 Acura Integra SiR-G coupe
"I heard Affleck was the bomb in Phantoms"
"Word, bitch! Phantoms like a muhfuka"
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