Hey guy, I was wondering if you could go into depth a little bit about the porting of your throttle body. It sounds interesting and I would like to know the procedures for it and wether or not it was difficult. I am a decent mechanic and fabricator, however I am afraid of running a grinding or cutting wheel on my throttle body.

Thanks much.

 

Wow!, first time i've seen my name in the subject line...haha

I ported the throttle body myself and it takes about 20 minutes to do. Take your TB off your truck before doing this. Go to your local hardware store and buy two paddle sanding wheels in a 3 inch size. One coarse(60) and one fine(120) grit. Put them on a regular high speed drill and insert them into the incoming side of the TB. Just port the side that is before the throttle plate. Do not make contact with the throttle plate! The rear portion of the TB around the butterfly is a "TRUE" 75mm, but the first portion leading up to the butterfly is only 66mm. (measured with a digital caliper) Because the sanding paddle is 3 inch, you do not have to push hard on it. It will apply the preasure all by it's self because it is jammed in the bore. Start with the coarse paddle and when you are close to the desired bore then switch to the fine one and polish the remainder bore. On mine when looking from the front of the truck, the 1ST 1.5 to 2 inches of the inside bore is only about 66-67mm in diameter. It then jumps down or opens up to 70mm where the throttle plat is and operates. I simply ported out that 1ST 1.5 to 2 inches in front of the throttle plate to make it a true 70MM all the way through the entire inside bore of the TB*. When your done, there will be alot of metal dust. Is what I did was wash the entire throttle body in my kitchen sink with water and dish soap and then dried it completely before bolting it back on. Hope this helps you out.

*Neal The Horsepower Freaks takes the credit on this one, its his words.*


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TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

[This message has been edited by Talleywacker (edited 04-05-2001).]

 

Sounds good! I am gonna have to try it tomorrow.

Thanks a ton!

 

yeah, its good for about 5 rwhp tops, but through the entire rpm range. even tho i have a 4.2 i felt a difference when traveling between 50-70mph and passing someone. it helps

------------------
TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

 

Talleywacker, Do you grind it from 68mm to 70mm or 75mm? 75mm is about 3 inches. You start out talking 75mm inside the throttle body but finsih by saying you take it to a true 70mm. I would like to get the 75mm from my moded cold air intake, clear through the throttle body. Just looking for a clarification. Thanks.

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2000 F150 XL supercab V6 4.2L 5-spd, 4x2, 3.55 gears, AC, Torreador Red

MODS

• X-line bedliner
• Clarion AM/FM CD head-unit.
• Ford 10 CD changer out of 94 Probe.
• Rockford Fosgate 5x7s all around.
• modified cold air airbox.
• K&N airfilter.
• glass pack muffler.
• dark tinted windows
• F150online sticker in back window.

 

take your intake off and look at the throttle body. then manually open the throttle plate and you will see what i'm talking about. the rear of the throttle body is 75mm, but the intake right before the plate is 70mm... and outer rim of the TB is like 66mm. besides the size... polishing the inside is good anyhow, it looks just like the outside of the intake manifolds, rough and unfinished.

------------------
TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

 

Talleywacker, Thanks for the clarification that’s the info I was looking for. Do you feel this mod is one a mid level home mechanic could take on? Also did you find it to be a noticeable increase in power on your truck? What are your thoughts on this? We go to the trouble of making sure we have a three-inch column of air feeding the intake end to end and at the throttle body its restricted to a max of 70mm (if we port it) so is it worth the trouble of getting the unrestricted 3 inch air column to it in the first place. Maybe someone can explain why the FIPK and AirRaids work ahead of this restriction. Maybe I am missing something?

------------------
2000 F150 XL supercab V6 4.2L 5-spd, 4x2, 3.55 gears, AC, Torreador Red

MODS

• X-line bedliner
• Clarion AM/FM CD head-unit.
• Ford 10 CD changer out of 94 Probe.
• Rockford Fosgate 5x7s all around.
• modified cold air airbox.
• K&N airfilter.
• glass pack muffler.
• dark tinted windows
• F150online sticker in back window.

 

Talleywacker, This is off topic but I see by your signature that your an overclocker too. I have a Cellery 566 running 850, and a promise Ultra 66 modded to a Fastrack 66 RAID running RAID 0. Also a 3dFX Voodoo3 2000 modded to a 3000. I hot rod PC and PU. Thanks for your comments.

------------------
2000 F150 XL supercab V6 4.2L 5-spd, 4x2, 3.55 gears, AC, Torreador Red

MODS

• X-line bedliner
• Clarion AM/FM CD head-unit.
• Ford 10 CD changer out of 94 Probe.
• Rockford Fosgate 5x7s all around.
• modified cold air airbox.
• K&N airfilter.
• glass pack muffler.
• dark tinted windows
• F150online sticker in back window.

 

I think this is a mod ANYONE can do, because i am in no way a mechanic, i don't even know how to change oil! so to answer your question... YES! Just as long as you take your time it will be ok; when i did it i had no idea what i was doing at all. as for the 3 inch from end to end... yes it is worth it even though its not a full 3 inches at the throttle body... its called marketing. now go spend the cash and get a 140mm thottle body!!!! hahaha

------------------
TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

 

ah... the memories

i too did the voodoo3 2k to 3k mod . i had mine running at 184mhz... along with my old p3 600@854 on my BE6-II.



------------------
TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

 

a paddle sanding wheel:

its just small squares of sand paper(about 1" square) to form a circle. you use it on a normal power drill, like the ones you use to screw screws into walls, or drill holes or whatnot. the sanding wheel is flexible. i don't know the brand, but i did get it at sears. look in the drill attatchments section. i wish i had a digital camera to take a pic and show you what it is.

------------------
TRUCK
White 00' XLT 4.2 Auto Sport
Regular cab Styleside
3.55 non-limited slip
Superchip
Airaid FIPK
custom ported STOCK throttle body

PC
Thunderbird 1.1ghz @ 1.33ghz
Abit KT7A-Raid
384mb Kingmax PC-150 ram
60gig IBM 75gxp RAID array
Geforce2 GTS 64mb

 

Talleywacker, did you have to really ram the 3" paddle wheel into the TB? Here I am trying to decide whether my drill is going to even turn the darn thing when I finally get it in there, or if I should just try a 2 1/2" ??? How did yours go? I also realized (after I took the TB off of the truck) that I didn't have a gasket for the TB... Neither does anyone else. I guess my truck will be out of comission until tomorrow afternoon when the gasket comes in Oh well, live and learn.

Crotteau

 

Hey All,
What exactly is this "paddle sanding wheel"? Is it like a hard 3inch grinding disc that is used on high speed air compressor grinders? Or is it a flexible sanding wheel? Could you tell me what brand/brands you are talking about? I would like to port & polish my TB also!

Thanks.

------------------
97 F150 Reg Cab Short Bed
4.2L Auto
Current Performance mods=
Accel 9000Series Race Plug Wires
Motorcraft Platinum Plugs 60 Series Heat Rating
K&N Air Filter(Modified Stock Airbox)
Flowmaster 40 Single in/out.
B&M Shift Improver Kit(highly recommend!!)
Current Musical Improvements=
California Profile3600 running two front Pioneer5x7 three way speakers and a single 10" Cerwin Vega in my homebuilt port tuned box.
Pioneer Cassette/cd control head unit with matching Pioneer 6 disc changer.
1/2 Farad Stinger cap.

My other truck is an in the works 1950 Ford pickup.

 

porting your throttle body is a complete waste of time. consider that the 5.0 mustang have a 60MM throttle body. there are 400 plus h.p. mustangs with 65 mm throttle bodies. your is 68mm ithnk that is plenty big. i had an 86 mustang gt (55mm throttle body) that stock ran 14.9 after modification i got down to 14.0 (this is back in 1988)so i thought hey replace the throttle body. guess what next time at the track no gain in e.t. or mph and i was down about $250. next project my 89 firebird, after building a stroked 350 that ran 12.8 i thought this baby has bound to need something more than the stock twin 48mm throttle body so i got a twin 52mm..same mph same e.t.
you can spend all weekend on porting and polishing and i looks like it will make a differnce but i dont think so.

 

BROTHERDAVE: I might have to agree with you, not because I have tried it and proven it wrong, but because the amount of time put into the project vs. the power gains might not equal out. It seems I may put this project on the back burner right now, and salvage the $3.20 I spent on the new throttle body gasket.

Talleywacker- thanks a ton for the info, however, as I said I might wait a while for this mod.

Crotteau