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#1 |
Registered Member
Join Date: Mar 2003
Location: south florida
Posts: 45
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![]() Guys, if you haven't opened up the upper intake plenum on your 4.6 engines you gotta get it done! There is a whole lot of room left in there and the walls are rougher than pavement! You will notice a difference.
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2000 GT Coupe Automatic! CAI, X-Pipe, Eibach Pro, 100 Shot NOS Best run: 12.187 @112.9 w/ 1.75 60ft. 3ft Above Sea evel |
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#2 |
Registered Member
Join Date: Dec 2002
Location: Philadelphia PA
Posts: 143
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![]() What did you do to yours? Sand them?
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2000 GT 80mm Pro-M mass air, 24lb injectors, 75mm BBK T/B, K&N Filter Cold Air, 1/2" Phenolic intake spacer, Underdrive Pulleys, Dyno Tuned Autologic Chip, FMS Shorty Headers, Mac Prochamber 2 1/2" Off Road H pipe, 2 Chamber Flowmasters, Steeda lowering springs. Steeda Tri-Ax Short Throw shifter, Steeda Power slot rotors w/ Hawk Pro pads, 3.73 FRP Gears. Headwork and Comp cams install in progress. |
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#3 |
Registered Member
Join Date: Feb 2002
Location: Maryville,TN
Posts: 415
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![]() While polishing mine for looks ( the outside ) i noticed how rough it was on the inside. I used a die grinder with a sanding wheel with 80 grit and sanded/ported the walls down smooth. then went to finer grit to get a polished finish. It opened it up quite a bit and had to help air flow. It took all of an hour to remove port and replace. I'm sure I could have opened it up even more but I got to where I felt comfortable and left it at that. Also added an intake spacer while I was at it.
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98 GT / convertable -98 Saleen engine, Saleen appearance pkg. SHM cams,P&P NPI heads, and so much more! |
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#4 |
Registered Member
Join Date: Jul 2002
Location: Michigan
Posts: 417
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![]() Anyone in Michigan wanna do mine for me and make some money?? heheh
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1996 Mustang GT, AODE -Trickflow Upper Plenum -BBK 70mm Throttlebody -02 PI Lower Intake -March Pulleys -BBK H-Pipe -2 Chamber Flowmaster mufflers -3000 RPM Stall -JLT CAI with special K&N -MSD Supercondutor wires -180 stat -FRPP 4:10's *FOR SALE C&L TRUE FLOW INLET PIPE WITH K&N* My Stang |
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#5 |
Registered Member
Join Date: Apr 2002
Location: racine ,wi
Posts: 691
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![]() I was thinking of doing this for awhile I just have 1 ?? it the gasket for the upper reusable or do I need to get a new one
thanks for any help tony
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RUN IT STAIGHT AND RUN IT HARD ________ Novi 2000 60' 1.46 1/4 10.67 mph 126.5 _________ |
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#6 |
Registered Member
Join Date: Feb 2002
Location: Maryville,TN
Posts: 415
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![]() It's reusable, just a paper gasket. This is super easy! If you have the right tools. I used an air die grinder, you can rent one cheap or use a electric one. A drill won't get you enough RPMs. use the sanding wheel that looks like sandpaper squares glued to a bit. some call it a flapper wheel. Mine had sanpaper with scruber pad inbetween the sheets of sandpaper. Works wonders!
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98 GT / convertable -98 Saleen engine, Saleen appearance pkg. SHM cams,P&P NPI heads, and so much more! |
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#7 |
Registered Member
Join Date: Dec 2002
Location: Philadelphia PA
Posts: 143
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![]() Actually, I just spoke to the shop who tunes my, and many other stangs, about this. He said there was absolutely no power gain or change in power curves on the dyno's from doing this. Also, take too much off the inside and the heat can cause the plastic to crack if there is a weakened wall. This worked well with carbuerated motors. If the walls from the intake were rough, it would cause the fuel and air to seperate. Hope this saves some of you from wasting your time, and or money.
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2000 GT 80mm Pro-M mass air, 24lb injectors, 75mm BBK T/B, K&N Filter Cold Air, 1/2" Phenolic intake spacer, Underdrive Pulleys, Dyno Tuned Autologic Chip, FMS Shorty Headers, Mac Prochamber 2 1/2" Off Road H pipe, 2 Chamber Flowmasters, Steeda lowering springs. Steeda Tri-Ax Short Throw shifter, Steeda Power slot rotors w/ Hawk Pro pads, 3.73 FRP Gears. Headwork and Comp cams install in progress. |
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#8 |
Registered Member
Join Date: Mar 2003
Location: south florida
Posts: 45
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![]() What plastic are you talking about? The upper plenum is made of aluminum.....
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2000 GT Coupe Automatic! CAI, X-Pipe, Eibach Pro, 100 Shot NOS Best run: 12.187 @112.9 w/ 1.75 60ft. 3ft Above Sea evel |
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#9 |
Registered Member
Join Date: Dec 2002
Location: Philadelphia PA
Posts: 143
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![]() I was talking about the lower one. People have tried porting it and they wound up cracking.
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2000 GT 80mm Pro-M mass air, 24lb injectors, 75mm BBK T/B, K&N Filter Cold Air, 1/2" Phenolic intake spacer, Underdrive Pulleys, Dyno Tuned Autologic Chip, FMS Shorty Headers, Mac Prochamber 2 1/2" Off Road H pipe, 2 Chamber Flowmasters, Steeda lowering springs. Steeda Tri-Ax Short Throw shifter, Steeda Power slot rotors w/ Hawk Pro pads, 3.73 FRP Gears. Headwork and Comp cams install in progress. |
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#10 |
Registered Member
Join Date: Apr 2003
Location: West Plains
Posts: 74
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![]() As far as this not producing any horsepower, MM&FF dynoed the ported intake vs. stock and got roughly 10 hp &14 lb/ft in May I think.
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Slower Traffic Keep Right |
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#11 |
Registered Member
Join Date: Oct 2002
Location: Utah
Posts: 58
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![]() Unfortunately, no one in the "real world" seems to have done this and dynoed afterward. I've read several posts on this but no one can give us numbers. No offense to anyone associated with the article, but until I read it from more reliable sources (not the butt-o-meter), it doesn't seem like a worthwhile mod.
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#12 | |
Drag Racer!
Join Date: Nov 1999
Location: Lake Worth, FL USA
Posts: 757
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![]() Quote:
http://www.modulardepot.com/articles.php?aid=5 Bill
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2000 GT VRS O/R X, Dynomax Bullets, Steeda Pulleys, Pro-M 80MM, 4.30s, UPR Pro Series Suspension, UPR Tubular K-member, MAC Longtubes, Bullitt Intake, TKO, VT Engine Stage 1 NA Cams, SCT Tune. 285 RWHP/296 RWTQ 11.97 @ 113.20 M/M 100, 7085 www.uprproducts.com www.ponyexpressperformance.com www.modulardepot.com |
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#13 |
Registered Member
Join Date: Oct 2002
Location: Utah
Posts: 58
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![]() I stand corrected. Thanks Bill. I know I can always rely on you to provide us with new and correct information. I guess it's not a bad idea, especially those that are good with a dremel. Approximately 3 rwhp isn't bad for the time, or price if someone else does it. That's about half the price of a CAI for the same gains.
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#14 |
Registered Member
Join Date: Jul 2002
Location: Michigan
Posts: 417
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![]() I have the drill bit to port and polish but all I have is an electric drill, is that powerful enough?????
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1996 Mustang GT, AODE -Trickflow Upper Plenum -BBK 70mm Throttlebody -02 PI Lower Intake -March Pulleys -BBK H-Pipe -2 Chamber Flowmaster mufflers -3000 RPM Stall -JLT CAI with special K&N -MSD Supercondutor wires -180 stat -FRPP 4:10's *FOR SALE C&L TRUE FLOW INLET PIPE WITH K&N* My Stang |
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#15 |
Registered Member
Join Date: Apr 2002
Location: Atlanta, GA
Posts: 2,325
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![]() DO NOT do this mod on a Supercharged car. I've seen first had dyno losses with the mod.
Just a note....
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1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60' 1995 Honda VFR750 - not much @ really fast (actual data pending.) 1964.5 Mustang 289 Rice Haters Club Member #13 |
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