SuperMotors.net Forums
jason walker
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• federalway, WA, USA |
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• Registered on 1/8/2003 |
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• 2 posts |
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 Posted:1/28/2003 21:04 |
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 just wondering if anybody has run a performer efi intake on there broncos is it worth the money |
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John Barrett
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• West Palm Beach, FL, USA |
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• Registered on 1/31/2003 |
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• 106 posts |
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 Posted:1/31/2003 22:28 |
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I found is cheap to do but if you do not open up the EXH. side to what good is it going to do, what you do to one side do to the other, then you will see the differance is HP and Turq.
You are talking about the 5.0L right ?. |
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jason walker
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• federalway, WA, USA |
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• Registered on 1/8/2003 |
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• 2 posts |
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Posted:2/1/2003 11:39 |
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im talking about the 5.8 moter |
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BoulderBronco
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• Telluride, CO, USA |
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• Registered on 7/6/2002 |
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• 105 posts |
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Posted:2/1/2003 15:38 |
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I have been thinking of that as well. I was going to do high flow cats and then simply straight pipe it to the back when I did the intake. How much HP increase can be expected doing this?
93 Bronco,White/Green
Engine:
351W, 130 amp alternator, AGR High Pressure power steering pump, Custom K&N intakes, BroncoAir YORK on-board-air kit,
Drivetrain:
E4OD tranny, BW 1356 T-Case, 6" Superlift w/radius arms, Superlift Superrunner Steering Kit, D44 TTB front w/ARB, Warn Premium hubs, 4.88 gears, Ford 8.8 rear, custom CV driveshaft front, custom length driveshaft rear, 37" MTR's, BroncoAir Extreme Duty Winch Bumper, Warn M12000 winch,
Other: Lund Moon Visor, Tinted windows, PIAA 90Series fog/driving lights, full size spare, Uniden CB, kick ass stereo, Alpine MP3 head unit, CD/MP3 Changer, Orion amps, Boston 12" subs, MBQuart components.
Future: D60 front w/ custom coils, Sterling 10.25" rear, ARB's and 4.88's, full Bassani Exhaust/Header system, hopefully a supercharger but ya know it's all about the $$$$$$$$$
I am also the owner of BroncoAir
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John Barrett
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• West Palm Beach, FL, USA |
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• Registered on 1/31/2003 |
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• 106 posts |
• 1
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Posted:2/1/2003 16:26 |
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| Quote: | | im talking about the 5.8 moter |
Yes it will increase the HP and Turq, Not as much as most think, (is it worth it)- Not by itself, Why - If you take the EXH. off and look up inside you will see some knobs in the runners of the heads, you need to remove then (Use a stone with die grinder - Also before you start doing that, put some rags or paper up in there), this will open up your EXH. a lot, then if you can upgrade your EXH. at you own time, Will increase HP and Turq. a lot.
If you got stock heads that is (Above).
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BoulderBronco
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• Telluride, CO, USA |
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• Registered on 7/6/2002 |
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• 105 posts |
• 2
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Posted:2/1/2003 16:55 |
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I do not know much about the internals of the engine. What is EXH? I thought it was exhaust but now am not sure. What do these "knobs" do? You are talking about the heads and not the exhaust right? Thanks for the info and help.
93 Bronco,White/Green
Engine:
351W, 130 amp alternator, AGR High Pressure power steering pump, Custom K&N intakes, BroncoAir YORK on-board-air kit,
Drivetrain:
E4OD tranny, BW 1356 T-Case, 6" Superlift w/radius arms, Superlift Superrunner Steering Kit, D44 TTB front w/ARB, Warn Premium hubs, 4.88 gears, Ford 8.8 rear, custom CV driveshaft front, custom length driveshaft rear, 37" MTR's, BroncoAir Extreme Duty Winch Bumper, Warn M12000 winch,
Other: Lund Moon Visor, Tinted windows, PIAA 90Series fog/driving lights, full size spare, Uniden CB, kick ass stereo, Alpine MP3 head unit, CD/MP3 Changer, Orion amps, Boston 12" subs, MBQuart components.
Future: D60 front w/ custom coils, Sterling 10.25" rear, ARB's and 4.88's, full Bassani Exhaust/Header system, hopefully a supercharger but ya know it's all about the $$$$$$$$$
I am also the owner of BroncoAir
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John Barrett
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• West Palm Beach, FL, USA |
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• Registered on 1/31/2003 |
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• 106 posts |
• 1
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Posted:2/2/2003 08:43 |
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| Quote: | | I do not know much about the internals of the engine. What is EXH? I thought it was exhaust but now am not sure. What do these "knobs" do? You are talking about the heads and not the exhaust right? Thanks for the info and help. |
I am talking about the heads, yes.
In the Exhaust or (EXH.) ports.
They was in the casting of the heads, yes.
Why and What are they are they for, Emissions - enabled Ford to meet the Emissions, Some years ago they used them to make more back pressure too, Depends on what you are trying to do.
Now if you take them out, you will not get much more (In Emissions), But you will increase HP & Turq.
These obstructions in each Exhaust Port is removed giving you more air flow out.
Now if you go to a aftermarket intake increasing you air flow in, you see a differance (Big Differance), The Flow in can get out.
Sorry about the (EXH. = Exhaust) or (INT. = Intake).
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John Barrett
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• West Palm Beach, FL, USA |
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• Registered on 1/31/2003 |
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• 106 posts |
• 1
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Posted:2/2/2003 11:10 |
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| Quote: | | I have been thinking of that as well. I was going to do high flow cats and then simply straight pipe it to the back when I did the intake. How much HP increase can be expected doing this? |
I have done this many times, the HP & Turq. increase has been on the + side of what Edelbrock States in there books, easy.
Just remember, what you do to one side INT. you must do to the other side EXH.
Remember too, on the EXH. pipe you can go two differant ways and more from what I know, Some like to go down (Down size the EXH. pipe to 2 1/4")to put the Turq. in a range that would be ok for a truck that hits the mud or other things.
I do not like this -
1. You are stopping Flow (So you decreasing HP over the length of the pipe, which also decreases Turq.), yes you put the turq. where you want it but you are killing the motor.
If you can it would be NICE, to let the motor breath, by going to 2 1/2" EXH. pipe, and if you can go with 1 3/4"-step to 1 7/8"-to 2 1/2" colectors (Headers), you can get the colectors up to 3 1/2", depends on....., Now Control the back pressure with the Muffler you get, A Muffler shop should be able to help here or find one that should know what they are doing, Not all Mufflers create the same back pressures.
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BoulderBronco
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• Telluride, CO, USA |
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• Registered on 7/6/2002 |
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• 105 posts |
• 2
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Posted:2/6/2003 20:26 |
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So you are saying that I shouldn't just straight pipe it? I figured no muffler would let it breathe that much better.
93 Bronco,White/Green
Engine:
351W, 130 amp alternator, AGR High Pressure power steering pump, Custom K&N intakes, BroncoAir YORK on-board-air kit,
Drivetrain:
E4OD tranny, BW 1356 T-Case, 6" Superlift w/radius arms, Superlift Superrunner Steering Kit, D44 TTB front w/ARB, Warn Premium hubs, 4.88 gears, Ford 8.8 rear, custom CV driveshaft front, custom length driveshaft rear, 37" MTR's, BroncoAir Extreme Duty Winch Bumper, Warn M12000 winch,
Other: Lund Moon Visor, Tinted windows, PIAA 90Series fog/driving lights, full size spare, Uniden CB, kick ass stereo, Alpine MP3 head unit, CD/MP3 Changer, Orion amps, Boston 12" subs, MBQuart components.
Future: D60 front w/ custom coils, Sterling 10.25" rear, ARB's and 4.88's, full Bassani Exhaust/Header system, hopefully a supercharger but ya know it's all about the $$$$$$$$$
I am also the owner of BroncoAir
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John Barrett
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• West Palm Beach, FL, USA |
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• Registered on 1/31/2003 |
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• 106 posts |
• 1
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Posted:5/30/2003 00:39 |
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| Quote: | | So you are saying that I shouldn't just straight pipe it? I figured no muffler would let it breathe that much better. |
Laughing, Yea you will get some with straight pipe and add more with the removal of them little knobs in the EXT. Ports.
Now if you have to run on the street, you have to put a muffler on, and doing the above will help out a lot, even with staight pipes with mufflers & turn downs.
Just two 351W motors I built, one for a Mustang and the other for a Bronco.
First Motor - 5.8L or 351W Sportman Block 9.200" Deck Height - O-Ringed, 4.000" Crank, 6.125" Con Rods, 1.078" Piston Compression Height - 0.030" over bore - (Gas Ported) -20cc Reverse Dome, 10.4:1 Compression Ratio, Solid Roller Cam, Made a 408cid, all motor 550HP +, with NOS Well over 700HP +, Lunati All Forged 1000+ HP (Crank, Rods & Pistons), Runs on pump gas 93 octane, Fuel Cell for NOS has 110 Octane, AFR 205 Pro Ported (2.08" INT., 1.60" EXT.), Street Driven Daily, Weekend Racing & Mudding, Installed into a 90 Bronco, Edelbrock Super Victor 9.200" intake made into a EFI with 1000CFM Holley Thottle Body.
Second Motor - 5.8L or 351W Sportman Block 9.500" Deck Height - O-Ringed, 4.000" Crank, 6.250" Con Rods, 1.250" Piston Compression Height - 0.030" over bore - (Gas Ported) -19cc Reverse Dome, 10.4:1 Compression Ratio, Solid Roller Cam, Made another 408cid, 600HP + all motor, 950HP with NOS, Lunati All Forged 1000+ HP (Crank, Rods & Pistons), Runs on pump gas 93 octane, Fuel Cell for NOS has 110 octane, AFR 205 Pro Ported (2.08" INT., 1.60" EXT.), Street Driven Daily & Weekend Racing, Installed in a 95 Mustang Cobra, Edelbrock Super Victor 9.500" intake made into a EFI with 1000CFM Holley Thottle Body.
Now for a stock 351W motor this is what I did on the EXT. Side, (Motor Stock) - Step Down Long tube heades 1 3/4" to 1 7/8" to a 3" Collector (Collectors Have O2 Sensor fittings but you will have to extend the O2 wires), use dual straight EXT. Pipes 3", 3" Flowmaster Mufflers then just put some turn downs on the mufflers.
Now before you install this - grind out them knobs in each of them EXT. ports, what this will do is open up the EXT. side (more HP) and with the mufflers on there (keeps back pressure there for your Turq.), Now later on you can open up the intake side (With a aftermarket intake) and see bigger HP & Turq. increases, This will handle any amount of air/fuel you can put though the intake later on down the road.
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