4.6 supercharged
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4.6 supercharged
recently baught a 4.6L 98 ford and i was looking at supercharging it.
has anyone on here done this?
i was looking at the kenne bell with 9 psi and 4.11s will that push me into the 14s?
has anyone on here done this?
i was looking at the kenne bell with 9 psi and 4.11s will that push me into the 14s?
Post Fiend
Joined: May 2006
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From: Central Florida
The mustang guys will have a wealth of info on it. I prefer modularfords for my power info, give them a look.
I also prefer the whipple lysholm style screw charger, but either way with an intercooler you'll make good power. A couple of things to consider, your truck is a 98 and I would guess 100K miles. You have alot of miles for that much boost, and probibly 9.0:1 compression. If you get serious about it, look into a forged crank and pistons, honing and a fresh set of rings and seals all around.
I also prefer the whipple lysholm style screw charger, but either way with an intercooler you'll make good power. A couple of things to consider, your truck is a 98 and I would guess 100K miles. You have alot of miles for that much boost, and probibly 9.0:1 compression. If you get serious about it, look into a forged crank and pistons, honing and a fresh set of rings and seals all around.
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I put my Procharger on my 97 Expy when it had 100K miles.
I have well over 130K miles now, tow a 7,000 lb. boat regularly, and she runs great.
I do have the 5.4, not the 4.6.
I see 10.5 psi and have had zero problems. All cylinders have good compression.
I'd get a compression test, and if all is good then I wouldn't worry about it. These motors are pretty strong. I know several guys with high-mile, blown and turbocharged 4.6L F-150s. Be smart and make sure your tune is good.
Centrifugals are a bit easier on your engine, less boost at low RPM.
I have well over 130K miles now, tow a 7,000 lb. boat regularly, and she runs great.
I do have the 5.4, not the 4.6.
I see 10.5 psi and have had zero problems. All cylinders have good compression.
I'd get a compression test, and if all is good then I wouldn't worry about it. These motors are pretty strong. I know several guys with high-mile, blown and turbocharged 4.6L F-150s. Be smart and make sure your tune is good.
Centrifugals are a bit easier on your engine, less boost at low RPM.
Postmaster
Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
Originally Posted by pronstar
Centrifugals are a bit easier on your engine, less boost at low RPM.
-Kerry
Elder User
Joined: Jan 2006
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Originally Posted by kspilkinton
Pronstar likes his centrifugal because he pulls boats off of slick ramps - so no overbearing torque spinning him out.
-Kerry
-Kerry
I my case, the strength of a roots/twin-screw (huge low-end torque) are disadvantages when confronted with a slick launch ramp.
Though 4.10 gears aren't helping me out either...LSD is your friend!
More Turbo
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From: Alexandria, Ohio
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Joined: Jul 2004
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A bit of misinformation is being thrown about in this thread.
The 4.6L 2v bottom end is very weak when it comes to boost. You are dealing with a bomb waiting to happen if you have a stock bottom end.
The rods and rod bearings will let go.
Forged rods are a must if you want to get serious with boost. The crank is not the weak point.
The 4.6L 2v bottom end is very weak when it comes to boost. You are dealing with a bomb waiting to happen if you have a stock bottom end.
The rods and rod bearings will let go.
Forged rods are a must if you want to get serious with boost. The crank is not the weak point.
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Post Fiend
Joined: May 2006
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From: Central Florida
Heck, I knew a guy that put 60K on an expedition and ran 12lbs of boost. It was a heck of toy until it got off the highway. While true forged is suposed to be better for high boost motors, 4-6 psi should be fine on stock internals.
Postmaster
Joined: Jul 2001
Posts: 4,038
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From: South Kitsap County, WA
Any engine has the potential of blowing up on you... it's all in how you treat it.
If the bottom end was so weak, kits wouldn't have even been produced - many of these kits have install warranties if installed by a mechanic or shop who has a license/cert from the charger kit manufacturer.
-Kerry
If the bottom end was so weak, kits wouldn't have even been produced - many of these kits have install warranties if installed by a mechanic or shop who has a license/cert from the charger kit manufacturer.
-Kerry
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