What's that orange stuff on the engine pulleys, etc?

 

Well,,since everybody wants to contradict each other.

Isn't your 99 a 4.6?
The 4.6 got PI heads in 00 or 01 I think.
5.4 should be PI in 99

Phil

 

ALL 5four 99 + are P-Improved

BTW - Here's the skinny (Neal is correct)

1999 Windsor with PI Heads

The Windsor pistons were changed in 1999 when the "power improved" (PI) heads with the square intake ports and smaller heart-shaped chambers were introduced. The size of the bowl was increased from 10.5 cc to 18.5 cc to make up for the difference in the chamber size and still maintain the same compression ratio. This piston still had the 1.5 mm/1.5 mm/3.0 mm ring pack with the shallow top groove and circlips to hold the pin in place.

DATA - http://www.babcox.com/editorial/ar/eb40228.htm

 

Ho hum.
Surf on over to the Trick Flow site and have a look at the new mod heads. 240 untouched out of the box!

 

I didn't catch those heads over there -

Did you see this - http://www.mustang50magazine.com/tec...bow/index.html

 

Back when I was a young man and we were finishing up rounding up the indians and putting them on reservations, Ford came out with a Y block engine. It was available with PI heads. PI stood for Police Interceptor meaning it was a performance part for Police service. It's amazing how over the years the same initials stand for something different yet the same part. Take todays double hump heads for GM. What moron came up with that? When they came out, they were Power Pack heads. Todays V heads were Fuel Injection heads. What's next, are we going to call a cam a bumper rod?

 

Old man in rocking chair w/laptop ^^^^

Police Interceptor Engine Specs

Those cars come with 215-220 HP Motors but the cars weight 6,000 lbs. Police interceptor package includes:
Silicone coolant hoses (direct swap)
High output alternator (direct swap for stereo)
3:55's-3:73's optional in the rear (will work 8.8 rear)
Heavy duty sway bars front and rear (won't fit)
Higher rate springs (won't fit)
true dual exaust (won't fit)
No posi or trac loc
Heavy duty shocks and struts (won't fit)
Addition of ignition posts and constant posts located in right kick panel
Mercury switch activated flashers in trunk
Transmission cooler (Can fit)
3 core radiator (will fit)
Ready to install light bar cable in roof headliner and junk like that.
A slightly tuned from stock motor with the intake facing to the drivers side instead of the passenger side

I don't think PI had anything to do with the interceptor, other than having PI heads at the same time the 4six Mustang got them. - Which is the same time the 5four's in our trucks got them. The 4.6L truck motors didn't receive PI's until 2001, but were interchangeable from 97. These heads could bolt directly to a 97 + 4six truck motor's. With a tune, - be about a 30 -60 hp gainer.

I'm just sayin -

 

HI!... JBREW : Thanks for the back-up. I know that P.I stands for POWER IMPROVED. I've gone through two tours of FORD assembly plants. Windsors 5.4L engine plant thats is 5 minutes from my house and the old OAKVILLE F-150 assembly plant. Was told the same thing at both plants. POWER IMPROVED. Also I have at least 10 buddies or relatives that work at fords here in Windsor. They also have been calling them POWER IMPROVED heads/intake manifold since they were conceived of. So ya, all your apologies are accepted once again.


*****1999 Windsor with PI Heads
The Windsor pistons were changed in 1999 when the "power improved" (PI) heads with the square intake ports and smaller heart-shaped chambers were introduced. The size of the bowl was increased from 10.5 cc to 18.5 cc to make up for the difference in the chamber size and still maintain the same compression ratio. This piston still had the 1.5 mm/1.5 mm/3.0 mm ring pack with the shallow top groove and circlips to hold the pin in place.*****

LINK to said info :

http://www.babcox.com/editorial/ar/eb40228.htm

 

that would be surface rust from spraying it down with the pressure washer and not whiping it down afterwords...

 

yeah mine is a 99, but his expedition is a 99 5.4, and it doesnt have PI head or intake, its the 235 horse old 5.4, and i had the 220 horse 4.6, both have highrise intakes. Its possible that it was a late 98, early 99 classified as a 99, possibley made in 98.

 

You did what !!

I hope that's not the engine that's goin in..

 

Then you have a 98 engine. 98's were still in production that fall because they couldn't keep up with the demand. My truck didn't see the light of day until July of 98. If that's the 5four above , then this doesn't even apply - It's a later model.

Did you check the casting #'s on the heads. It's plain as day - either it say's PI right on the heads (stamped) (Neal has a pic of that) or it doesn't, which makes it a 98. If you purchased it as a 99 5four eng - You got ripped. The 99 has a much higher residual value than the 98.

All 98,99 5fours have aluminum intakes. If that is a 5four in the pick above, it's a 2000 at the earliest. Unless someone changed out the aluminum intake.. But that doesn't make any sense.

 

http://www.sullivanperformance.com/YVS450/tech/tech.htm

 

I know mine is not PI, I just was curious what it stood for... I just have a plain jane 5.4 out of a 98 Navi

 

Right! , The sulivan page.. - Then scroll down and hit Dougs link - http://www.babcox.com/editorial/ar/eb40228.htm

Scroll down again and you get this -

1999 Windsor with PI Heads

The Windsor pistons were changed in 1999 when the "power improved" (PI) heads with the square intake ports and smaller heart-shaped chambers were introduced. The size of the bowl was increased from 10.5 cc to 18.5 cc to make up for the difference in the chamber size and still maintain the same compression ratio. This piston still had the 1.5 mm/1.5 mm/3.0 mm ring pack with the shallow top groove and circlips to hold the pin in place.