02 F-150 5.4L 4x4 Super cab; Silly Question, Does the plastic molding/cover from the old manifold need to be installed on the new manifold?

 

What ever is on the OLD manifold has to be on the NEW manifold.
Did your truck come with a ALUMINUM manifold?? Your not replacing it with a composite one ru?
My advise is KEEP your OEM aluminum one and have it REFURBISHED at a machine shop. They don't crack and leak like the plastic ones.
I still have my 1997 4.6 OEM aluminum manifold that has 500k miles on it and still going.
Look at what used ones sell for on eBay.

 

This is the manifold that was on the truck when I bought it, definitely not aluminum. I was referring to the plastic cover at the bottom. What is its purpose, heat sink? Does it need to be transferred to the new manifold?

 

All 5fours had composite (plastic) intakes after 99. So you're good there.

If you're referring to the insulator then no. They fall apart and usually get tossed.



You might have a 1 piece set up, regardless you can toss the insulator if that's what you're referring to.

 

Why guess is it will disintegrate once you try & transfer it.
If it comes off in 1 piece, go ahead and& transfer, not going to hurt anything either way...

 

Nows the time to do spark plugs & coil boots!!!!
If youre not, atleast check them to make sure theyre tight....

 

Thanks for the input, the insulator is in pretty bad shape so it will be trashed. New plugs and COP's will be going in. The other issue I ran into was the 2 bolts that hold the EGR valve to the throttle body, the long one snapped. It will probably get drilled out and re-tapped a size bigger unless somebody out there has a better idea.
Once and, thanks for your knowledge and assistance

 

refresh my memory?
ego mounts to upper intake where the ear is mounts, where snapped bolt is?

I dont like the idea of going larger bolt.....
Looks for an engine rebuilder / machine shop in your area, sounds like youre not equipped to properly deal with it...

They Weill get it out & not destroy the threads in the process, no reason to go with a larger bolt.

Wont be costly if you just bring them the part.

 

I don't believe that factory insulator will fit the Dorman maniform
I toss them

 

The diagram I posted was 97/98 5.4L.

I believe when the 5fours went composite 2000 + the upper and lower were one piece.

97 nonPI Alum
98 nonPI Alum
99 PI Alum
00-03/04 PI Composite

97-99 5fours were 2 piece.

This -