Contour Enthusiasts Group Archives Forums Modifications 3.0L Duratec 3 liter intake (upper)

Has anyone measured the upper 3liter intake? How much taller is it than the 2.5? Did I miss it in the search?

Actually Warmonger did a post "exposing" (as he put it) the myth that the 3L upper was bigger (inside) then a dual honed 2.5L upper. (DH UIM was noticeably larger all around)

If that's why you were wanting to use it you should check out that post. It's in this forum.

The 3 liter aluminum upper ports are much larger than the SVT 2.5 uppers, they're oval with a split to two ports right before the lower. The plastic ones are oval all the way through. If Warmonger spoke of the SVT upper being larger, he mis-typed or something... The SVT lower and the 3 liter lower are very similar, but the upper on the 3 liters are no comparison...

As far as the manifold sitting higher, there's about an inch to tall of a difference, right in the area of the IAC valve on the 3 liter manifold and the EGR area on the 2.5 manifolds. Won't quite fit without a custom IAC on the 3 liter aluminum uppers or at least it will be real, real close so that engine movement would dent the hood. As an added bonus, the 3 liter uppers are a medium length runner design which can be ported by backyard mechanics with a die grinder. I have not measured clearance on of the plastic 3 liter uppers.

i am very intrested in this post. i will be doign my upgrade ina few days hopefuly and want to know what i should go with.

We have already manufactured a 3L manifold that WILL fit under a SVT hood. Please watch the Ohio 3L project for more details as the project progresses.
"QWIC"

I spoke of the outlet ports on the early 3L uppers Definitely NOT being bigger. The runners are an oval shape and they only split at the exit. Those exits are much smaller. That said, the surface roughness of the oval shaped tube was pretty bad and by my calculations, the Dual honed upper primary and secondary actually has more cross sectional area than the 3L upper that I have.

My disclaimer comes from the fact that I took measurements off the 3L upper that I have here. I would be more than happy to re-do the cross sectional area measurements again if anyone really needs it.
I can only assume that other aluminum 3L upper manifolds are similar. Therefore I see no benefit to switching to the 3L upper.
That does NOT make any claims or comparisons regarding the plastic upper 3L IM.

Regarding this 3L upper stuff, I have to ask the question as to why to use it? If the 3L in stock form using the 3L heads and intake manifolds only makes 200HP, then isn't that what you are going to slap into your car? How can you expect to exceed that power rating by very much if you use all the same components. Custom tuning, exhaust, etc.... Maybe 225-235 at the crank.

My guess is that you would not make more power in the end than a well done hybrid motor. But then, as Lance says: "Prove Me Wrong"
We all benefit when that happens!
Good luck whichever way you go.

warmonger

I plan on using a complete '01 3L with some massaging done to the heads, I cant use the SVT heads (re: Vortech) and therefore will look elsewhere to get more power out of the 3L to get more potential power. The upper to me seems like it would have better flow due to the "restriction/bottle neck".

Has anyone added a lighter flywheel or headers to a 3L?? If these add hp to a 2.5 then I am sure the 3.0 will benefit alot too (whats the weight of a stock 3L flywheel??)

In reality doing the swap is IMHO the best bang for the buck mod (if you can do it yourself) blocks can be purchased anywhere from $600-1000+ for a good motor, in which from Ford has 40ft/lbs more than a 2.5L. Compared to $650 for headers that add less than 20% of that increase found in the motor swap alone. I would take a bone stock 3L over an SVT 2.5 anyday (in a contour that is :p )

Also does an ATX have the same loss as our MTX on a dyno (I would think its a bit greater)

The 01 & newer heads have a different single port intake entry (no secondaries!)
If using the entire engine how do you plan to get the upper to fit under the hood.
Now if planning to use the 01 3L lower (single oval port) and SVT upper. I would be very interested in seeing the fabrication work (no sarcasm - I really am interested!)

Oh yeah! The ATX loses a lot more than the MTX, but what does that matter for "crank ratings"

BTW - The 3L makes 0HP & ~30TQ more than a stock SVT. (at the crank!) However IMO the 2.5L SVT (heck either 2.5) is under-rated in Torque.

Warmonger - I have about 230 crank HP already... Now in the TQ department I am lacking vs a 3L, but not as much as one would think...

Here's a little teaser 3.0L Upper

Doc

[QUOTE]Originally posted by DemonSVT:
The 01 & newer heads have a different single port intake entry (no secondaries!)

Aware of this

[Quote]
If using the entire engine how do you plan to get the upper to fit under the hood.
Now if planning to use the 01 3L lower (single oval port) and SVT upper. I would be very interested in seeing the fabrication work (no sarcasm - I really am interested!)

slight modification of 3L upper after all thats the name of the game. ALthough a kinda like the idea of a cowl induction type hood

[Quote]
Oh yeah! The ATX loses a lot more than the MTX, but what does that matter for "crank ratings"
Just asking, not comparing

[Quote]
BTW - The 3L makes 0HP & ~30TQ more than a stock SVT. (at the crank!) However IMO the 2.5L SVT (heck either 2.5) is under-rated in Torque.

So are you saying you dont want an extra 30ft/lbs?? The loss of torque in the driveline is not the same as horsepower (I am sure you are aware of that) My stock SVT put down 150ft/lbs so if I can dyno a 180 at the wheels using a stock 3L and then add similar mods you used to acheive your numbers, the results should be pretty rewarding. Add in a Vortech (if it doesnt self distruct :rolleyes: ) and it should scream...