3L performance mods

[Hammy1105]

ok, this might already be covered, but i've been doing tons of research on swapping my engine out already and i've had just about enough. I already know the basics of putting the engine together and what should be used for a 3l oval swap.

Quick questions.
What other performance mods could be made or are worth the time and money with this engine while its out?

Im using an 03 taurus motor and as far as I know im gonna be using stock everything pretty much except heads and cams.

[DyComet]

Headers, no doubt about it.

[Bradness]

Josh: You have to make a decision about the intake manifold. If you go with the stock 3.0 manifold, you cannot use the Contour EGR or the IMRC.

I'm using the 2.5 intake because the 3.0 throttle body is limited to 60mm. I already have a custom machined 62mm t-body and have a hybrid 65mm for my 3.0. The stock Taurus throttle body is very different from ours and you cannot swap. About all you can do is to optimize it.

You using SVT cams?

[Hammy1105]

Already have msds headers waiting to go on new engine and I am gonna be using the svt cams.
BTW: I'm still new at the engine thing so what's IMRC and EGR?

[Beans]

Already have msds headers waiting to go on new engine and I am gonna be using the svt cams.
BTW: I'm still new at the engine thing so what's IMRC and EGR?

IMRC is what opens your secondaries..

EGR Is some emission thing hooks up to your UIM

[Big Jim]

IMRC = intake manifold runner control.

EGR = exhaust gas recirculation.

[posthuman63t]

a little more on the imrc.... (im sure dozens can explain it better than me)

Basically you have 2 intake ports for each cylinder. Long and short runners. The car will run with only 1 open per cylinder to create more torque down low (i believe) and then when you hit a certain rpm, the imrc opens up your secondaries (your second intake port) to allow for more air to enter the engine because the engine needs more flow at higher rpms.

Thats a rough lil explanation.

[Bradness]

Josh: The IMRC box is mounted on the front valve cover and has a cable going to lower intake. It uses the same principle originally on the Taurus SHO. 2 sets of runners per cylinder - long for low RPM/more TQ and the short for high RPM/HP. Now many people who've done 3.0's have commented that the larger displacement negates the need for TQ like the 2.5. Bare minimum is that if you remove it you'll throw a CEL.

Now I seem to recall that the BMW 7 series uses the same system on 1 of the motors which comes in that car. So I cannot see how it could hurt to have functional secondaries. The early Duratec Taurus/Sables (96-99) had the same system. My guess is that Ford eliminated it as a cost saving measure. A plastic upper manifold is much cheaper than the intricate casting with 12 seperate passageways.

Also, I suppose that it w/b possible to connect the EGR tube from the rr header to the 3.0 UIM. It would entail some tricky fabricating though and all the ones I've seen simply block it off. The exhaust gases actually lower combustion temps negating detonation.

[Hammy1105]

Thanks, also is there a link to the template for the oval port? I thought I've seen one on here before but can't find it

[Bradness]

Are you referring to the metal plate that someone made? Otherwise, use a stock gasket (If you're using the 2.5 LIM), fill the open spaces with JB weld or TIG and then port to match.