How to: - '02 limited 4.0 to 4.6 dohc swap | Page 7 | Ford Explorer Forums

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How to: '02 limited 4.0 to 4.6 dohc swap

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This gives me a boner.

Too bad I just swapped a SOHC into my trucklet last year. If that thing gives up the ghost, this may be my next project...
 



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Old engine is out, new engine is in. Not running yet, but it's a start.
152FAAE4-8B3F-4B38-93F3-681B42C337E4_zps0dy4pl7o.jpg
 






I am guessing this engine will be making about 450hp. Should be pretty fun until the trans explodes. Still waiting on LKQ to get another set of 20" wheels. Still rocking the 17" mustang wheels for now.
 












I put the black ones on for install so I didn't damage the blue ones. I am doing some sort of head cooling mod for sure.
 






It's getting closer....
2A834F38-6DB5-4683-8A6E-F8BA4BDF2171_zpskx6w9wkw.jpg
 












Did you upgrade the torque converter or running a stock trans?
 






Stock trans for now, we shall see how long that lasts. Absolutely not enough room for factory cooling fan. I need to install the radiator and the secondary belt drive to see what I am working with. I am planning on either dual electric fans or a slim single between the radiator and confessor after the trans cooler is moved, of course.
 






Terminator

That is awesome!
 






pusher vs puller

You're probably aware that a pusher fan in front of the radiator is less effective than a puller fan with a shroud behind the radiator. I would be concerned about potential inadequate cooling with just a fan between the radiator and the condenser. Is the radiator a single core or a double core? A single core would give more room but less cooling than a double core. I wonder if a single core with pusher and puller with shrouds would be more effective than a double core with just a pusher.
 






Rad is a single core. I am going to try and use 2 smaller puller fans if I can. But I won't know until it's together more.
 












Nope, that control pack is for the coyote 5.0 only.
 












I don't, I am using an explorer pcm. A 2v pcm will run a 4v with a tune.

I went and grabbed the fuel pump and heat exchanger pump off of my dads car today. He is going to need a different setup for the coyote so I might as well use the cobra fuel pumps. A new cobra fuel pump is $4k from Ford!!! Seriously. I put the secondary belt drive on today also. So happy that everything is fitting. Next big hurdle is the cooling fans. I got a magnaflow 3" into dual 2.5" cat back for a f150, we had it on the shelf at work and the parts manager said I could have it for 1/2 cost. So that is going to be the exhaust setup.
 






single tailpipe?

What diameter are the downpipes? My Dynomax VT muffler has a 3" dia. single inlet and outlet into a single 3" dia. tailpipe.
Muffler1.jpg

My original downpipes were only 2" dia. so I had them cut close to the manifold flange and flared to 2.25" dia.
DvrDwnPip.jpg

I used 2.25" dia. high flow cats. The cat outlet pipes are flared to match a 2.5" dia. dual inlet Y pipe with a single 3" dia. outlet.
YPip2.jpg

The exhaust was so loud above 2500 rpm that I added a 3" dia. vortex turn down to reduce the sound 3 decibels.
Turndown3.jpg

The exhaust is still plenty loud at WOT but not an embarrassment when driving moderately.
 






I am pretty sure the down pipes are 2.5" the v6 downpipes look like they are 2" I happen to have a v6 torn apart at work and I was checking it out the other day. I noticed your o2 sensor and your wideband are in line. I was worried about doing that on my setup. I didn't know if it would affect the reading being positioned like that. Have you had any issues, or is there no difference in mounting it that way?

I definitely don't want it too loud or obnoxious. I drive this vehicle a ton and if it's too loud I'll not be happy. I am going for a nice rumble, but still able to hold a conversation while cruising. I am not sure if I want to do a tailpipe on each side or put them together near the stock location, or even angled out each side. I am leaning towards dual pipes near stock location.
 






dynomax VT

The main reason my system is loud is due to the dynomax VT muffler. Its basically a high flow glass pack with a spring loaded variable damper.
VTValve.jpg

It allows high flow at WOT and does not lose power at low load.
The Vortex cone in the turn down is used in circle track racing.
Turndown2.jpg
 



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