Reply With Quote16 MAY 2010
So I totally did all this yesterday but I forgot to post it since I went out with my buddies. Anyway, this is the first write for me in a very very long time.
DISCLAIMER: You know the drill,all of the following is purely a reference based on personal experience. Aside from the obvious there really isn't to many ways to fuck this install up. If you've read and followed my 96' GT N.P.I - P.I. intake swap. Then you know how simple this really really is. The only difference for the 4v Cobra is the intake coolant crossover tube which really is self explanatory.
What you will need:
- Basic hand tools ( 8mm,10mm,and 15mm socket with appropriate ratchet )
- Medium size plying device to be used with finesse ( for crossover tube )
- RTV black or Grey if you don't have new Factory Ford lower intake gaskets ( which are ridiculously expensive ).
- General Purpose grease
- Zip Ties if you're like me and all your injector tabs are broken and it's pretty common.
- Mach 1 ( 03/04 ) lower intake
- Some other reason you need to swap you intake out...lol.
- I might have forgot some stuff but it's cool cause I'll hopefully remember and add it later.
INTAKES:
The one you see here is the 03 Mach 1 Intake. As far as NA 4V 4.6 Intake go this in stock form is suppose to be the best flowing intake ported. Stock for Stock being it and the post Fix intake according to NAZ a very reputable modular intake builder. They are close to the same and wont notice a huge difference until you start to modify them. But the Mach 1 intake in general is the better intake.
This is the intake that came off of the car yesterday. Now at first after finding no green or blue marks on the upper intake. It was assumed that this was a "pre" fix intake and having some trouble searching the part number on it. After placing a four in the funny looking spot I found a thread on modular depot or a dealer who ran the part number for someone. After going back a few years found it to be a "post" fix or at least assumed it was.
Now also based on testing done my Nazman the runner flow for the three intakes is as follows:
99' Cobra "unfixed" intake : 230 CFM
Ford part # XR3E-9S455-AC
99' Post Ford "Fix" lower intake manifold = 242 CFM
Ford part # XR3E-9S455-BA
03' Mach 1 = 290 - 310 CFM
Ford part # XR3E-9S455-AE (This is the same part number as the 2001 Cobra.)
So needless to say when I read this I was like "Well,for the price it's worth it to me and gives me something pretty badass to build on later.
The install:
Everything from here on out is pretty self explanatory to be honest. But I'll highlight the little things.
Start by removing all the cables,wires connections,bolts,and fuel rail from the engine bay or move it out the way.
Eventually you'll get to this step and need to remove your intake coolant crossover. as long as you take your time and don't force it. It'll pop right out and spill minimal fluid. You'll need to do this to uncover the front two bolts so you can remove the intake.
I used this as an opportunity to clean my intake valley and mating surfaces for the gaskets as well. And notice it is in fact a Teksid block.
I'd also suggest to take this time and inspect your runners and back side of your valves for possible oil leaking,cracks,chips,or general discrepancy you may not know about being a used car and all.
Then plug and your ports and clean the mating surfaces as I did. I just used brake cleaner for the surfaces but carb cleaners works well too.
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Try to keep your bolts and stuff together during the process as it makes reassembly easier.
Once you get the lower intake and and bolted down. Grab the general grease and lube the ends just before and after the o-rings on your crossover tube. This is to prevent breaking or tearing of the o-ring when re-installing and promotes sealing on the old rings too.
Do a dummy check on all your bolts,gasket areas, and ports.
Shortly after you should be all done !
