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COP interference???

Think i have it all figured out, thanks guys....saying something can't be done is just retarded, there's always a way.
 
But that was the earlier model. I don't think there has been any assemblies using the combination of: +04 3L, COP, SVT UIM. The +04 valve covers are larger.
 
If you're going to have a spacer cnc'd, what's to stop you from making a new solid piece? Not that you could see any of it really but it would eliminate the need for even more gaskets.

on the other side of it, how would making the runners longer hurt or help this engine?
 
Runner length is basically a tuning device to help make power at a certain RPM. In a street type engine a small change probably won't make a huge difference since there's so much other stuff that is not done to make power.

Long runner = lower RPM power
Shorter Runner = higher RPM power

as a general rule

of course w/o using the secondaries I can't really say how the airflow is dividing at certain rpm's but will of course generally take the path of least resistance (shorter runner).

Are the shorter runners in the duratec bigger? I can't recall for sure but it seems like that's the case.

So the larger runner is also for higher RPM power generally.

If i recall correctly from my engine tuning/design books I believe the runner length acts as the peak on a power curve and the size of the runner shifts the curve around that peak.

Anywho...
 
Pudmunkie said:
You'll make more power if you use and oval port manifold :laugh:
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I'm no out for power this time around, it’s a 2.5 not a 3L swap, and if I was, I'd stick with my max honed split port upper, Kthanksbye. :p :)

Spent some time at the shop tonight after work, and From what i gathered, to make everything work out, would take roughly a 3/4" spacer, wich i would have CNC'd out of AL, and o-ringed on both sides to completely eliminate the UIM gasket. You will see this arise in something else i've been working on.

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Now, what i did discover, is that with the fron coils rotated 180, because they're off center tehy move away from the UIM and it would bolt up in this manor if it didn't interfere with the Valve cover as shown.

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Now because my plans also involve some other changes to the engines components location and function I'm going to stay away from the plastic manifolds. After some measuring and comparing, I will instead be modding the stock 2.5 VC's so accept the COP units. Pics follow of current design concept. There is really nothing stopping me from making this work at this point. The VC's will not be tapped or drilled as shown to mount, this is just for mock-up.

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Is there a noticeable advantage to using COP? Honestly, I've never had a problem with the coil pack on any of my V6 SHO's, but the V8 cars (basically 2.5L duratecs with 2 more cylinders) are always cooking the rear coil packs. I haven't checked the prices of them in a long time, but they were pretty pricey the last time I looked.
 
Dude, that is a good idea! Rotating them and tapping a new hole :crazy:, nice. Should look pretty clean too. :thumbsup:
 
blu_fuz said:
Dude, that is a good idea! Rotating them and tapping a new hole :crazy:, nice. Should look pretty clean too. :thumbsup:
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I'm actually using aluminum standoffs that will be welded to the VC and tapped, they should be here tomorrow and i can continue work on the project.
 
todras said:
McMaster Carr ownz. Needs more spice rack though. :D
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It's at the shop maybe later.

On the McMastercarr note, yes they do own. They didn't have threaded standoffs in M5X.8, so i look in the unthreaded. They have them in the tap drill ID for M5X.8 and in the length i need at a tol. of +/- .005". Even if they don't have exactly what you need, they can typically get you damn close. :cool:
 
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