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discussion effectively silenced..
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I grabbed that pic from a past discussion, similar to this one , about 1.5 years ago. I think TH chimed in then about the plenum capacity of the original Porsche UIM being optimal for the combustion chamber volume... then Ford cut it to 1/2 its size. During that discussion, it was said that Ford did it to reduce performance and thus reduce temps as the original design ran hotter than our current models. Perhaps the easiest modification to the UIM would be to cut off the long edge of each plenum... weld on a 2-3 inch extention then weld the edge back on. Of course there would now be rough material inside the plenums, but a cycle through extrudehone would help with that. Is that correct TH-channeled-CEG'r? 
morbid
2000 Contour SVT (black)
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Originally posted by Mustang:
discussion effectively silenced..
yup.. through the italicized font member, once again.
'99 CSVT - Silver #222/276
In a constant state of blow-off euphoria.
Originally posted by Kremitthefrog:
I like to wear dresses and use binoculars to watch grandmas across the street.
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Originally posted by morbid:
I grabbed that pic from a past discussion, similar to this one , about 1.5 years ago. I think TH chimed in then about the plenum capacity of the original Porsche UIM being optimal for the combustion chamber volume... then Ford cut it to 1/2 its size. During that discussion, it was said that Ford did it to reduce performance and thus reduce temps as the original design ran hotter than our current models.
Perhaps the easiest modification to the UIM would be to cut off the long edge of each plenum... weld on a 2-3 inch extention then weld the edge back on. Of course there would now be rough material inside the plenums, but a cycle through extrudehone would help with that.
Is that correct TH-channeled-CEG'r?
That sounds like a novel idea, but I have no idea if the affects will be effective enough to warrant the costs...(is that right? Affect/effect) Anyways...log style intake manifolds are ideal for boosted applications, but on an NA motor it tends to kill airflow. That is just my limited understanding. I will email terry later today.
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Originally posted by MapOfTaziFoShoâ�??¢:
Originally posted by terry haines:
...the pics he posted are of a Porsche 'proto' 2.5
V6....and where did everyone get them?....they are ALL
mine as I have all the info on that engine.FWIW gas
velocity,plenum volume etc are far more important on a
multi-vale.A log intake will do little to improve
power.I'd suggest some of the masses look at current
and recent Formula 1 engine designs,also as a 3.0 and
later Duratecs do not have secondries but don't fall
flat at low RPM's....the Zetec has never had
secondries and is a 4 valve head etc....lets hope they
can work out 'why'...LOL...TH
I take it this was Terry's post before the advent of the SVT Focus intake manifold?
-Auto Mak or-
-Experiment or
-Station Wagon or-
-Computeriz or-
I have a foot that is bigger than a foot.
SuperChipFOR SALE
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heres an idea. motorized runners, long in low rpms, and then shorter in higher rpms, like dicussed, but the runner tubes are motorized so that they decrease accordingly as the rpms increase.
99 V6SE Sport ATX
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Mazda did that with their 20B Le Mans motors. All of this discussion, is basically pointless though. People need to stop trying to squeeze out fantasy hp with trivial BS mods that cost an arm and a leg. If you want serious hp, then get a power adder (turbo, N2O) or get a 3L, or both. 
2000 SVT Turbo 295hp/269ftlb@12psi
#1 for Bendix Brakes Kits!
Knuckles rebuilt w/new bearings $55
AUSSIE ENDLINKS $70
Gutted pre-cats $80/set
A lack of planning on your part does not constitute an emergency on mine!
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Originally posted by Stazi:
Mazda did that with their 20B Le Mans motors.
All of this discussion, is basically pointless though. People need to stop trying to squeeze out fantasy hp with trivial BS mods that cost an arm and a leg. If you want serious hp, then get a power adder (turbo, N2O) or get a 3L, or both.
True that...I am learning the hard way...Just like the wagner intake. It cost $$$ to be different thats for sure.
PLEASE HELP ME GET MY CAR TOGETHER! ITS IN DAYTON OHIO! I need the motor together and in the car so i can DRIVE it! Pleeeeeese!
diamond pistons for 3.0/forsale
#702 of 2150
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And look at wagner now...
None of us locals will go there anymore... the shop seems really shady. Kinda funny that I never noticed when I was there, at the shop.
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Originally posted by morbid:
Perhaps the easiest modification to the UIM would be to cut off the long edge of each plenum... weld on a 2-3 inch extention then weld the edge back on. Of course there would now be rough material inside the plenums, but a cycle through extrudehone would help with that.
So just a dead end extension on the end of the plenums?
I was thinking the best way to increase the plenum size was to pretty much model after the SHO intake. They're plenum made a complete loop and essentially connected all of the runners to a big 'O' shapped plenum. Like this:
-Mike
98 Contour SVT
Toreador Red #49 of 6535 Built on 3/25/97
WR Headers, Borla Cat-Back, Torsen T2 LSD, K&N Short Ram, S-AFC and Focus Shift Tower
85 Camaro
1969 358ci, 97 TA interior, 91 Z28 GrdEfx and Aero Wing 255rwhp
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