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Author Topic: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor  (Read 16014 times)

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Offline amc49

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #30 on: February 07, 2014, 09:37:05 PM »
Even though not a full length header there, anytime you line up all pipes so that they can blast parallel to each other in close proximity to each other you will increase power. The individual pressure pulses then can pull easily on other cylinder pipes that are not firing. The vacuum there increases extraction effect. Think of the header collector as a parallel firing gun.

I've seen one Ranger cast exhaust manifold that looked like it was a 4-2-1 type, that one might work well too.

Other than that, if the individual pipes join up at the log one at a time and spread out down the log, well that's not the hot setup. They tend to interfere with each other then.

Two different types of exhaust extraction. One is pure untimed vacuum like proper collected headers do, the other is timed according to pipe diameters and lengths. If header well made then both can happen. I've hooked up a vacuum gauge to a header collector to have it show constant up to 10-13 inches Hg. of vacuum at steady cruise on a street car. So much for 'necessary back pressure', which is a myth.


Offline johnbigman2011

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #31 on: February 07, 2014, 09:52:51 PM »
Not trying to bust the posting... I have a Pinto 2.0 in my T Bucket and was wondering how zoomies will act? they are about 12" in length and run back on about a 30 degree angle.

I f your not interested in the ranger header I have a hooker style header that I could probably get rid of.
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Offline dick1172762

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #32 on: February 08, 2014, 09:03:27 AM »
They will kill torque when starting off BIG time. Only way they would help is when your flat out with both feet on the gas.
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Offline Billnparts

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Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #33 on: February 08, 2014, 12:19:13 PM »
I've been running an MG replica with the 2.3 for 20+ years using the Offy intake with the 390 Holley four barrel using #51 jets. Ford Motorsports cam. The header is from a 1979 Mustang, Turbo coupe bell housing w, '86 Mustang 5speed and MustangII 8", 4:11 posi. Street driven and autocrossed extensively. Performance is great and it's incredibly reliable.


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Offline amc49

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #34 on: February 08, 2014, 08:29:33 PM »
Zoomies....... .............. uh, really bad idea.......... .............. ....on several fronts.

If they flow freely enough at that length you can guarantee burnt valves there. They must be longer to keep reversion from sucking back cold air that strikes the valves, the resultant warping hot/cold stops proper seating and the valve melts. Common say if a header tube cracks way short and you keep driving it. That affected cylinder later loses the valve. Happens all the time.

At that length you may as well run with bare cylinder head shooting fire, it'll look cool anyway. You will have tossed out any power weak as it may be that individual pipes can give. I personally refer to them as detuning an engine.

And they sound absolutely like junk.

Offline 74 PintoWagon

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #35 on: February 09, 2014, 06:44:56 AM »
Zoomies are for blown motors.
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Offline amc49

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Re: Looking for carb, intake and exhaust upgrades on lightly modified 2.3 motor
« Reply #36 on: February 10, 2014, 01:28:15 AM »
No need for scavenging with all that pop in there. Running so much mixture in there you must get it out as quickly as possible, true headers would slow that down from interference since the burned mix is so dense.