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11-26-2006, 01:17 AM
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#1 |
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Registered User
Join Date: Feb 2006
Location: Saint Louis
Posts: 84
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Clogged intake
Hello I decided to switch out from a 2 barrel intake&carb to a edel. performer and a edel. quadrajet on my stock 350. My center port between the intake runners (heat riser port???) was completely clogged on both sides of the intake manifold. What function does this port serve??? Does it have anything to do with the egr valve??? Why would it have clogged?? And would this affect any bad idle characteristics i was having?? Thanks,,, Matt
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11-26-2006, 08:47 PM
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#2 |
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dang its hot
Join Date: Nov 2006
Location: frankfort kentucky
Posts: 1,349
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Re: Clogged intake
for warming a divorced style choke, for quicker warm ups. on egr equiped engines, this is where the exhaust enters egr valve then the intake track,(for reducing nox emissions)
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11-27-2006, 06:38 AM
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#3 |
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Registered User
Join Date: Apr 2004
Location: Grant, Alabama
Posts: 504
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Re: Clogged intake
Its main purpose is to preheat the intake so it gets better gas mileage(supposedly) and for faster warm ups. Its not really needed, even in -30 degree weather I never had any trouble with the passgaes blocked off in my engines and I did it on purpose.
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72 Chevy C20, SOLD (Dang it.) 09 Challanger RT six speed in all black. 74 Datsun 710 wagon, all 1.8 liters of screaming Datsun power. 73 C10 long bed, 350/350 combo, nice shape. |
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11-27-2006, 09:48 AM
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#4 |
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Stepsides RULE
Join Date: Jul 2004
Location: Pineville, LA
Posts: 1,921
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Re: Clogged intake
I just put a 4barrel intake non-EGR on my truck and it completely blocks them off. It just deals with the EGR,, its not really needed.
What intake and carb# did you use? I put on an Edelbrock 2107 intake and Tues. I'll be putting on a 1406 carb.
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1981 Chevy C10 Custom Deluxe Stepside 350 V8, headers, side exhausts, 3-speed auto SOLD 1980 Chevy C10 Custum Deluxe Stepside 305 V8, Edelbrock Performer Intake, Edelbrock 1406 600CFM 4-barrel, TH350C. Bent rod. SOLD 1984 GMC Sierra Classic Longbed 6.2L Diesel SOLD 2009 Kawasaki KLX-250S too many mods for this signature 1999 Honda Accord EX 4-cylinder, 17" Motegi Wheels 215/45/17 Sumitomo tires, Tein S-Tech lowering springs, KYB GR2 shocks, Acura TL 20mm rear swaybar, debadged, blackhoused headlights, Short-Ram Intake Cardomain of the Accord |
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11-27-2006, 01:49 PM
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#5 |
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Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Clogged intake
It is there to prevent a icing situation happening in colder climates. The heating also was supposed to help the SMOG equipment work by preheating the fuel charge to the cylinders. I have mine blocked off for a cooler air charge to the cylinders for HP increases.
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