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Previous Thread Next Thread Print Thread Rate Thread Intake plenum ? #432453 04/09/04 08:31 PM Joined: Feb 2004 Posts: 39 D Dark_Angel OP Getting the Wheeling Fever OK, I have my 3.5 tore down. Can someone explain the reasoning for the intake manifold/plenum setup. There are 6 throttle plates inside the plenum that are vacumn activated. Is this basically working like a vacumn secondary on a carb? Is there a drawback to removing them? I noticed that there is a lso alot of carbon buildup on the inside of the plenum, back on the TB and on the plates. It is causing it to stick. Any suggestions? Thanks, 2000 Trooper 4x4, Auto, TOD pretty much stock at the moment. 2001 Camaro Z28, M6, fully loaded and too many mods to list! AKA Dark Angel Re: Intake plenum ? [Re: Dark_Angel] #432454 04/09/04 10:22 PM Joined: Dec 1999 Posts: 2,394 Mesa, AZ houlster Isuzu Moderator Quote OK, I have my 3.5 tore down. Can someone explain the reasoning for the intake manifold/plenum setup. There are 6 throttle plates inside the plenum that are vacumn activated. Is this basically working like a vacumn secondary on a carb? The intake is a dual-runner design. Long runners at low rpm for improved torque, then they switch over to short runners at higher rpm for improved breathing and hp. Quote Is there a drawback to removing them? Yes. You will loose either torque at low rpm, or hp at high rpm, depending on what runners are "on" with the plates removed. Quote I noticed that there is a lso alot of carbon buildup on the inside of the plenum, back on the TB and on the plates. It is causing it to stick. Any suggestions? Thanks, Clean it out? There's not really anything you can do to prevent it. Carbon build-up is just something all engines have with EGR and PCV system. Not much you can do without disabling these. --Dan Re: Intake plenum ? [Re: houlster] #432455 04/09/04 10:43 PM Joined: Feb 2004 Posts: 39 D Dark_Angel OP Getting the Wheeling Fever Thanks, Makes sense to me. I will just clean it and go with it. I thought about making a block-off plate to put between the EGR and the intake, esentially blocking it, but leaving the EGR visual and soleniod to fool the computer. They seem pretty pointless to me and cuase too many problems. Especially since they got rid of them on the '01 and '02 F-bodies from the factory. 2000 Trooper 4x4, Auto, TOD pretty much stock at the moment. 2001 Camaro Z28, M6, fully loaded and too many mods to list! AKA Dark Angel Moderated by  4x4Wire, houlster, jezeric, Jim_Paget, strawmyers  Hop To Mitsubishi Forums ------  Mitsubishi 4x4 and SUV Tech  Mitsubishi Diesels  Mitsubishi ArchiveToyota Forums ------  Early Toyota Trucks  Toyota 4Runner, FJ Cruiser &...  T100 & Tundra Forum  Tacoma Forum  Toyota Tech ArchiveJeep Forums ------  Jeep Talk  Jeep TechIsuzu Forums ------  Isuzu 4x4 & SUV Talk  Isuzu 4x4 & SUV Tech  Isuzu DieselsKia Forums ------  Kia Talk  Kia Sportage & Sorento TechOff Topic Chat ------  4x4 Gallery  Off-Topic Chat  Recreational Access & Land ...  Politics4xForums ------  Outdoor Gear  General 4x4 Discussion  Tools and Fabrication  General Communications  Amateur Radio  GPS and MapsParts Bin ------  Private Party - Garage Sale  Private Party - Items wanted  Vendors, Hot Deals, Group Buys4x4Wire Back Yard ------  Suzuki Forum  AZ Crawler Crew  Cal-Nev Crew  General Ford 4x4 & SUV Forum  General Dodge 4x4 & SUV Forum  General Chevy 4x4 & SUV ForumFeedback & Testing ------  Problems, Questions, Suggestions4x4Wire Staff ------  Forum Moderators  Problem Threads Print Thread Switch to Threaded Mode 5 Excellent 4 Good 3 Average 2 Bad 1 Terrible View Profile Private Message Follow User Forum Posts View Profile Private Message Homepage Follow User Forum Posts View Profile Private Message Follow User Forum Posts

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