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Join Date: Feb 2008
Location: FRANCE, South
Posts: 29
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Weber conversion Carrera 3.0
Hello
I would like to switch to a CIS system with the WEBER 40 IDA 3C. What can I put on as an intake manifolds. The engine is a carrera 3.0 Does PMO manufactures an intake manifolds? thank you in advance |
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RETIRED
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Most used Webers are used up. PMO makes a great product and will supply everything you need with a better carb than the original. Pricey but worth it.
If I remember he only deals with the initial order via fax. After you buy he does talk on the phone or via email. Good luck.....BTW, switching to carbs is best if you upgrade the cams and tweak the ignition. Stock FI cams on the 3.0 aren't the best with carbs for performance and/or mileage per gallon.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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Join Date: Apr 2007
Location: I live on the road, I just stay here sometimes...
Posts: 7,104
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Yes
Even with webers use the pmo intakes They are engineered to block off the cis ports
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73 RSR replica (soon for sale) SOLD - 928 5 speed with phone dials and Pasha seats SOLD - 914 wide body hot rod My 73RSR build http://forums.pelicanparts.com/porsche-911-technical-forum/893954-saving-73-crusher-again.html |
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Join Date: Feb 2008
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Thank you for your reply
I know that PMO carburetors are very good but I already have the weber in very good condition. |
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Join Date: Apr 2007
Location: I live on the road, I just stay here sometimes...
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Also, when you order your PMO manifolds for your weber carbs also order the spacers(or insulators) or whatever he calls them
Note that the factory manifolds won't work
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73 RSR replica (soon for sale) SOLD - 928 5 speed with phone dials and Pasha seats SOLD - 914 wide body hot rod My 73RSR build http://forums.pelicanparts.com/porsche-911-technical-forum/893954-saving-73-crusher-again.html |
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Registered
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Do you have to run insulators? My mechanic put the tall PMO manifolds on my 2.7 spec. Motor but did not install insulators.
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I have this set up on my 3.0 big port motor. I used the 46MM PMO tall intakes with weber 40's and it works great. Excellent low end throttle response. I also have Web Cams with SSI's and it feels stronger than my 3.2 motronic motor.
Best of luck Bob
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Banda 69 911T 3.4 ltr. Outlaw build 72 BMW 2002ti Alpina "Pig Cheek" build |
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Join Date: Jan 2007
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No you don't have to run the insulators but they are a good idea as they are a heat barrier.
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I would have to put new studs. I don't think mine are long enough for insulators.
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Join Date: Aug 2005
Location: Cleveland, OH
Posts: 644
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I heard fuel boiling in my webers before I put insulators in.
Longer studs came with the kit, if I remember correctly.
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72 911 coupe 2.7L S Cams/Webers Street/Track 68 912 coupe 1.6L sold |
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Vintage Owner
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On my 2.7, I used the PMO kit and did use the insulators. Then I installed a switch that allows me to turn off the fuel pump before parking the car. That allows the fuel in the float bowls to drop to a lower level and helps with the hot fuel percolating. Especially with today's ethanol laced fuels, it helps cut down on the fuel boiling out of the vent tubes.
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84 Targa (sold) 70 914-6 (sold) 73 914-6 2.7 conversion (sold) 75 GMC Motorhome (sold) 2016 Cayenne |
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Acquired Taste
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what webcam grind did you use? I have used the 120/104 grind and have a had terrible time getting off a rich at idle and highway cruzing speeds AF.
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78SC PRC Spec911 (sold 12/15) https://www.youtube.com/watch?v=f7I6HCCKrVQ Now gone: 03 996TT/75 slicklid 3.oL carb'd hotrod 15 Rubicon JK/07.5 LMM Duramax 4x/86 Ski Nautique Correct Craft |
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Thanks for all your answers
Someone has already ordered from PMO, could you please explain how did you proceed ? Thank you |
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It seems a shame to mess with such a beautiful engine as a Carrera 3.0.
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ROW '78 911 Targa
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From what I've read, PMO only accepts orders and questions via fax machine.
Fill out the ordering information and ask any questions. He will get back to you.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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Join Date: Feb 2008
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Quote:
![]() It's a joke.... i suppose I can send faxes with internet... |
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ROW '78 911 Targa
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Quote:
Lots of free apps out there that will send a fax from your smart phone.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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Join Date: May 2017
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pics please when done
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![]() You want to end up with something like this. XDi ignition not required ![]() Sent from my iPad using Tapatalk Pro
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Chris https://dergarage.com ‘07 GT3, '80 SC Weissach (For SALE), '01 986S, '11 958S, '18 Stelvio, '18 Dursoduro 900 |
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