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Join Date: Nov 2008
Location: Michigan
Posts: 642
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Carb Intakes For 3.0 Conversion
What is the proper size for the intakes bores to be Top to bottom. Right now I'm thinking 40mm to 34mm, but I'm not confident this is right. Can you guys help. Thanks.
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02-20-2009, 02:29 PM
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Location: Michigan
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bump
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02-20-2009, 05:46 PM
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Registered
Join Date: May 2003
Posts: 3,346
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3.0 engines had two different port sizes. The 78-79 cars had 39mm intake ports. The 80-83 cars had 34mm ports. There is conflicting data on some Euro SC's. There maybe some 80-83 Euro cars with 39mm ports.
-Andy
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72 Carrera RS replica, Spec 911 racer |
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02-20-2009, 07:31 PM
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Join Date: Nov 2004
Location: Lakewood, Ca.
Posts: 839
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One call to PMO insures you will have the perfect intakes for your engine.
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02-20-2009, 08:17 PM
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Location: Michigan
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bump
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02-21-2009, 10:39 AM
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Registered
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Location: Michigan
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I'm thinking I should match port these. Has anyone done this conversion? I faxed PMO, but I don't expect to here from them till sometime next week. I really wanted to get started on these soon.
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02-21-2009, 01:06 PM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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I suggest you post your exact engine type (930/XX) as stamped in the right side of the case just under fan support. This information will help us provide a correct answer.
Yes, they should be port matched. Yes, carbs will make your car have better throttle response. Yes, carbs will suck more fuel from the tank. Yes, they are fun. Yes, many people have done this conversion.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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02-21-2009, 04:49 PM
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Location: Michigan
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I have 39mm head ports, so i guess thats my answer. I didn't relize about port matching them until i sat down and thought about it
uh duh |
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02-21-2009, 05:29 PM
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Registered
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Location: Michigan
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i got a weird # off there, it's 6400097, that don't seem right
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02-21-2009, 05:39 PM
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Registered
Join Date: Nov 2008
Location: Michigan
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okay, the # is 930\07. It says i have the 34mm intake ports, but they measure 39 with my calipers?
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02-21-2009, 05:54 PM
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trust your calipers
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72 Carrera RS replica, Spec 911 racer |
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02-21-2009, 09:10 PM
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RETIRED
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Quote:
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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02-22-2009, 05:01 AM
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AutoBahned
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He does not have time to answer freebie phone calls and chat endlessly to people who are not customers. It is very nice that some will do that on this bbs, but most doctors, lawyers, or business consultants would not do this....
He will call you back promptly. Give him some times to cal on the fax. Last edited by RWebb; 02-22-2009 at 10:20 AM.. |
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02-22-2009, 09:58 AM
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RETIRED
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I wasn't being snotty, just stating that they don't have a published telephone number and only accept faxes. UNLESS you are an established shop/customer. THEN you qualify for his time....
Quote from the PMO site.... For product support, fax your questions to 310-394-6313 and include your phone number and best time to be called.
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1983/3.6, backdate to long hood 2012 ML350 3.0 Turbo Diesel |
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02-22-2009, 10:01 AM
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Da cab
