---------------------------------------------------------- Rocket-List Digest Archive --- Total Messages Posted Tue 01/15/08: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:39 AM - Cold Air Induction (David Miller) 2. 07:24 AM - Re: Cold Air Induction (Rhonda Bewley) 3. 06:19 PM - Re: Cold Air Induction (James Frank) 4. 06:49 PM - Re: Cold Air Induction (Lee Logan) ________________________________ Message 1 _____________________________________ Time: 06:39:31 AM PST US From: "David Miller" Subject: Rocket-List: Cold Air Induction Is anyone familiar with cold air induction on a 540? What is it, what are the advantages and disadvantages, what's the cost, where can get the equipment, how difficult is it to installation and what modifications are required, and most importantly; is it worth it ? David Miller Lexington, TN HRII under construction ________________________________ Message 2 _____________________________________ Time: 07:24:28 AM PST US Subject: RE: Rocket-List: Cold Air Induction From: "Rhonda Bewley" David: We have a cold air induction system for the parallel head and angle head 540 and 580. Our system is a lightweight magnesium sump and plenum. The system has seamless stainless intake pipes, and the system is shipped complete with everything you need to install the system on your engine. The engine becomes forward facing induction resulting in greater inlet air pressure (ram air recovery effect), and if you get a larger throttle body, the increase in air flow is substantial. The system also removes the inlet air from the oil sump, rerouting it through the separate plenum. We see a 15-20 hp increase with the cold air system on stock compression engines. These numbers are verifiable on our dynomometer. This is the cold air sump used in virtually all experimental competitive aerobatic/race parallel 540 engines in use today. The biggest disadvantage is that with more air and colder air, you are going to burn more fuel. You may also have to make cowling modifications for the system on your airplane. Hope you find this information helpful. Rhonda Barrett-Bewley Barrett Precision Engines, Inc. Tulsa, OK 74115 (918) 835-1089 phone (918) 835-1754 fax www.barrettprecisionengines.com ________________________________ From: owner-rocket-list-server@matronics.com [mailto:owner-rocket-list-server@matronics.com] On Behalf Of David Miller Sent: Tuesday, January 15, 2008 8:38 AM Subject: Rocket-List: Cold Air Induction Is anyone familiar with cold air induction on a 540? What is it, what are the advantages and disadvantages, what's the cost, where can get the equipment, how difficult is it to installation and what modifications are required, and most importantly; is it worth it ? David Miller Lexington, TN HRII under construction ________________________________ Message 3 _____________________________________ Time: 06:19:30 PM PST US Subject: Re: Rocket-List: Cold Air Induction From: James Frank David, Not sure if it=B9s worth it or not. I raced a fellow that had 10:1pistons, Barrett cold air induction, no air filter and a Sky Dynamics fancy exhaust. I=B9m running a Barrett engine with 9:1 pistons, filtered air and nothing else but attention to aerodynamic detail and I smoked him in a flat out race. If you=B9re going for speed, fair the plane well and make it straight. Jim Frank Atlanta F1with 110hrs on 1/15/08 9:38 AM, David Miller at David.Miller@cmworks.com wrote: > Is anyone familiar with cold air induction on a 540? What is it, what ar e the > advantages and disadvantages, what's the cost, where can get the equipmen t, > how difficult is it to installation and what modifications are required, and > most importantly; is it worth it ? > > > David Miller > Lexington, TN > HRII under construction > > > > ________________________________ Message 4 _____________________________________ Time: 06:49:27 PM PST US From: "Lee Logan" Subject: Re: Rocket-List: Cold Air Induction James: Sounds like you have your mojo working!! Bring that speedster down here one of these days!! Best wishes! 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