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David.Miller(at)cmworks.c
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 Posted: Tue Jan 15, 2008 6:39 am Post subject: Cold Air Induction |
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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
[quote][b]
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Rhonda(at)bpaengines.com
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| Posted: Tue Jan 15, 2008 7:24 am Post subject: Cold Air Induction |
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[i]David:[/i]
[i]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. [/i]
[i]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. [/i]
[i]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.[/i]
[i]Rhonda Barrett-Bewley[/i]
[i]Barrett Precision Engines, Inc.[/i]
[i]Tulsa[/i][i], OK 74115[/i][i][/i]
[i](918) 835-1089 phone[/i]
[i](918) 835-1754 fax[/i]
[i]www.barrettprecisionengines.com [/i]
From: owner-rocket-list-server(at)matronics.com [mailto:owner-rocket-list-server(at)matronics.com] On Behalf Of David Miller
Sent: Tuesday, January 15, 2008 8:38 AM
To: rocket-list(at)matronics.com
Subject: 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
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mdatp(at)bellsouth.net
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| Posted: Tue Jan 15, 2008 6:19 pm Post subject: Cold Air Induction |
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David, Not sure if it’s 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’m 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’re 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(at)cmworks.com wrote:
| Quote: | 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
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Lee Logan
Joined: 10 Jan 2006
Posts: 86
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| Posted: Tue Jan 15, 2008 6:49 pm Post subject: Cold Air Induction |
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James: Sounds like you have your mojo working!! Bring that speedster down here one of these days!!
Best wishes!
Lee...
[quote][b]
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f1rocket(at)telus.net
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| Posted: Fri Jan 18, 2008 1:28 am Post subject: Cold Air Induction |
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David,
The other main disadvantage is that you will have to get a custom exhaust made.
Then build a new cowling to house it all.
Jeff
Quoting Rhonda Bewley <Rhonda(at)bpaengines.com>:
| Quote: | 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
<http://www.barrettprecisionengines.com/>
________________________________
From: owner-rocket-list-server(at)matronics.com
[mailto:owner-rocket-list-server(at)matronics.com] On Behalf Of David
Miller
Sent: Tuesday, January 15, 2008 8:38 AM
To: rocket-list(at)matronics.com
Subject: 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
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