---------------------------------------------------------- RVSouthEast-List Digest Archive --- Total Messages Posted Sat 05/16/09: 6 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:05 AM - Exhaust systems (John Long) 2. 06:34 AM - Re: Exhaust systems (Dale Ensing) 3. 07:22 AM - Re: Exhaust systems (Larry Bowen) 4. 09:25 AM - Re: Exhaust systems (Matt Dralle) 5. 12:27 PM - Re: Exhaust systems (larry) 6. 01:58 PM - Re: Exhaust systems (Bill Repucci) ________________________________ Message 1 _____________________________________ Time: 05:05:20 AM PST US Subject: RVSouthEast-List: Exhaust systems From: John Long In the building stage and near to ordering my engine, 200HP IO-360. Does anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 versus Vetterman crossover exhaust systems. Which would be a better choice? John Lake Wylie SC ________________________________ Message 2 _____________________________________ Time: 06:34:14 AM PST US From: "Dale Ensing" Subject: Re: RVSouthEast-List: Exhaust systems Don't know about better but I can tell you that my neighbor's 4 into 1 is l ouder than my Vetterman crossover. Both on O-360. Dale Ensing RV-6A ----- Original Message ----- From: John Long To: rvsoutheast-list@matronics.com Sent: Saturday, May 16, 2009 7:59 AM Subject: RVSouthEast-List: Exhaust systems In the building stage and near to ordering my engine, 200HP IO-360. Does anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 vers us Vetterman crossover exhaust systems. Which would be a better choice? John Lake Wylie SC ________________________________ Message 3 _____________________________________ Time: 07:22:55 AM PST US Subject: Re: RVSouthEast-List: Exhaust systems From: Larry Bowen I looked into it briefly. Once I saw the price, it was easy to decide to go with the standard Vetterman. -- Larry Bowen Larry@BowenAero.com http://BowenAero.com Sent from Welcome, NC, United States On Sat, May 16, 2009 at 9:33 AM, Dale Ensing wrote: > Don't know about better but I can tell you that my neighbor's 4 into 1 is > louder than my Vetterman crossover. Both on O-360. > Dale Ensing > RV-6A > > ----- Original Message ----- > *From:* John Long > *To:* rvsoutheast-list@matronics.com > *Sent:* Saturday, May 16, 2009 7:59 AM > *Subject:* RVSouthEast-List: Exhaust systems > > In the building stage and near to ordering my engine, 200HP IO-360. Does > anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 versus > Vetterman crossover exhaust systems. Which would be a better choice? > > John > Lake Wylie SC > > * > > st">http://www.matronics.com/Navigator?RVSouthEast-Listics.com > .matronics.com/contribution > * > > * > > * > > ________________________________ Message 4 _____________________________________ Time: 09:25:32 AM PST US From: Matt Dralle Subject: Re: RVSouthEast-List: Exhaust systems At 04:59 AM 5/16/2009 Saturday, you wrote: >In the building stage and near to ordering my engine, 200HP IO-360. Does anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 versus Vetterman crossover exhaust systems. Which would be a better choice? > >John >Lake Wylie SC Hi John, I ordered the new Vetterman 4 into 4 system for my RV-8 with an Lycoming IO-390. Haven't tried it yet, but its another option to consider. Larry claims the maximum HP output with the 4 into 4 setup. I've attached a couple of pictures of it. Matt Dralle RV-8 #82880 N998RV (res) Carpet CAD Layout Continues... ________________________________ Message 5 _____________________________________ Time: 12:27:01 PM PST US From: "larry" Subject: Re: RVSouthEast-List: Exhaust systems I used a Sky Dynamics' 4 into with which I am very happy. On the down side it take a lot of glass work on the bottom cowl to accommodate the collector. photo of the header attached and you can see it in this shot from the ground as well. Larry RV7A ----- Original Message ----- From: John Long To: rvsoutheast-list@matronics.com Sent: Saturday, May 16, 2009 7:59 AM Subject: RVSouthEast-List: Exhaust systems In the building stage and near to ordering my engine, 200HP IO-360. Does anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 versus Vetterman crossover exhaust systems. Which would be a better choice? John Lake Wylie SC ________________________________ Message 6 _____________________________________ Time: 01:58:33 PM PST US From: "Bill Repucci" Subject: RE: RVSouthEast-List: Exhaust systems John, When I was racing and testing and changing exhaust to get the most power I could, I found that the four 4-1 was good for max torque and HP at the red line. The 4-2-1, equal length exhaust provided max torque & HP in the mid RPM range. Granted, that was on a car with a very different engine (1.8, dual overhead cam, fuel injected, with a high red-line, and tuned w/in a breadth of its life.) than the big slow turning things we use on our planes. In my application I went with the 4-2-1 (or tri-Y as some call it) because I needed mid range torque. With that little bit of knowledge, I would probably select the Vetterman's crossover, thinking that you are going to run it in the mid-range RPM's unless you are into racing. It is all about what you are looking for and where you want your power peak. Bill From: owner-rvsoutheast-list-server@matronics.com [mailto:owner-rvsoutheast-list-server@matronics.com] On Behalf Of John Long Sent: Saturday, May 16, 2009 8:00 AM Subject: RVSouthEast-List: Exhaust systems In the building stage and near to ordering my engine, 200HP IO-360. Does anyone have opinions, (I know, that is a dumb question :-), on 4 to 1 versus Vetterman crossover exhaust systems. Which would be a better choice? 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