Today's Message Index:
----------------------
1. 05:19 PM - exhaust system modification (Lynn Matteson)
2. 06:16 PM - Re: exhaust system modification (jim)
3. 07:21 PM - Re: exhaust system modification (dons701)
4. 07:48 PM - Re: exhaust system modification (Lynn Matteson)
5. 08:12 PM - Re: Re: exhaust system modification (Lynn Matteson)
Message 1
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| Subject: | exhaust system modification |
Here is a shot of my new exhaust system, with Burn's Stainless 4-
into-1 collector and megaphone, if anybody is interested.
Just today I installed heat muffs on both sides to allow for cabin
heat, and carb (TBI) heat. Both work well, with the carb heat side
increasing the inlet air temp from about 90 deg. F., to 175 deg F. in
about 15 seconds. The sound is pretty mellow, too. : )
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062
Prince prop 64 x 30, P-tip
Electroair direct-fire ignition system
Rotec TBI-40 injection (sleeved to 36mm)
Status: flying with 1279 hrs... (since 3-27-2006)
Message 2
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| Subject: | Re: exhaust system modification |
Hey Lynn
Nice Job!
Jim McCormick
Jabiru Pacific LLC
255 W Fallbrook Suite 202B
Fresno, Ca 93722
559-431-1701
jim@jabirupacific.com
http://www.jabirupacific.com
On 6/8/12 5:14 PM, "Lynn Matteson" <lynnmatt@jps.net> wrote:
> Here is a shot of my new exhaust system, with Burn's Stainless 4-
> into-1 collector and megaphone, if anybody is interested.
>
>
> Just today I installed heat muffs on both sides to allow for cabin
> heat, and carb (TBI) heat. Both work well, with the carb heat side
> increasing the inlet air temp from about 90 deg. F., to 175 deg F. in
> about 15 seconds. The sound is pretty mellow, too. : )
>
> Lynn Matteson
> Kitfox IV Speedster, taildragger
> Jabiru 2200, #2062
> Prince prop 64 x 30, P-tip
> Electroair direct-fire ignition system
> Rotec TBI-40 injection (sleeved to 36mm)
> Status: flying with 1279 hrs... (since 3-27-2006)
>
>
>
>
Message 3
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| Subject: | Re: exhaust system modification |
Hi Lynn, gotta ask. Any noticeable changes in power??
--------
Zenith 701 #76120
Jabiru 2200A #2456 95 hours
Sensenich Wood 64-PJ-36 Prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375070#375070
Message 4
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| Subject: | Re: exhaust system modification |
Thanks, Jim....I'm only responsible for the pipes leading down to the
collector, but overall, I think it looks pretty good.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062
Prince prop 64 x 30, P-tip
Electroair direct-fire ignition system
Rotec TBI-40 injection (sleeved to 36mm)
Status: flying with 1279 hrs... (since 3-27-2006)
On Jun 8, 2012, at 9:15 PM, jim wrote:
>
> Hey Lynn
>
> Nice Job!
>
>
> Jim McCormick
> Jabiru Pacific LLC
> 255 W Fallbrook Suite 202B
> Fresno, Ca 93722
> 559-431-1701
> jim@jabirupacific.com
> http://www.jabirupacific.com
>
>
> On 6/8/12 5:14 PM, "Lynn Matteson" <lynnmatt@jps.net> wrote:
>
>> Here is a shot of my new exhaust system, with Burn's Stainless 4-
>> into-1 collector and megaphone, if anybody is interested.
>>
>>
>> Just today I installed heat muffs on both sides to allow for cabin
>> heat, and carb (TBI) heat. Both work well, with the carb heat side
>> increasing the inlet air temp from about 90 deg. F., to 175 deg F. in
>> about 15 seconds. The sound is pretty mellow, too. : )
>>
>> Lynn Matteson
>> Kitfox IV Speedster, taildragger
>> Jabiru 2200, #2062
>> Prince prop 64 x 30, P-tip
>> Electroair direct-fire ignition system
>> Rotec TBI-40 injection (sleeved to 36mm)
>> Status: flying with 1279 hrs... (since 3-27-2006)
>>
>>
>>
>>
>
>
Message 5
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| Subject: | Re: exhaust system modification |
Hi Don-
It's really hard to say whether the power was improved or not, just
because of the very nature of flight....with race cars, you can
always compare lap times, 1/4 mile times, etc., but with the
varieties of flight conditions, I can't tell for sure if any more
power is being produced. My primary reason for doing this job was
inspiration that I got when reading the April 2012 issue of Kitplanes
magazine about making headers for a 540 Lycoming, I think it was.
Also, I had two straight pipes before and it was pretty noisy, and I
wanted to try to get the sound a bit more controlled.
To order the collector, I had to supply Burns with cam timing, valve
lift and size, port size, engine size, primary exhaust diameter,
desired rpm where the engine will run, etc., and they run those specs
through their design-X program and give you the recommended specs for
the collector and the diameter and length of the megaphone and the
reverse cone on the end. The reverse cone is said to extend the
torque range. I have to admit that I did not make the primaries the
exact length that I should have. To do so would have taken too much
time and effort.....I may do so in the future. This will require
making the original #3 and #4 pipe the same length as the original #1
and #2 pipes which are currently a bit longer. This means snaking
some tubing in a roundabout way so that all the primaries will be the
same length, and then the system will be tuned properly, and I'll get
the most benefit from the collector and megaphone. But I'm happy with
the system for now, and when I get bored, I'll fire up the TIG and
modify those #3 and 4 pipes.
Incidentally, I tried "back-purging" for the first time on this
job...stainless steel welding looks like crap without it....and was
amazed at how good the welds that I did came out. Burns has good
information on their website as to how to do this.
Lynn Matteson
Kitfox IV Speedster, taildragger
Jabiru 2200, #2062
Prince prop 64 x 30, P-tip
Electroair direct-fire ignition system
Rotec TBI-40 injection (sleeved to 36mm)
Status: flying with 1279 hrs... (since 3-27-2006)
On Jun 8, 2012, at 10:20 PM, dons701 wrote:
> <burdon1@comcast.net>
>
> Hi Lynn, gotta ask. Any noticeable changes in power??
>
> --------
> Zenith 701 #76120
> Jabiru 2200A #2456 95 hours
> Sensenich Wood 64-PJ-36 Prop
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=375070#375070
>
>
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