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Fritz The Cat
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« on: January 07, 2012, 09:07:48 AM » |
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But I gotta ask it.  Is the sound of the exhaust an indicator of how rough or smooth the engine is running? the old girl is running fine and there is no hint of hesitation or any other anomaly. She accelerates smoothly and idles just fine. But the sound of the exhaust (2 Brothers Racing) sound rough at low speeds/idle. I've enough sea foam, Techron, etc. through her to know that the next step would be tearing into the carbs but since the only indication of rough running seems to be the sound of the exhaust, I think i might be chasing windmills. And BTW: The tach is rock solid stable, FWIW. |
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Bone
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« Reply #1 on: January 07, 2012, 09:33:23 AM » |
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Your exhaust pressure is at it's lowest when this is happening. Lay 20 dollar bills on the ground below the exhaust and blip the throttle, watch the pressure increase.
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olddog1946
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« Reply #2 on: January 07, 2012, 09:36:44 AM » |
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The cobra exhaust in my Valk sounds the same way. I just think it's due to the lower back pressure, don't worry about it.
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VRCC # 32473
US AIR FORCE E7, Retired 1965-1988
01 Valk Std.
02 BMW k1200LTE
65 Chevelle coupe, 1986 Mazda RX-7 with 350/5spd, 1983 Mazda RX-7 with FOMOCO 302/AOD project, 95 Mustang GT Convertible 5.0, 5 spd
Moses Lake, Wa. 509-760-6382 if you need help
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Valkpilot
Member
Posts: 2151
What does the data say?
Corinth, Texas
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« Reply #3 on: January 07, 2012, 12:02:44 PM » |
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But I gotta ask it. Is the sound of the exhaust an indicator of how rough or smooth the engine is running? the old girl is running fine and there is no hint of hesitation or any other anomaly. She accelerates smoothly and idles just fine. But the sound of the exhaust (2 Brothers Racing) sound rough at low speeds/idle. I've enough sea foam, Techron, etc. through her to know that the next step would be tearing into the carbs but since the only indication of rough running seems to be the sound of the exhaust, I think i might be chasing windmills. And BTW: The tach is rock solid stable, FWIW. Mine with the TB 6 x 6 does the same thing. |
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VRCC #19757 IBA #44686 1998 Black Standard 2007 Goldwing   |
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Jess from VA
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« Reply #4 on: January 07, 2012, 12:51:19 PM » |
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I think idle is supposed to be 900.
Twist it up to 1000 (just a bit) for a smoother idle, maybe.
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Skinhead
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Posts: 8731
J. A. B. O. A.
Troy, MI
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« Reply #5 on: January 07, 2012, 01:12:56 PM » |
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Your exhaust pressure is at it's lowest when this is happening. Lay 20 dollar bills on the ground below the exhaust and blip the throttle, watch the pressure increase.
Will a $1 work? |
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 Troy, MI |
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Farther
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« Reply #6 on: January 07, 2012, 01:15:02 PM » |
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I found that using $100 bills will provide more valid results.
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Thanks,
~Farther
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Fritz The Cat
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« Reply #7 on: January 07, 2012, 01:46:52 PM » |
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Thanks. ain't gonna worry bout it no moe.  |
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salty1
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Posts: 2359
"Flyka"
Spokane, WA or Tucson, AZ
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« Reply #8 on: January 07, 2012, 01:54:49 PM » |
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Good because you probably would have been chasing windmills. Enough cleaner seems to have been put through the bike to clean out the slow speed jets. You know, you might want to check your plugs. A fresh set of plugs always seems to make em run better.   |
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My rides: 1998 GL1500C, 2000 GL 1500CF,2006 GL 1800 3A   |
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BnB Tom
Member
Posts: 1708
Where'd old times go?
Frisco, TX
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« Reply #9 on: January 08, 2012, 06:02:30 AM » |
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Your exhaust pressure is at it's lowest when this is happening. Lay 20 dollar bills on the ground below the exhaust and blip the throttle, watch the pressure increase.
When I used to have a Harley, I had to lay (out) $20 bills ALL OVER the place just to keep it running!  |
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Fritz The Cat
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« Reply #10 on: January 08, 2012, 06:06:28 AM » |
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Good because you probably would have been chasing windmills. Enough cleaner seems to have been put through the bike to clean out the slow speed jets. You know, you might want to check your plugs. A fresh set of plugs always seems to make em run better. Yep, put a fresh set of Iridium plugs in right after I bought her. |
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