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Dark Knight
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« on: July 06, 2012, 03:44:02 PM » |
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Bought a 2003 Valkyrie last week with factory exhaust. I want to put the cobra 6 into 6 exhaust on the bike. Does anyone know if I will have to get the carbs rejetted?
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Momz
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« Reply #1 on: July 06, 2012, 04:31:28 PM » |
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My 98 is not rejetted,...but it does have the baffles installed.
All bikes are just a bit different, but if your not going to run baffles, then you may want to install adjustable carb needles.
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 ALWAYS QUESTION AUTHORITY! 97 Valk bobber, 98 Valk Rat Rod, 2K SuperValk, plus several other classic bikes |
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olddog1946
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« Reply #2 on: July 06, 2012, 05:42:30 PM » |
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Had cobras on mine, a little burbly at low speed, but ran fine and sounded like a porsche on steroids with stock jets...I did return to the oem pipes. The older I get the less noise I seem to like.
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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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Scott in Ok
Chief Worker Ant
Administrator
Member
Posts: 1157
Oklahoma City, Ok
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« Reply #3 on: July 06, 2012, 06:46:46 PM » |
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No, and Yes.
I had a 97 and had Cobra's on it for about 5 years. It ran fine, and never had any issues. Its still running strong, but with a different set of pipes now. On most occasions you will lose a few HP when you install them, and if you want to regain that power, you'll need to do some jetting. I really couldn't tell any difference, seat of the pants.
If it were me and I wanted that specific exhaust for the look or sound, I'll install them and never look back.
-Scott
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Never underestimate the power of stupid people in large numbers!
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Smokinjoe-VRCCDS#0005
Member
Posts: 13848
American by Birth, Southern by the Grace of God.
Beautiful east Tennessee ( GOD'S Country )
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« Reply #4 on: July 06, 2012, 07:42:09 PM » |
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No, and Yes.
I had a 97 and had Cobra's on it for about 5 years. It ran fine, and never had any issues. Its still running strong, but with a different set of pipes now. On most occasions you will lose a few HP when you install them, and if you want to regain that power, you'll need to do some jetting. I really couldn't tell any difference, seat of the pants.
If it were me and I wanted that specific exhaust for the look or sound, I'll install them and never look back.
-Scott
Agree ...I own three Valkyrie's all with Cobra's ( I love the sound ) . Two has not been jetted and one has been....I can't tell a dimes difference in any of them...Go for it they sound sweet   |
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 I've seen alot of people that thought they were cool , but then again Lord I've seen alot of fools. |
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mrprez
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« Reply #5 on: July 06, 2012, 09:07:48 PM » |
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Too bad you don't live down the street, I'd swap out my Cobras and jets for your stockers....
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Wizzard
Member
Posts: 4044
Bald River Falls
Valparaiso IN
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« Reply #6 on: July 07, 2012, 06:57:28 AM » |
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I have cobras on my 2003. I love them but had a flat spot in accel at about 3800 rpm and rejetted with a cobra adj needle kit. Cure it. Only thing I do not like abou them is that they dont have ceramic inserts at the front and they all turn blue in time and nothing you can do about it, but I love the sound.
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 VRCC # 24157 |
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Smokinjoe-VRCCDS#0005
Member
Posts: 13848
American by Birth, Southern by the Grace of God.
Beautiful east Tennessee ( GOD'S Country )
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« Reply #7 on: July 07, 2012, 07:34:56 AM » |
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I have cobras on my 2003. I love them but had a flat spot in accel at about 3800 rpm and rejetted with a cobra adj needle kit. Cure it. Only thing I do not like abou them is that they dont have ceramic inserts at the front and they all turn blue in time and nothing you can do about it, but I love the sound.
The one below is ceramic coated been that way about 65,000 miles and still looks great.  This one has the header painted with 1500 degree stove paint...Looks much better than blue rust but does need touched up from time to time.  This one has Rivco heater shields ( nolonger made ) and if you find them they will be $$$  |
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« Last Edit: July 07, 2012, 07:37:11 AM by Smokinjoe-VRCCDS#0005 »
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I've seen alot of people that thought they were cool , but then again Lord I've seen alot of fools. |
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Wizzard
Member
Posts: 4044
Bald River Falls
Valparaiso IN
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« Reply #8 on: July 07, 2012, 07:43:04 AM » |
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I know Joe,, they all look great. Where did you get the ceramic coating? As to the shields, I look for them all the time but they are just outta my reach.
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VRCC # 24157 |
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Momz
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« Reply #9 on: July 07, 2012, 09:25:01 AM » |
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ALWAYS QUESTION AUTHORITY! 97 Valk bobber, 98 Valk Rat Rod, 2K SuperValk, plus several other classic bikes |
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Smokinjoe-VRCCDS#0005
Member
Posts: 13848
American by Birth, Southern by the Grace of God.
Beautiful east Tennessee ( GOD'S Country )
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« Reply #10 on: July 07, 2012, 09:31:30 AM » |
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I know Joe,, they all look great. Where did you get the ceramic coating? As to the shields, I look for them all the time but they are just outta my reach.
Got mine coated here...They do ship everytime I've been there UPS is coming and going....I gave $155.00 to have the header's pipe done. http://www.amr-coatings.com/ |
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I've seen alot of people that thought they were cool , but then again Lord I've seen alot of fools. |
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