giff 
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« on: June 22, 2008, 12:38:05 PM » |
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Hey there guys! Glad to be here. I just got my nighthawk. It's a 85 450 with, of of right now, 5199 miles on it. I love it! Unfortunately the previous owner "cleaned" the carbs. and he wrecked them pretty good. It runs, but only smoothly up until about 4 or 5k then there is absolutely no power. I am looking for a second set of carbs for this machine. If anybody has some for sale that run nicely. PLEASE PLEASE PLEASE let me know! thanks!  |
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85' nighthawk 450 current
candy empire blue
mileage: 5199
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coffee_brake
--- NHF---
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Bike: '92 CB750 (sold and missed), '05 Concours, '86 VFR700
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Jenn in "Jaw-Juh"
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« Reply #1 on: June 22, 2008, 01:54:24 PM » |
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Hi Giff, looks like a lot of fun!  |
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83 550sc
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« Reply #2 on: June 22, 2008, 05:28:52 PM » |
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All these great looking old bikes, mines looking more like a has been then a fixer upper.  It looks like it's running way lean by the looks of the pipes, I'm thinking the vacuum cylinders are stuck closed. (justa guess) |
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3 old sohc cb750 (lost intrest)
83 550sc (rider)
83 650sc (project bike)
Marty
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Hondo
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Bike: '83 CB1000C, '11 KTM 990 ADV, '01 KLR650
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« Reply #3 on: June 22, 2008, 05:54:40 PM » |
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Run some Seafoam through the fuel system. And to The Forums! |
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Puppysnake
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Bike: '84 Nighthawk S, Royal Enfield Bullet 500
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"Yes, it adds up."
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« Reply #4 on: June 22, 2008, 11:48:57 PM » |
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That looks like a fun ride! Welcome aboard.
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I must retreat to my place of Zen and meditate on this.  |
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giff
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« Reply #5 on: June 22, 2008, 11:53:10 PM » |
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Well me and a friend were talking last night and he just took apart his carbs on his 82 nighthawk 450. he asked if i had the rubber caps or plugs that go in the float bowl. (#25 in the clymers manual on page 203) and I don't. would this cause the bike to run rich, like it is?
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85' nighthawk 450 current
candy empire blue
mileage: 5199
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Hondo
Nighthawk-Forums.com
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« Reply #6 on: June 23, 2008, 12:01:48 AM » |
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I would think that if they are supposed to be there & they aren't, that this could be your problem.
Not familiar with the carbs you have or if they were removed intentionally or not, but you might try installing a new set & see what happens.
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detdrbuzzard
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« Reply #7 on: June 23, 2008, 07:20:54 AM » |
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hello and welcome to highthawk forums giff, any alteration to the carbs will cause problems. i would replace the missing parts. if you do need another set of carbs you can take them off about any cb/cm 450. if its an automatic check that the carbs are the same size
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'75CB750k, '79CB750 super K,
'84aspy '93gl1500se
'79cb750f, '8
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giff
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« Reply #8 on: June 23, 2008, 02:35:38 PM » |
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hello and welcome to highthawk forums giff, any alteration to the carbs will cause problems. i would replace the missing parts. if you do need another set of carbs you can take them off about any cb/cm 450. if its an automatic check that the carbs are the same size
Even the older cb450s? like the ones before the nighthawks? |
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85' nighthawk 450 current
candy empire blue
mileage: 5199
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detdrbuzzard
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« Reply #9 on: June 24, 2008, 08:13:07 AM » |
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the carbs from a dohc 450 probally won't work. i think the jetting may be different because we have emission controls on our bikes. i would stay with the newer 450s '82- '86
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'75CB750k, '79CB750 super K,
'84aspy '93gl1500se
'79cb750f, '8
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