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Author Topic: Newbie with a Nighthawk 650  (Read 1315 times)
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ford141 Topic starter
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« on: March 23, 2011, 09:06:36 PM »

About 3 years ago I was on the lookout for a street bike.  I had a lot of dirt bikes when I was in high school, but never a street bike.  I really love the sound of a high-revving inline 4, and I'm also a sucker for classics that may be down on their luck in need of some TLC.  I also didn't have a lot of money to spend, and wasn't sure if I'd like to ride on the street that much, so anything I got had to be cheap.  I ran across this bike on Craigslist, listed with no pictures.  I usually don't go to look at something if I haven't seen pictures of it first, but I felt adventurous that day, so I went for it.  I'm very glad I did! 

The bike is an '83 Nighthawk 650 with 25K on the clock.  It isn't pretty at all, but it fired right up when he hit the key, and purred without any bad noises or smoke.  It was kept outdoors, but on concrete with a cover, so there isn't much rust, just a really poor excuse for a paint job.  I paid $600 for it and he threw in a helmet and bike cover with the deal. 









These pics were taken the day I brought it home, but it looks almost the same to this day, except I removed the Hondaline luggage rack and highway pegs to clean up the appearance.  I've only put 5K miles on it in the last 3 years, but it has paid for itself many times over by now just in the gas savings alone (my daily driver is a V10-powered F250).  It has been a fun little bike and I've had to do very little to it.  I did replace the spring on the cam tensioner and I put a used front wheel on the front because the original one was bent. 

Currently the bike is still bone stock, but I am planning to so a few modifications to it in the near future.  I have avoided making this a "project", as I have many other projects and I didn't want this to consume all my time and funds, but after 3 years it is time for a few updates.  I've always hated the square headlight on it, and have been scheming a round headlight conversion for some time, which is what let me to this site (awesome info, btw).  I also would like to add some type of windscreen to it so I have something to tuck behind on the highway, but I hate the look of them.  I'm hoping that I can pick up one of those round "cafe racer" style fairings that wraps around a round headlight.  They would only offer minimal protection, but I think they look pretty good.

I'd also like to open up the sound of the motor a little more so I can hear the 650 scream.  I don't want to spend money on an aftermarket exhaust system, and I don't want straight pipes, so I'm considering putting pod filters on the carbs and maybe drilling some holes in the muffler endcap.  From doing a little research on here it looks like I would have to rejet with these mods, but that's not a big deal to me.

Eventually I would like to repaint the whole bike to get rid of the horrible spray-can flat red paint job.  But, like I said, I don't want this to be a project, so it may have to wait a few years until it gets done.  In the meanwhile I'll keep riding, tinkering and enjoying it!
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fishball
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« Reply #1 on: March 23, 2011, 09:13:32 PM »

Welcome Ford, even with the flat red color and square headlight she is still a sweet bike.  Nice price too.
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Dan
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HandsomeSteve
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« Reply #2 on: March 24, 2011, 03:40:48 AM »

 welcome

Great price on the NH.  I have a big truck too and been spending $500+/mo. on fuel.  NH should help to knock that figure down when the weather warms up a bit. 
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« Reply #3 on: March 24, 2011, 06:28:08 AM »

Welcome Ford - nice looking bike.  Haven't heard much about the exhaust mod for the 650.
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« Reply #4 on: March 24, 2011, 06:33:23 AM »

 welcome
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« Reply #5 on: March 24, 2011, 07:45:48 AM »

These pics were taken the day I brought it home, but it looks almost the same to this day, except I removed the Hondaline luggage rack and highway pegs to clean up the appearance. 

If you're not going to use the rack and want to sell it please PM me!
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« Reply #6 on: March 24, 2011, 12:18:07 PM »

 welcome to the forum.

Don't know much about those 650's so can't really offer much help to your questions. However I have notice a trend about the pod filters. And the trend is to avoid them like leprosy. Apparently even after re jetting they are still problematic. Mostly because the difference between air flow to the outside carbs vs. inside carbs. The air box evens all this out but once you take that away your left to the whims of physics. "Arrr physics be a harsh mistress".

You could probably take out the baffles and drill some holes through them to open up the exhaust a little. Not sure what else would need to be done to counter that though. Perhaps the washer mod but there could also be some re jetting if you went that route. Like I said I'm not that familiar with the 650's so this is all speculation on my part.

Where are you from? You going to come to the rally?
http://nighthawk-forums.com/index.php/topic,8301.0.html



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« Reply #7 on: March 24, 2011, 02:55:44 PM »

 welcome!!
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ford141 Topic starter
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« Reply #8 on: March 25, 2011, 10:25:25 PM »

welcome to the forum.

Don't know much about those 650's so can't really offer much help to your questions. However I have notice a trend about the pod filters. And the trend is to avoid them like leprosy. Apparently even after re jetting they are still problematic. Mostly because the difference between air flow to the outside carbs vs. inside carbs. The air box evens all this out but once you take that away your left to the whims of physics. "Arrr physics be a harsh mistress".

You could probably take out the baffles and drill some holes through them to open up the exhaust a little. Not sure what else would need to be done to counter that though. Perhaps the washer mod but there could also be some re jetting if you went that route. Like I said I'm not that familiar with the 650's so this is all speculation on my part.

Where are you from? You going to come to the rally?
http://nighthawk-forums.com/index.php/topic,8301.0.html






Thanks for the advice.  After a bunch of reading on here I've been getting the same feeling on the pod filters.  I don't know, I guess I'll have to think about it some more, I don't want to do anything that would hurt the performance of the bike, but I do like the look of them and I think it would sound a little cooler with them.  Maybe I'll just try opening up the exhaust a little.  I've seen some exhaust mods for the newer 750s, but I haven't seen anyone modifying the 650 exhausts.  Maybe I'll just keep it stock like it has been for the last 3 years.  Just looking to change things up a little.  Like I said, I don't want this thing to turn into a project.  I've got a Prairie 650 with a blown motor that needs rebuilt, still need to finish the 472ci for my 79 F350 pulling truck, my other '79 Ford needs some body work and a paint job, and my 04 F250 daily driver needs some rust repair on the bed...  too many projects.

And vert, you got mail.
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ariwhiteboy
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« Reply #9 on: March 26, 2011, 04:59:53 AM »

welcome to the forum! $600 for that?! Where do y'all keep finding these deals?!  DirtDOG  Great looking bike, take care of it and ride safe.  thumb
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« Reply #10 on: March 26, 2011, 12:32:42 PM »

That's an awesome deal for $600.

I knew it wouldn't be long before someone tried to jump on that Hondaline rack. Those things are pretty desirable to many riders.

One thing that may help you is that many of the parts on the 1983 650 and the 1983 CB550SC are interchangeable. The 550 was just a 1-year model, so not a ton of spare parts out there for it either, but just something to keep in the back of your mind.
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ford141 Topic starter
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« Reply #11 on: March 30, 2011, 06:20:00 AM »

Finally snapped some new pics of the bike yesterday.  Last pics were 3 years old.  Doesn't look much different though, except for being very dirty.



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ford141 Topic starter
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« Reply #12 on: March 30, 2011, 06:22:10 AM »

Oh, and the oil spot under the bike is from the bike.  Seal around the shifter shaft is shot, really need to get that fixed.  Been leaking since I bought it, but it is really bad now.
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