Final configuration of my 1992 NH750: Hodge exhaust mod 5x 1/4 in holes Uni filter #115 main jets standard #38 slow jets adjustable needle on 3rd clip position ( same length as stock needle with 1x 1/32 #4 washer) 3 1/4 turns out on pilot jet screws (750 ft above sea level est.)
you could spend $100 for a dynojet or Factory Pro jet kit, or just order the jets and use a washer to shim the stock needle. You can get the part# and buy the jets here: http://www.pjmotorsports.com/street-bikes-fitment-list.html check out these links for other carb related info. Paul’s carb pages: http://www.hondanighthawks.net/carbhelp.htm Factory pro tuning instructions: http://www.factorypro.com/index.htm Fuel screw adjustment: http://www.hondanighthawks.net/carb05.htm synchronization: Bench sync: http://nighthawk-forums.com/index.php/topic,2961.msg32421.html#msg32421 Full sync: http://www.hondanighthawks.net/carb11.htm Also if you need a manual go to timtaylor.net clik on scooters then manuals he has the service manual and clymers for you're bike. On Feb 23, 8:04 am, "Allen Thomas" <[email protected]> wrote: > Don't be scared I did it last summer and know what settings you need I just > need to look for my post with them. Fixing the carburation was the single > best upgrade $ I have spent on the bike. Even if you don't change out the > main jets at least stick 2 #4 washers under the needles and turn out the > pilot screws to 3 or 3 1/4 turns. That will fix all the idle and mid-range > issues, but the lack of passing power on the highway can only be fixed by > larger mains. Now I have a modified stock exhaust and a Uni filter on mine if > you go to a V&H exhaust and K&N you could probably go up a main jet size. > Also if you get a jet kit get a Factory Pro Dynojet makes you modify the > slides and they use proprietary jets and needles. Factory pro uses Kehin > parts. > Sent via BlackBerry by AT&T > > > > -----Original Message----- > From: [email protected] > > Sender: [email protected] > Date: Wed, 23 Feb 2011 12:40:56 > To: <[email protected]> > Reply-To: [email protected] > Subject: Re: [Nighthawk Lovers] Re: air filter replacement procedure 96 > nighthawk 750 > > Point well taken. I guess I need to seriously consider if I want to retune > the bike or risk a gurgly, goofy detuned situation. I truly don't have the > knowledge to tune a carbureted engine. For now, I've ran a fuel system > cleaner through it in case there is any water in the tank. It already seems > to be running smoother. > Sent via BlackBerry by AT&T > > -----Original Message----- > From: surfswab <[email protected]> > Sender: [email protected] > Date: Wed, 23 Feb 2011 01:14:44 > To: Nighthawk Motorcycle Lovers!<[email protected]> > Reply-To: [email protected] > Subject: [Nighthawk Lovers] Re: air filter replacement procedure 96 nighthawk > 750 > > The "shite" in the carbs will not have arrived there via the air > cleaner, but via "varnished" gas. When a bike sits up a lot (yours is > 15 years old, with only 12,000 miles on it -- indicating it hasn't > been ridden a whole lot), the volatile organic compounds in the gas > evaporate, leaving behind a syrupy sludge that clogs the passageways > in the carbs and prevents them from doing an efficient job. > > It's a typical scenario for any old bike and probably the reason yours > is not idling/performing properly. The remedy is a thorough and > methodical dismantling and cleaning of not just the carbs, but the > petcock and gas tank as well. > > The plastic airbox and its filter are less critical, but in stock form > they are designed to work together to provide just the right volume of > air to the carbs. If you introduce more air -- as you would with a > free-flowing filter like the K&N -- you risk upsetting the fuel/air > ratio the motor needs, maybe even after rejetting. So, using a K&N, > with no other modification, is not automatically a good thing. > > Neither is rejetting, unless you know what you're doing. Even then > it's a fiddly, experimental thing, requiring a lot of tweaking. > > Not trying to scare you away from pursuing it, just tossing a little > practical reality into the mix. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group > athttp://groups.google.com/group/nighthawk_lovers?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Nighthawk Motorcycle Lovers!" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group > athttp://groups.google.com/group/nighthawk_lovers?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
