My 86 gl 1200 does not need the mod.
---Original Message--- From: [email protected] Sent: 2/22/2012 12:38 pm To: [email protected] Subject: Re: [Nighthawk Lovers] Re: NH 650SC Carb Gasket On my '96 750 NH two #4 washers per needle are the best set up. I have done the same thing on a 93 Suzuki gs500e, and I believe also on a '84 GL1200 (Allen?), all giving really good results. Javier. On Wed, Feb 22, 2012 at 2:23 AM, surfswab <[email protected]> wrote: > <I think someone put some > shims in there and the bike seems to run rich.> > > Much as I hate to admit it, that may be something the PO actually did > right. Hondas tend to be cold-blooded (slow to warm up and run right > and a characteristic mid-throttle hesitation) because the carbs are > set purposely lean from the factory to avoid running afoul of the EPA. > > A common mod to improve throttle response is to insert two Radio Shack > #4 washers under the needles, in lieu of a trial-and-error rejet. It > improves performance throughout the range. > > I won't let the PO off entirely, though. It depends on whether he > used the correct washers. I forget the exact measurements of the > washers, but I know #4 works best. Of course, if he used some other > washers out of a can he had lying around, he might still be the dufus > we've accused him of being ;-) > > Anyway, #4s would only cost ya a couple bucks, and you'd know you had > the right ones. > > > > On Feb 21, 6:21 pm, 85_NH650 <[email protected]> wrote: > > Hi Pat. > > Somehow the ascii drawing got distorted, but you got the picture! > > Thanks for sharing your knowledge with the group. Now I feel better > > about installing these gaskets. I guess the POs were reinstalling torn > > gaskets and used sealant to prevent leaks from the tear and old > > rubber... > > I'll be tackling the needle jet next because I think someone put some > > shims in there and the bike seems to run rich. > > Thanks again. > > Richie > > > > On Feb 21, 12:24 pm, Pat Patterson <[email protected]> wrote: > > > > > > > > > Nice askii sketch btw. That's called a double lip o-ring. In the > > > hydraulics world it's the best but can be fussy to get to lay in the > > > grove properly. You MUST make sure it doesn't get rolled or twisted > > > on install. Don't use any sealant But a light smear of oil (110% no > > > dust or grit) can sometimes help it seal for startup. On fussy > > > sunstrand pumps I've used a very light smear of white lith grease but > > > carbs don't work at 2500psi so you should be ok. > > > > > At 08:02 AM 2/21/2012, you wrote: > > > > > >Hi Bob, > > > > > >Just to clarify, this is what a cross-section of my gasket looks like. > > > >The upper part is more 'rounded' of course and fit the carb's groove > > > >perfectly while the bottom part has a groove inside that runs around > > > >the entire gasket's shape. > > > >Richie > > > > > >Bowl Side > > > > ________ > > > >/ \ > > > >| ______ | > > > >|_| |_| > > > > > >Body Side > > > > > >On Feb 20, 6:26 pm, [email protected] wrote: > > > > > I just looked at a spare carb and was reminded that the gasket is > a molded > > > > > o-ring that matches the shape of the groove in the bowl. The > o-ring looked > > > > > to be round(cross section). > > > > > > > On Mon, Feb 20, 2012 at 1:23 PM, 85_NH650 <[email protected]> > wrote: > > > > > > Hi Guys, > > > > > > > > I finally decided to take the plunge and clean my carbs myself. > I have > > > > > > an 85 NH 650 that had terrible recurring issues with hesitation/ > > > > > > choking/stalling at low speeds while performing fine at higher > speed. > > > > > > I had the jets cleaned a couple of times but the problems came > back > > > > > > within days. This started around the time ethanol was introduced. > > > > > > > > I'm still in the process of cleaning the carbs, but I'd like to > know: > > > > > > 1). which side of the gasket faces the float bowl (bottom part of > > > > > > carb): the rounded side or the 'grooved/flat side? > > > > > > 2). Do I need to use any kind of sealer/compound or RTV (?) type > stuff > > > > > > on the gaskets before installing? Or anything else to 'treat' the > > > > > > gaskets before installation? > > > > > > > > It looks like whoever worked on the carbs before used some type > of > > > > > > gasket sealing stuff and I had to soak/clean up a mess of old and > > > > > > newer material that had deteriorated and clumped into the carbs > and is > > > > > > probably effecting the low jets. We shall see. > > > > > > > > I'd appreciate any help/advice you can give me as this is the > first > > > > > > time I tackle this task to cut down on the cost of having > someone else > > > > > > do it for me. > > > > > > > > Thanks, > > > > > > > > Richie > > > > > Pat Patterson > > > Abbotsford, BC, Canada > > > VA7PDP > > > > > 2001 PT Cruiser > > > 83 450 Honda Nighthawk > > > 78 F350 460/C6 on propane > > > 71 Bronco 302/C4/D20 D44/9" {o===o} > > > > > "Just add Lightness-" > > > Colin Chapman. (1928 - 1982)- 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. > > -- 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. -- 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]. 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