mmmmm ... On Sep 9, 2009, at 10:56 PM, Kyle Munz wrote: > Yep, cover and snorkel are installed as prescribed. No leaks and no > air getting in except through the K&N. > > -Kyle > -Sent from Houston, TX, United States > > On Wed, Sep 9, 2009 at 9:31 PM, Graham Rogers <[email protected]> > wrote: > Kyle, I guess this is already been covered - you are reinstalling > the cover and snorkel on the filter right? > > On Sep 9, 2009, at 9:20 PM, Kyle Munz wrote: > >> I finally got back to my yogurt cup tuning. I cut it down so that >> the large diameter of the yogurt cup was the same as the inside >> small diameter of the K&N cone. Now it sits on the bottom of the >> cone snug against the pleats and is about 3" below the opening of >> the cone. This really didn't make much difference though with the >> lean popping behavior. Slightly worse than it was with the full >> size cup, not quite as bad as just the straight K&N. So, since I >> want the K&N to work, I guess this leaves the carbs. Before >> checking the jet size, I'm wondering if it would be worth it to >> try quarter or eighth turn adjustments to these? The PO said they >> were rebuilt carbs so it's possible those aren't set right, >> especially since the limiter caps are all removed. My buddy has >> the tiny carburetor drill bits for checking the jet sizes. I'll >> see if I can't borrow those off of him. >> >> Pictures of the trimmed cup and mp3 of both the OEM airfilter and >> the K&N are on my blog. http://munz.kicks-ass.net/nighthawk/?p=295 >> >> -Kyle >> -Sent from Houston, TX, United States >> >> >> On Fri, Sep 4, 2009 at 10:49 PM, Dennis Hammerl >> <[email protected]> wrote: >> That's the largest cup I've seen so far in one of those. !! Mine >> is about 2/3 that size and truncated. Now, you have to admit it >> works. The remaining issue is still to be addressed. Get a small >> (stubby) Phillips screw driver and remove one of the outer float >> bowls (carbs on bike) and check the main jet size. Actually check >> the slow jet size too. The OEM is #115 and #35. What you are >> describing is happening during "transition" (from all jets as a >> collective to main) As the revs climb above the trouble zone and >> the air speed (that's what this is all about, remember?) increases >> enough to atomize a lot of fuel, it goes good. I'm not there and >> have no crystal ball, this is my best guess at this point. You >> have increased air speed a ton and it does run better. Now you >> have to dig in. Even if the jet sizes are correct, there is no >> reason to believe it. That's where sized wires come in. I can >> supply you with the the wire sizes (and wires) to check that they >> have / have not been reamed to some new size. your bike has been >> altered which you cannot deny. Does it go deeper ? Let's see. When >> you get it right, that gonzo cup might have to be replaced with a >> smaller one. From what you say, you've made great progress with >> your problem. The last little bit always takes the most work. >> You're gonna' get it right. Hang in there. >> >> Just a note, yogurt cups are for California models. 49 state >> models use soft drink cups. >> >> --- On Fri, 9/4/09, Kyle Munz <[email protected]> wrote: >> >> From: Kyle Munz <[email protected]> >> Subject: [Nighthawk Lovers] K&N filter saga continues. >> To: [email protected] >> Date: Friday, September 4, 2009, 10:41 PM >> >> >> Ok, Per Dennis' advice I reduced the interior volume of my cone- >> shaped K&N filter, and that definitely improved things but it's >> not quite perfect. >> I couldn't locate a dixie cup (when you need one they're nowhere >> around) so I went with an empty yogurt cup. Sorry, I don't know >> what flavor. Anyhow, this took the bike from popping constantly >> and barely climbing above 4grand to a bike that will actually >> start, idle, and rev. >> It still is off just a tad. The exhaust sounds a bit more "hollow" >> that it did before. Can't describe it better than that. >> I've recorded an audio file of the exhaust popping and posted it >> on my blog at http://munz.kicks-ass.net/nighthawk/?p=280 for >> anyone interested. It starts at 2K, moves up the 3K, then to 4K >> where it starts to pop a bit, and then starts to pop alot as I >> move up to 5K. After 5K it takes off like a champ and definitely >> has more power in the higher revs than it did before, but I want >> the lower RPM rideability I hear so much about ;) The end of the >> audio file is a quick rev up to 8K with no popping, it's just >> trying to sustain it between 4 and 5 that is kind of rough. >> >> So, do I keep tweaking my yogurt cups or is it time to monkey with >> the jets? I really don't want to monkey with the jets :) >> Also, all test rides were done with the lid and snorkel bolted in >> place. >> >> >> >> >> -Kyle >> -Sent from Houston, TX, United States >> >> >> >> >> >> >> >> > > > > > > >
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