Guys, The timing for the Kaw 440 is specificed in the manual as 22 deg BTDC.
The coil does indeed fire both plugs at the same time. All engines have some "klank" in them when turning them back and forth. If you had a bad rod, you would not be turnning over the engine. If piston to head clearance was a problem, the plug ground eletrode would not be welded, but bent or smashed into the center electrode. If it is indeed welded, then it got to hot. It can't get to hot without the piston getting too hot, i.e. melted. The jet size sounds right. Do you have the primer ports on the carbs covered, or if you are using a primer, make sure you don't have leaky hoses or primer pump. Seeing as you are auto-xing, heat build up should not be a real issue, but if you don't get a good cool down between runs, you could be having a problem with the CD box. They were designed to run in the winter. You know - cold. If the CD box gets too hot, it will malfunction. If you have your CD box mounted in the orignal position, you may want to move it away from the engine to a spot that is much cooler. When I ran the Kaw in my Red Devil, I moved the CD box into the drivers compartment and ran the wires thru the fire wall. The coil should also be moved to a cooler area where fresh cool air can get at it. Is your engine hard starting and will not seem to idle smoothly ? If so, you most likley have bad seals and they will need replacing. Bad seals will affect the jetting, but will be consistant and can be adjusted for. Richard ----- Original Message ----- From: "Chris Reinhardt" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, September 25, 2006 11:48 AM Subject: Re: [F500] Help I don't know what to do anymore > Chuck, I agree, the big end bearing might have dropped a couple of rollers. > Your engine theory is a little rusty though.... It fires the spark @ 20 to 30 degrees roughly BTDC, but the motor ignites @ TDC or after. If it fired BTDC, it would ping and or detonate. Somethine else to think of, a serious pre-ignition, could cause a rod bearing failure, so that might be an end result > > CR > > Chuck Voboril <[EMAIL PROTECTED]> wrote: > John, > The broken rod theory only fits up to a point. Ker-thunk on rotation and > smashed electrode are pretty good smoking guns..but. > > The less than adrupt stoppage with oddball sound prior to losing that one > cylinder seems out of line with a broken rod. > > But maybe it still isn't broken completely in half or didn't break all at > once. > > If only part of the rod big end opened up and the piston started kissing the > plug more and more that might explain the odd noises before loss of that > cylinder. Since actual ignition firing is well before TDC, a mechanical > "kiss" would be spaced after a firing. > > > Chuck > > > > > > >From: "John Vriesinga" > >Reply-To: [email protected] > >To: > >Subject: Re: [F500] Help I don't know what to do anymore > >Date: Sun, 24 Sep 2006 22:35:24 -0400 > > > >>Faulty electronics also doesn't appear to explain why you melted one > >>electrode and the other is perfect, or is it? > > > >Both plugs looked beautiful prior to the last run. I noticed that the > >engine started to sound ratty, like it was firing more often than it was > >supposed to. There was the steady drone of the usual firing but in between > >there was a ragged sounding firing tha sounded like it was limited to one > >cylinder. Then it suddenly took to firing on one cylinder only ( when the > >electrodes fused toegether I imagine) and finally it shut down completely. > > > >>What is your timing set at? At least tell us where you are in the stator > >>slots. If the stator is rotated as far as it wil go CCW that is max > >>advance. Estimate the gap to the end of the CCW travel.(looking from mag > >>end of motor.) > >> > >>Then, what is your jetting? Fuel you are using? > > > >Using Sunoco 94 through 2 36mm Mikuni with 240 jets. > > > >>Dual port fuel pump with a very weak or intermittent output to one > >>cylinder? > > > >I've got the regular old mechanical pump on. I disconnected the electric a > >while ago thinking that it might be overfilling the carbs. > > > >>Now that might possibly be temperature dependent. > > > >>Crankcase pulse pump giving up when motor is hot and more fuel always left > >>in one bowl then other. Then cornering force takes that low fuel level > >>cylinder totally lean first? > >>-kinda reaching here :-> > > > >Sounds to me like it's time for a completely new engine. > > > >JV > > > > --------------------------------- > Stay in the know. Pulse on the new Yahoo.com. 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