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| World traveler H2B rebuild http://www.kawi2strokes.com/forum/viewtopic.php?f=13&t=12577 |
Page 11 of 20 |
| Author: | DGA [ Sun Jul 23, 2017 7:48 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
Well it lives again. Got the rear wheel rebuilt and trued up, put the tires on it and then had to deal with the side stand. I used the KZ750 one and turned it around, then cut the foot off it and shortened it until it had the right lean I liked and also fit inside the left exhaust. But, it totally fits inside the pipe, so it needed a large curved bar welding on so I could actually extend it from outside the pipe. I made that and looked at it, the thing looked so silly and you would trip over it when walking past the bike, so I left it off. I will come up with something clever to operate the stand after I figure what to do. I added gearbox oil, and two stroke oil to the tank and bled that down to the pump. Put a 32:1 two stroke fuel mix in the tank and kicked it over a few times. Turned the key on, kicked it twice and it ran! I think the right cylinder is not firing, wasn't as warm as the left and center cylinder. Held the oil pump wide open for awhile, had a reasonable amount of smoke. Pulled that plug and it didn't look bad, cleaned it and put it back in but i'm still not sure it's running. I have the plugs in it from NZ still and the gaps are about .024", it had spark awhile ago when I checked it. Started it up again and said what the hell, clicked it into gear. The clutch dragged bad and the bike was pulling forward, the clutch plates are new and I didn't give them much oil soak time, but I went for a short ride. The gearbox is perfect, all stuff seems to work, but all new, brakes not bed in. The throttle seemed to stick just as I got back so I pulled the clutch in and hit the kill switch, will have to see what's going on there. It seems really lean in the mid range, and I have the needles all the way up, but could be the RH cylinder not running too. |
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| Author: | DGA [ Sun Jul 23, 2017 11:47 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
I changed the plugs for some new B9HS-10 and rode it again. The RH carb had a sticking slide, was just something in the carb body making it stick. I think the RH carb has a blocked idle jet, it seems to come alive on all three when you give it some throttle opening. I have not wound it up at all, so many things need checking still, but it has a nasty hit when the powerband comes in that might be a lot of fun. But the brakes, the front is just not good enough, might just need some bedding and that I have a larger front master than stock so am not getting much pad pressure, and it's just scary like that. I put it away and got on my KZ1100 Spectre, gee, I almost dropped it off the centerstand, the weight difference is huge, and the H2 feels like a light little bike compared to that thing, and it's CG is so low, makes it feel like a fun little bike, well it will be I can tell. |
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| Author: | JayDav [ Mon Jul 24, 2017 5:57 am ] |
| Post subject: | Re: World traveler H2B rebuild |
Awesome!!!!! |
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| Author: | redcloud1 [ Mon Jul 24, 2017 6:49 am ] |
| Post subject: | Re: World traveler H2B rebuild |
You make this restoration stuff seem easy and certainly redefined what it means to 'do work.' To simply say nice job on the build would be a gross misrepresentation! Well done--thanks for the inspiration. |
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| Author: | DGA [ Mon Jul 24, 2017 11:45 am ] |
| Post subject: | Re: World traveler H2B rebuild |
Thank you guys. |
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| Author: | DGA [ Tue Jul 25, 2017 9:29 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
I checked the spark timing, @ 4,000 rpm, it was spot on for all three cylinders. Went a 1/4 turn richer on the idle mixture screws, to 1 1/4 open. Put .03" shims under the needle clips, and went for a longer ride. It has no real bottom end, I think the mixture is that far out and probably needs 2.0 slides, but once it hits 5,000, oh crap. I can't hold on and use the clutch, my ass slides back on the seat, and have to get out of it enough to release the death grip so I can shift up, not an easy bike to ride fast yet. It helps to angle your feet downwards on the pegs to gain some small sense of hanging on under power. I think the shifter is hitting the left pipe on downshifts, need to put a small dent in that pipe. I finally put normal gas in it without oil. The suspension seems stiff, not much travel I think, and not plush or compliant at all, but it does seem to steer well, I need to go try it in a few fast sweepers. No mirrors yet, and i'm in the city so traffic can be a problem if you slow down much. So, a lot to do to make it a nice riding bike. It may never be 'nice', just not designed to be that way ever, but I'll work towards that direction anyway. |
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| Author: | Stev-o [ Wed Jul 26, 2017 5:17 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
Those pipes as well as the whole bike look fantastic. Nice workmanship... |
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| Author: | DGA [ Tue Aug 01, 2017 11:26 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
Thanks Steve... Back from Mid Ohio, dented the LH pipe to clear the shift clevis, leaned the needles two notches, fixed the leaking petcock fuel bowl, fixed the leaking RH carb oil feed fitting, adjusted the chain, adjusted the clutch, and went for a ride. Much better, the midrange power is decent now, I will go one more leaner on the needles and see if it likes that. It still has a really fun 5,000 rpm power hit that seems to go as high as you feel like revving it, and is pretty good under that too. I have a one tooth larger front sprocket on it, and I'm thinking I don't like it for city riding, makes first gear really tall. The brakes are working better, but as expected, I have to use a lot of lever pressure to make it stop. I bought a pair of 2014 Ninja 650 calipers, and they had HH pads in them already. Looks like the 7mm thick stock disc is too thick for the calipers, so I might end up drilling the stock disc off the carrier and waterjet cutting a new lighter one. I want to use both calipers on the same disc, will machine a billet mount that goes around the inside of the fork leg and mounts the other caliper on the back of the leg. |
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| Author: | DGA [ Wed Aug 09, 2017 7:48 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
Getting the jetting closer now. Had to pull a lot of midrange fuel out, have the needles on the lowest setting (clip on top) and once I richen the idle mixture I think I will have to go to the next size smaller needle jets. I think with stock exhausts the H2 wastes fuel out the exhaust, and with chambers that are somewhat tuned for midrange, that fuel is kept in the cylinder, so I have to lean to compensate. I weighed the bike, 435 lbs no fuel, with gearbox oil. 48/ 52 front to rear weight bias, not bad. |
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| Author: | Ja-Moo [ Wed Aug 09, 2017 9:40 pm ] |
| Post subject: | Re: World traveler H2B rebuild |
One size on the NJ is a ultra small change. Maybe less than one clip. |
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