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Odyssey FL250 / Re: Tuning up a new FL250 Ody rebuild
« Last post by LiveWire on November 25, 2020, 06:57:11 AM »
You could be lean at idle, but rich at WOT. The pilot jet and air bleed screw is idle to 1/4 throttle. The main primarily affects 3/4 to WOT. The needle is in between those. Something really common with the FL350s is since the stock pilot jet is too big, it loads up. People will drop the main and find the machine runs better. That is because it burns off the excess fuel faster. Then one day they hold WOT for a mile and burn it up.
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Odyssey FL250 / Re: honda odyssey 250/ kustom kraft knowledge
« Last post by Marty on November 24, 2020, 03:19:56 PM »
Hey Wozzy, That's super cool! Someone may come along to help with more info. and pricing. I have seen pictures of these modified oddysey's for racing leagues but only on the interweb. Curious does it run and also does it have rear modified shocks? Either way it's nicer than mine ;D
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Odyssey FL250 / Re: Tuning up a new FL250 Ody rebuild
« Last post by Marty on November 24, 2020, 03:12:04 PM »
Wow that's interesting. I wouldn't of guessed the hanging at idle could be a lean issue! I pulled the spark plug and brought the piston up to top dead center and took a look. The piston confirms it is running rich. Also the bog sound going wide open sounds like whaaaaa which sounds lean as well. The clip, pilot and main jets are identical on both carbs. Two things I'm going to try are to bypass the check valve tee in case the carb is being over pressurized (tank fuel return is working but worth a shot). Install the other carburetor to see if there are improvements and double check the rebuilt problem one. Only I could end up with a black/oily spark plug and exhaust while running into a lean condition. :o  Oh well, I'll keep at it. Thanks for your reply, Marty.
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Odyssey FL250 / Re: Tuning up a new FL250 Ody rebuild
« Last post by LiveWire on November 24, 2020, 11:21:35 AM »
It is probably more due to being freshened up than the bore size. The oil leaking is coming from the mixed fuel after the fuel is burned. I would say you might be able to jet the pilot jet size down from where it is, but that would make the dropping back to idle problem worse. That is a sign of being lean at idle. Turn the air bleed in and see if that helps. I would check your main jet by looking at the plug color after shutting down right after the bog and check plug color. If wet/black, drop the main jet size. Compare the pilot and main jet sizes in both machines and the clip position on the needles.
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Odyssey FL250 / honda odyssey 250/ kustom kraft knowledge
« Last post by wozzy on November 24, 2020, 09:32:25 AM »
hello I am new to this site and am looking for some help if anyone is able to help me. I know this was originally a odyssey 250 that was sent to Michigan and built into this. the motor is all modified with a liquid cooled system. I'm looking to sell it but know have a clue as to what something like this sells for. can anyone help me. thanks to anyone that can in advance.
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Commerce / honda odyssey 250/ kustom kraft knowledge
« Last post by wozzy on November 24, 2020, 09:26:25 AM »
I am looking to sell this bad boy but need some people to help me as to what the value of such a thing is. it was originally a odyssey 250 that was sent to kustom kraft and rebuilt in this. was a bad ass upgraded 250 liquid cooled motor, and many other upgrades. thanks in advance for anybody that is willing and able to help me out
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Odyssey FL250 / Tuning up a new FL250 Ody rebuild
« Last post by Marty on November 21, 2020, 04:42:05 PM »
Throwing out a bunch of new rebuild stuff.....   I have two odyssey's a 1983 and a 1979 both kept pretty original. Both engines have been bored up to .25 oversize. I have noticed both seem to drip a lot more oil around the exhaust then they originally did. Has anyone else done a rebuild bored up a size and experienced this? My uneducated guess is that with a larger bore it is able to pull more fuel/oil into the carb. I'm mixing at 32:1 with Amsoil dominator 2 stroke oil (it has a pretty low flash point). Open to any oil suggestions.
     Another thing I noticed the exhaust schematic show a circular cardboard gasket. Tried this but found it would not fit on the stock exhaust. A quick measurement showed why. The exhaust connector off the engine is about an 1 1/4" and the pipe that connects to it slides in about an 1 1/4" so there's really no room for it to fit. Curious what others are doing.
     The 1979 rebuild I was testing out today starts right up but hangs a while before dropping back to idle. Since this was vacuum/pressure tested and passed,  I tried spraying starter fluid around gasket, seals, carburetor but didn't notice any rpm increase. So took it out for a quick spin. This one is faster than the 83"!  Next problem is runs right until you try to go to wide open throttle - then immediately bogs. The 1983, same build, runs at all speeds. Both are run with non ethanol gas and carburetors have been rebuilt. I'm guessing I'll need to recheck the carb, maybe jets? Anyway if anyone can point me in the right direction I'd appreciate it. Sorry for the long post, Marty.
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Odyssey FL250 / Re: Leaving clutch off during initial startup/testing?
« Last post by Marty on November 21, 2020, 04:11:00 PM »
Thanks Livewire, After reading your post I played it safe and installed the clutch. To keep the clutch from engaging during testing I left the belt off and wrapped about 20 ft. of paracord around the clutch. This gave the clutch something to press against so it wouldn't snap all the way out. Worked really well. Thanks for your advice, Marty.
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General Discussion / Honda Odyssey Mechanic Wanted Illinois
« Last post by putnam73171 on November 20, 2020, 05:04:13 PM »
Can anyone refer me to a Honday Odyssey Mechanic in Illinois or surrounding areas?  Thank you.

Brian Putnam
putnam73171@att.net
281-380-8111
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Odyssey FL250 / Re: Leaving clutch off during initial startup/testing?
« Last post by LiveWire on October 23, 2020, 06:59:54 PM »
Idle is probably OK. It will rev very gast and it would be easy to over rev. There will be more vibration without because the weight of the clutch acts as a flywheel.
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