10-30-2016, 09:31 PM | #31 |
Join Date: Oct 2016
Posts: 547
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First Ride!!!
Well, I took her for a spin tonight! Ran real good; I just let the sprocket ride wherever it wanted to and didn't notice anything bad that was chain related. That was just for this little test ride. I didn't even bolt the tank or seat down.
Rode over to a buddys house to show him the Chonda was alive! The first 4 gears are tight and low and very similar to the Honda 6 speed that used to live in that space. 5th is a pretty big drop, which I like; sorta like a wide ratio WR transmission. Overall I think it needs a little higher gearing. It pulls much harder than the worn out 200 for sure!! On my way home I took the scenic route to get a few break-in miles on her. That is when trouble began to brew. The bike has a Voyager dash with a spark plug temperature sensor built in. Here is the dash trend:
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-30-2016, 09:32 PM | #32 |
Join Date: Oct 2016
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As you can see it hit 407 F!!
Ambient in my shop was 75F:
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-30-2016, 09:34 PM | #33 |
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So I pulled the plug, which was tough to get a good picture of being hot and all:
It looks like it is running a bit too lean. Need to buy some bigger jets for the PD27!!
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-30-2016, 09:37 PM | #35 |
Join Date: Oct 2016
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As you can see in the above picture the starter solenoid also needs a mounting bracket made.
Dumped the oil while it was hot so I can get some better stuff in there. Does anyone know what temperature these motors should run at?? Over 400 seems too high.
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-31-2016, 12:45 AM | #36 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
Posts: 25,977
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No idea what temp it should run at; never tried to measure. Perhaps you'd like to try the carb you had on your XR200 motor. I'll bet it's a Keihin. What are the jet sizes in it?
If you feel like splitting the case, I'd be inclined to believe the XR200 six speed will drop into the CB case. You're used to those gears. Thanks for the install pics!
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-31-2016, 06:26 AM | #37 |
Join Date: May 2013
Location: finger lakes NY
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as an fyi, my CB200 (163fml pushrod engine) runs right on the 340-365 range when I am riding... and that's pushing the wngine a bit... if I really flog it, I will see 375-400, and given new engine and tight parts, 400 isn't out of the realm of possibility, however I think your temps will come down a good 50 degrees with a fatter main jet...
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10-31-2016, 09:07 AM | #38 | |
Join Date: Oct 2016
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Quote:
The jetting is stock. I believe the main is a 110. Perhaps with the bigger motor it needs a richer main. Especially with the bigger exhaust and large air filter. (Both of which were on the 200) I think the pipe is an old Powroll design.
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-31-2016, 09:09 AM | #39 | |
Join Date: Oct 2016
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Quote:
Those are more like what I would expect. I tore the carb top off last night and richened the needle position by moving the clip down 2 notches. I'll try it again tonight and see if it runs cooler. It also has fresh Mobil1 V-twin in the case now.
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-31-2016, 02:02 PM | #40 | |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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Quote:
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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10-31-2016, 03:44 PM | #41 | |
Join Date: Oct 2016
Posts: 547
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Quote:
I'm just at 4950' or so, but our summer riding was from 7000' to 9500' ft which is why my needle was dropped. I actually bought a 108 and 106 jet in case I needed to swap them out over 9000'. It got a little blubbery and harder to start, but ran good enough to climb the passes so I never used them.
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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10-31-2016, 11:45 PM | #42 |
Join Date: Mar 2009
Location: Sardis, BC, Canada
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You might be really close at 110 at your elevation. Fine tuning, experimentation and plug reading will help you dial it in, but you already knew that.
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Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer |
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11-01-2016, 08:41 AM | #43 |
Join Date: Oct 2016
Posts: 547
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Last night's ride was much better, but the ambient was also 20 degrees cooler. Temps stayed 360-375 for the most part. I did one "speed run" 5th gear high rpm that triggered my temp alarm at 392. The difference was this time the temperature dropped quickly as I slowed down.
My sprockets are 12/50 which is way too low for this motor. A 13t is on the way and I think it will help. Also going to try a 112 main, especially for cooler weather like this. It was 56F riding around last night; fun getting waved at by all the little trick-or-treaters!
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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11-01-2016, 11:50 AM | #44 | |
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Quote:
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***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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11-01-2016, 02:23 PM | #45 |
Join Date: Oct 2016
Posts: 547
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Just my usual ATTGAT.
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1993 CR125 powered by Zongshen 223cc OHC 2̶0̶1̶6̶ ̶L̶X̶R̶ ̶2̶5̶0̶ ̶E̶F̶I̶ ̶ Sold 2018 GPX Moto FSE250R 1993 Fantic Key-Roo 250 |
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