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Type: Posts; User: zimanimal
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08-24-2009, 06:51 AM
Thread: Jialing JH250 performance upgrade
by zimanimal- Replies
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Dyno performance
Thanks for the info. Zim Jialings are twin-carb and cast wheeled. They arrive with 4 exhausts - 2 being stubs connected through a balance pipe to the headers. I had mine modified to run both on...
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08-19-2009, 06:52 AM
Thread: Jialing JH250 performance upgrade
by zimanimal- Replies
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- 12,944
More on the 250 performance
Thanks to iamcanjim for the Rebel-derived info - I see you guys have a huge site. My problem is not too lean a mixture, but too rich. Even with the head-work the beast still runs rich at full...
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07-31-2009, 08:00 AM
Thread: More Power from Jialing 250
by zimanimal- Replies
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BigBoreJialing
Hi Carl
Cost of re-bore was US$60, but my dealer had old stock pistons and the head work was done in-house. I've been dealing with the guys at TT for over 30 years and my bike is the unofficial... -
07-29-2009, 09:50 AM
Thread: More Power from Jialing 250
by zimanimal- Replies
- 6
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- 11,575
More Power from Jialing 250
Decided that the little 250 cruiser needed a bit more to cruise with the bigger boys, so -
Stage One - take off the head and open up the very restrictive exhaust ports, clean up the inlets, and... -
06-09-2009, 12:11 PM
Thread: Jialing JH250 performance upgrade
by zimanimal- Replies
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- 12,944
Jialing JH250 performance upgrade
I'm one of 6 or seven owners of JH250E5 cruisers in Harare, Zimbabwe. I've reduced the rear sprocket to 29 teeth to give a theoretical 140kmh @8500rpm but need a bit more torque. We're at 1500m...
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