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09-30-2008, 03:27 PM
| #1 (permalink) |
| 2nd Gear Member  Join Date: Nov 2007 Location: Birmingham, AL (Not a native.)
Posts: 386
| Opinions, please? I want to build a custom pit bike for the road courses, and I don't know which way to go. I hang out with a bunch of Z06 drivers, and a couple of them have Z50's with 125cc Chinese engines with auto clutches. I want something that will wax their asses, but still be tame enough for pit duty. Here are my choices: Bikes- '69 Z50A hardtail frame '83 Z50R frame '71 Z50A hardtail frame Engines- CT70 - complete Z50A - complete Z50 12V - bottom end I have everything to build either (or all) of them, but I really don't know which way to go with the engines. How does a TB 88cc big bore stack up against a stock Chinese 125? Should I get a race head, or is the CT70 head OK? |
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09-30-2008, 03:33 PM
| #2 (permalink) |
| 2nd Gear Member  Join Date: Nov 2005 Location: Livermore, CA
Posts: 415
| Re: Opinions, please? The hardtail will have the coolness factor, and since it's a pit only bike it won't really be that big of a deal to not have rear suspension. The 88 kit in the hardtail frame will scoot along pretty good, but I don't know if it'll keep up with a 125 china motor. |
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09-30-2008, 04:10 PM
| #3 (permalink) |
| Advertiser  Join Date: Dec 2003 Location: San Francisco, CA
Posts: 2,469
| Re: Opinions, please? Bike: '83 Z50R frame Engine: Z50 12V - bottom end add a TB 117 bore/stroke/race head kit, 4 speed and a manual clutch.
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09-30-2008, 04:29 PM
| #4 (permalink) |
| 5th Gear Member  Join Date: Sep 2003 Location: KANSAS
Posts: 7,257
| Re: Opinions, please? 12V Z50 engine, pick your favorite frame. Trailbikes 108-117cc with a manual clutch. |
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09-30-2008, 04:32 PM
| #5 (permalink) |
| 2nd Gear Member Join Date: Dec 2006 Location: Lake Charles, Louisiana
Posts: 559
| Re: Opinions, please? If you're hanging out with Z06 drivers, then I'm guessing money isn't much of an issue. You can either get fancy with a honda motor and go big bore/stroke, or go with an even bigger china motor, like a 178 or something. You gotta pay to play, so make sure every penny is used the best way possible. DAVE |
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09-30-2008, 04:46 PM
| #6 (permalink) |
| PM Newbie  Join Date: Sep 2008 Location: England
Posts: 37
| Re: Opinions, please? i have a "nice" new motor to put in a project of mine  honda 180 dohc |
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09-30-2008, 04:55 PM
| #7 (permalink) | |
| 2nd Gear Member Join Date: Nov 2005 Location: Livermore, CA
Posts: 415
| Re: Opinions, please? Quote:
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09-30-2008, 05:04 PM
| #8 (permalink) | |
| Advertiser Join Date: Dec 2003 Location: San Francisco, CA
Posts: 2,469
| Re: Opinions, please? Quote:
this one works 
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09-30-2008, 06:45 PM
| #9 (permalink) | |
| 2nd Gear Member Join Date: Nov 2007 Location: Birmingham, AL (Not a native.)
Posts: 386
| Re: Opinions, please? Quote:
Surely an 88cc kit with manual clutch can outgun a fat guy on a 125cc Chinese auto? I don't want to split cases for this one. I don't have the tools or experience to build a stroker. | |
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09-30-2008, 06:45 PM
| #10 (permalink) | |
| 2nd Gear Member Join Date: Nov 2007 Location: Birmingham, AL (Not a native.)
Posts: 386
| Re: Opinions, please? Quote:
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