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General Minitrail Talk
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88cc Engine Rebuild Question
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<blockquote data-quote="PurplePackFan" data-source="post: 185559" data-attributes="member: 9909"><p>Having a bit of trouble getting my '71 CT70 HK0 engine running right after rebuild and adding 88cc big bore kit.</p><p></p><p>As background this is my third build and second using an 88cc kit. My first was a '72 K1 which I kept stock displacement and it runs great with new CHP carb. The second is a '71 Candy Blue K0 with big bore kit and new carb. It runs well but I just finished it in Decemeber and haven't had chance to ride it due to it being winter here in Wisconsin. </p><p></p><p>This third engine was rebuilt using the 88cc big bore kit, new CHP stock carb, clutch plates, shift forks and pins, valves, high volume oil pump and new gaskets and seals. Cam gear installed with "O" at 9:00 on head and at "T" on flywheel; points set at 0.016" with flywheel at "F" position; valve lash at 0.002" at TDC.</p><p></p><p>Engine runs on stand but will bog and run rough when trying to give it some throttle. It won't accelerate.</p><p>I'm thinking carb. I have the main jet needle at lowest groove setting(rich) and have bigger jets available to install.</p><p></p><p>Any recommendations?</p><p></p><p>Thanks</p><p></p><p>John</p><p>[ATTACH]65199[/ATTACH] [ATTACH]65200[/ATTACH] [ATTACH]65201[/ATTACH] [ATTACH]65202[/ATTACH] [ATTACH]65203[/ATTACH]</p></blockquote><p></p>
[QUOTE="PurplePackFan, post: 185559, member: 9909"] Having a bit of trouble getting my '71 CT70 HK0 engine running right after rebuild and adding 88cc big bore kit. As background this is my third build and second using an 88cc kit. My first was a '72 K1 which I kept stock displacement and it runs great with new CHP carb. The second is a '71 Candy Blue K0 with big bore kit and new carb. It runs well but I just finished it in Decemeber and haven't had chance to ride it due to it being winter here in Wisconsin. This third engine was rebuilt using the 88cc big bore kit, new CHP stock carb, clutch plates, shift forks and pins, valves, high volume oil pump and new gaskets and seals. Cam gear installed with "O" at 9:00 on head and at "T" on flywheel; points set at 0.016" with flywheel at "F" position; valve lash at 0.002" at TDC. Engine runs on stand but will bog and run rough when trying to give it some throttle. It won't accelerate. I'm thinking carb. I have the main jet needle at lowest groove setting(rich) and have bigger jets available to install. Any recommendations? Thanks John [ATTACH]65199[/ATTACH] [ATTACH]65200[/ATTACH] [ATTACH]65201[/ATTACH] [ATTACH]65202[/ATTACH] [ATTACH]65203[/ATTACH] [/QUOTE]
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88cc Engine Rebuild Question
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