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ZXI 1100 running hot

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  • ZXI 1100 running hot

    I have a 2003 zxi 1100 that I just rebuilt the top end on. It's 1.5 over with forged pistons. No other mods. Front cylinder has overheated 2 times now, scarred the piston and cylinders and I can't find the culprit. Burn pattern on the front piston is much larger than the other two and the exhaust is warm and the head is hot enough that touching it for more than about 2 seconds is uncomfortable. This is its second rebuild since the original issue. It's been through its break in again and is premix 50-1. All cooling passages have been cleaned and the lines blown out with compressed air. Stock carbs as well.
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