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In my opinion the 4 valved head is too expensive for this build. That’s why I am planning to use a 250 polished and port matched head. Maybe I will use a custom camshaft too. My only question is, will the stock crank and gearbox handle it. Newer opened a case by before. Thats why I am asking these things. Will there be any overheating issues? Is an oil cooler necessary? What else do I have to upgrade to make it work reliable.
Last but not least which size carb do you prefer on this build?
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