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 LSaupe |
| December 29, 2018, 10:17pm |
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Flight Leader  Posts: 161
Time Online: 1 days 10 hours 40 minutes
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I am interested in a new in box older 503 with single Bing carb and single ignition for sale locally. It is 1986 vintage. Is there an easy way to determine if this is CDI or points? |
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| Max SSDR |
| December 29, 2018, 10:47pm |
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If it flies, floats or fornicates.... rent it! Flight Leader Posts: 181
Time Online: 3 days 18 hours 44 minutes
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Single ignition is a points type. Dual ignition is CDI. |
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| tomshep |
| December 30, 2018, 5:35pm |
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Ace
Posts: 446
Time Online: 28 days 19 hours 43 minutes
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And it requires an inordinately expensive conversion That said, it is a new and powerful engine so if the price is right, bite his hand off. There are a number of points assist systems that extend their life and improve their reliability. |
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| tomshep |
| December 30, 2018, 5:37pm |
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Ace
Posts: 446
Time Online: 28 days 19 hours 43 minutes
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Is it an aircraft motor, not snowmobile? If it comes with a gearbox, you should be all right. |
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| radfordc |
| December 30, 2018, 8:03pm |
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 AcePosts: 1,836
Time Online: 18 days 1 hours
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Points engines are actually more reliable than CDI. When points start to wear the engine doesn't start and run as well....but it doesn't suddenly quit, either. CDI units work great....until they don't.
An engine that old should be disassembled and checked for rust and have new seals installed. |
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| LSaupe |
| December 30, 2018, 9:25pm |
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Flight Leader Posts: 161
Time Online: 1 days 10 hours 40 minutes
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Thanks for all the feedback. Yep, it is a aircraft engine with gearbox. |
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| tomshep |
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Ace
Posts: 446
Time Online: 28 days 19 hours 43 minutes
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If it is new in box, it will be plugged and inhibited. I wouldn't do more than likely the heads to check the bores. |
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