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Engine Technical Discussion This is our non outboard engine related technical discussion forum. If your boat is powered by a Inboard/Outboard, Jet drive, V-drive, or even something else, then this is the forum for you! Topics include engine repair and maintenance, modifications, drives and gearcases, electrical and electronics, etc. For technical assistance related to outboards, please use our outboard tech forum.

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Old 03-14-2019, 08:41 PM   #1
Dwilpat
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Default First year of 502 mag EFI

What was the first year the 502 mag EFI was offered in the 253 Hull? Thanks!
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Old 03-15-2019, 08:49 AM   #2
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Model Owned: 2002 Convincor 270 496-MAG-HO

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Had a 1997 Stingray which I just sold had the 502 MAG.. Don't worry was replaced w/Convincor 270 last fall
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Old 03-15-2019, 03:02 PM   #3
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Model Owned: 2000 Powerquest 380, 1987 Starfire, Past: 1997 253 Convincor,

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1993 was first year Merc made the 502 EFI. 93-96 was VST fuel system with MEFI1, 97-98 later was Cool Fuel system with MEFI1, 99-up was cool fuel with MEFI 3.

V-belt accessory drives until 1998 then went serpentine.
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Old 03-16-2019, 08:29 PM   #4
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Probably knows the serial numbers and all of the bearing clearances too, I'm just sayin...
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