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Thread: 2.5 Efi 260 Vs 280
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03-05-2018, 08:20 PM #16
Screaming And Flying!
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260 cdi - rev as far as you like
280 inductive ignition - not great for high revs but much better everywhere else
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03-05-2018, 09:03 PM #17
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No port diff?
I would think something had to change for merc to rate it @ 20 more hosses and yet spin an alternator?WillySteve Hendricks
20XDC Bullet/Modified Merc 260
295TF Charger/ProMax 225x-Sold!
'83-20' Contender Pickle Fork/Merc 2.4 ModVP BridgePort EFI-Sold!
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03-05-2018, 09:09 PM #18
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The ports are different. See post #7.
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03-05-2018, 09:10 PM #19
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Surely by now one of ya's had'em side by side???
WillySteve Hendricks
20XDC Bullet/Modified Merc 260
295TF Charger/ProMax 225x-Sold!
'83-20' Contender Pickle Fork/Merc 2.4 ModVP BridgePort EFI-Sold!
'85-18' Stratus STV/Merc Hi-Po 2.4 EFI-Sold!
Freedom 240 DLX Fisher Toon/Merc 115
10' Cougar Cub/Merc 25HP On The Bottle!
18" Home Made Tunnel/OS .021XM Outboard on 50% Nitro and Expansion Chamber
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03-05-2018, 09:24 PM #20
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I've owned both. 280 also has higher stock compression.
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03-05-2018, 09:31 PM #21
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Keep in mind, it was rated at 260 in 91' by time the A48 digital box came along dyno's were showing much improvement.
But from what I know, slightly better exhaust chest, lower exhaust port timing and 15 to 20#s more compression.
Fwiw, red boat 260's, white boat 280's.
https://www.youtube.com/watch?v=JctvjyZRHdE
is gone
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03-05-2018, 09:33 PM #22
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It’s funny to read posts from that long ago. Everybody but 1badaction was hating on the ole 280.....now it’s what everybody wants lol. Who’d of thunk Jim knows his stuff?!
'95 STV "The Blue Goose"
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03-05-2018, 10:19 PM #23
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I was just pointing out one of the many differences
Originally Posted by powerabout
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