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#1
06-12-2006, 05:19 PM
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Carbed 200 Yamaha vs OX66 200
I have the opportunity to get an OX66 200 Yamaha and I want to know if there is any difference in fuel economy and performance compared to my carbed 200 engine? I'm thinking that it would be so minimal it wouldn’t be worth it.
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Steve B 1978 23ft SeaCraft Seavette 502HP ZZ502 Mercruiser TRS Drive-Sold-UGH! 1998 28ft Carolina Classic 7.4 Volvo Penta Duo Prop 
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#2
06-13-2006, 07:43 AM
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Re: Carbed 200 Yamaha vs OX66 200
I'm getting 2.8mpg at 3400 rpm and 25 mph. I get 2.5mpg at 4000 rpm and 30mph. This is on a 23 SF with T Top and enclosure. What are you getting with the carbed motor. Fuel mileage is from Navman 3100.
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73 23 SF 2004 200 HP Yami OX66 Best boat I owned! 2002 29 Seavee twin 200 yami's
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#3
06-13-2006, 04:13 PM
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Re: Carbed 200 Yamaha vs OX66 200
stoney, I'm getting 2.2 - 2.3 MPG. This is at 30 MPH 4500-4600 RPM. For comparison purposes I feel that the Sceptre is a little heavier than the center console boats so this might make up for the differences in MPG. My top speed is around 39-40 MPH @ 5500 RPM.
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Steve B 1978 23ft SeaCraft Seavette 502HP ZZ502 Mercruiser TRS Drive-Sold-UGH! 1998 28ft Carolina Classic 7.4 Volvo Penta Duo Prop
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#4
06-14-2006, 02:34 PM
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Re: Carbed 200 Yamaha vs OX66 200
On an older boat, I switched from a 225 carbed Yammie to a 225 OX66 yammie ('95 to a '99) I got about 18% - 21% better fuel economy - had pretty accurate fuel management guage.....Then, the hpdi is a lot better than that.
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