a couple of members have yanmar 230/240s 4 cylinders in their inboards (osead23 and highway12). One member has a 315 6 cylinder as well. I have seen boats with cummins 6btas and volvo 40 series as well.
The yanmar 4 is a direct replacement for the gas motors as you dont need to upgrade the shaft size to handle the torque. The diesel upgrade increases cruise speed to 25/27 knots vs 21/22 in gas powered inboards.
The yanmars arent available new anymore and the used ones are hard to find and usually fetch a high price. Yanmar is due to release a new 4lv series next year which will be a great option as they are common rail diesels in both 230 k and 250 hp.
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10-10-2017, 07:50 PM
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