View Full Version : 251 diesel conversion

07-06-2007, 06:34 PM
"I've recently bought a 86' 251 Chris Craft Katrina victim, on Ebay, for 1400.00. The boat itself is cherry, the GM power plant is locked, and the clutch condition unknown. I have a 4BT Cummins, out of a frito van, and am wondering if anyone has ever done a conversion of this type? I am going to look into converting the dry exhaust to wet, or doing a riser/check to keep water from entering. I have a 72c borg warner, with a GM bell housing to replace the clutch. The reason for converting, is 'almost' free fuel. Any ideas are welcome. Thanks in advance, Chris"

07-08-2007, 07:06 AM

Interesting. The drivetrain will be off a mile due to different torque/ rpm range. You MUST use water cooled exhaust.

Visit the diesels board (below) and ask about there.


07-27-2007, 01:03 PM
looking for a wet exhaust manifold for a cummins 4bt

08-16-2007, 11:17 AM
I'm looking for a complete diesel/trans package.

10-14-2007, 01:21 PM
"Well Guys, I'm starting over, and am going to go with a 5.7 gas engine. I'm looking for supplier for same in dixie, and any tips will be appreciated."

08-30-2009, 06:50 PM
"i want to convert from 5.7chevy gas to deisels, can anyone tell me if this is possible with the boat keeping it's borg/warner1:1 transmission, if possible which brand of deisels is recomended.thanks"