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Rich, the package used to marinize the engine is the same Bowman heat exchanger assembly used on the Perkins 4-236. While I won’t speculate that there will be parts available down the road I do know that the Perkins 4-108, 4-154 and 4-236 are still out there in large numbers (as they are exceptional engines) and Bowman parts continue to be easily obtainable.
The 4B3 is a Komatsu industrial block that is found in many commercial applications, mostly forklifts and I would expect components from Cummins will be available for a reasonable amount of time.
Chuck
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I put in a TAD Cummins 3.3 couple of years ago. One of the selling points was that all of the marinizing components were of the shelf and available everywhere. The one thing is was annoyed with was the oil pressure ran at 80 psi. The gauge only went to 60. When i looked at the panel on TAD’s web site it showed an 80psi gauge. When I questioned Marcus he said no one had complained about high oil pressure before I changed the gauge and sending unit just for my peace of mind. Paul Lefebvre came to look at mine as an example I think he was going to do the process himself. The only component that I could tell had been fabricated was the adapter between the manifold and heat exchanger. The motor performs well just a little more vibration at idle but that could be attributed to the much more solid mount that replaced the fiberglass pan with the bottom cut that Pearson used. I would recommend the motor based on the cost when I purchased. It also requires only 1600 to 1800 RPMs to achieve cruising speed. I felt this would reduce ware and fuel consumption compared to the smaller turbo engines that are rated at the same horse power.
Has anyone heard from Paul? I wonder if his boat is completedOn a good day I can see the other side of the river!
On Apr 7, 2013, at 7:22 PM, “Chuck Ruble” wrote:
Rich, the package used to marinize the engine is the same Bowman heat exchanger assembly used on the Perkins 4-236. While I won’t speculate that there will be parts available down the road I do know that the Perkins 4-108, 4-154 and 4-236 are still out there in large numbers (as they are exceptional engines) and Bowman parts continue to be easily obtainable.
The 4B3 is a Komatsu industrial block that is found in many commercial applications, mostly forklifts and I would expect components from Cummins will be available for a reasonable amount of time.
Chuck
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