Alabama Boater
Senior Member
- Joined
- Apr 18, 2016
- Messages
- 110
- Location
- USA
- Vessel Name
- Always Something!
- Vessel Make
- Tiara 3700 open
Cummins 6B5.9-M marine diesel engine
For Sale: 1 naturally aspired 115 hp in-line 6 cylinder diesel. The engine was originally built in 1991 and has the small 7mm injectors. It is heat exchanger cooled and has the low profile aluminum oil pan. It is complete and in running condition. No transmission is included but does have a transmission adapter plate, suitable for Velvet Drive or Hurth. (I do have various ratio Velvet Drive transmissions that I can rebuild and a Hurth 63A 2.0/1 available) This engine is the second of a pair that I purchased. I sold the sister engine for a Leman replacement this spring
The engine has gone through reconditioning that includes block stripped and phosphate treated, new pistons, rings, bearings, head resurfaced with valves and seats ground, valve springs tested and replaced as needed, rocker arms bushings checked, rebuilt injectors (new nozzles) and pump, new 12V starter and 105A alternator, rewired to include new temp sender and separate alarm, new oil pressure sender and separate alarm. The engine wiring harness is plug compatible with Mercury and Crusader. Heat exchanger and oil cooler cleaned and pressure tested. Exhaust boiled out and pressure checked. The parts were primed and painted prior to assembly. New hoses and clamps were used in assembly. The rear of the block, #6 cylinder, has the improved water outlet for cooling. A transmission oil cooler and bracket is include but not shown. As these engines were rebuilt for my own intended use, whatever needed was done. I bought a $4K dyno to break them in.
The engine has been run approximately 2 hours on a water brake dyno per Cummins break in procedure for the first 3 steps, to 75% power. The dyno is designed for higher RPM horse power so I was unable to get to the 100% load at 2500 RPM for the final step. (Dyno is 450 hp @ 5000)
Why am I selling? I bought the engines in unknown condition as USCG takeouts. They needed much work and conversion to 12V as outlined above. My original intent was to buy a gas powered 36’ Tiara and repower with these diesels. I have already converted a 33’ Tiara to Perkins 4.236 power. I am retired and not in any hurry while cruising. I do like the 2¼ gph fuel burn though!! I ended up buying a diesel powered 37’ Tiara and no longer need this remaining engine. For the adventurous type, I have 1 new and 1 reconditioned 210 hp injection pumps and 2 rebuilt turbos available at additional cost to make the power up conversion.
Upon pickup, I will start the engine prior to final payment so the buyer can verify the running condition. My hoist will load into a pickup or on to a car trailer. I cannot lift into a semi.
Asking $5,000. Located in north Alabama. PM me if interested or for more details.
For Sale: 1 naturally aspired 115 hp in-line 6 cylinder diesel. The engine was originally built in 1991 and has the small 7mm injectors. It is heat exchanger cooled and has the low profile aluminum oil pan. It is complete and in running condition. No transmission is included but does have a transmission adapter plate, suitable for Velvet Drive or Hurth. (I do have various ratio Velvet Drive transmissions that I can rebuild and a Hurth 63A 2.0/1 available) This engine is the second of a pair that I purchased. I sold the sister engine for a Leman replacement this spring
The engine has gone through reconditioning that includes block stripped and phosphate treated, new pistons, rings, bearings, head resurfaced with valves and seats ground, valve springs tested and replaced as needed, rocker arms bushings checked, rebuilt injectors (new nozzles) and pump, new 12V starter and 105A alternator, rewired to include new temp sender and separate alarm, new oil pressure sender and separate alarm. The engine wiring harness is plug compatible with Mercury and Crusader. Heat exchanger and oil cooler cleaned and pressure tested. Exhaust boiled out and pressure checked. The parts were primed and painted prior to assembly. New hoses and clamps were used in assembly. The rear of the block, #6 cylinder, has the improved water outlet for cooling. A transmission oil cooler and bracket is include but not shown. As these engines were rebuilt for my own intended use, whatever needed was done. I bought a $4K dyno to break them in.
The engine has been run approximately 2 hours on a water brake dyno per Cummins break in procedure for the first 3 steps, to 75% power. The dyno is designed for higher RPM horse power so I was unable to get to the 100% load at 2500 RPM for the final step. (Dyno is 450 hp @ 5000)
Why am I selling? I bought the engines in unknown condition as USCG takeouts. They needed much work and conversion to 12V as outlined above. My original intent was to buy a gas powered 36’ Tiara and repower with these diesels. I have already converted a 33’ Tiara to Perkins 4.236 power. I am retired and not in any hurry while cruising. I do like the 2¼ gph fuel burn though!! I ended up buying a diesel powered 37’ Tiara and no longer need this remaining engine. For the adventurous type, I have 1 new and 1 reconditioned 210 hp injection pumps and 2 rebuilt turbos available at additional cost to make the power up conversion.
Upon pickup, I will start the engine prior to final payment so the buyer can verify the running condition. My hoist will load into a pickup or on to a car trailer. I cannot lift into a semi.
Asking $5,000. Located in north Alabama. PM me if interested or for more details.
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