I have a 2001 1.7 DTI turbo diesel mated to an Alpha 1 Gen 2 outdrive with a 2.0 ratio.The engine is in need of a full rebuild and has been pulled.Ive decided that whatever swap I was going to use would require leaving the Gen 2 drive in place.I looked at other options and as it applies to my specific requirements and considerations swapping the drive makes no sense for me.
I found a 1990 Blue water ski boat with a 4.3 and a Alpha Gen 1 drive with a 1.84 ratio.
I have decided to use the 4.3 and mate it up to the Gen 2 drive and just sell the Alpha gen 1.Its in good shape and has 162 total hours on it.
The Cummins is a straight 4 and the 4.3 has a Y pipe.one user has already said that that shouldn't be a problem.
Rear motor mounts should line up according to the same users information from a previous thread and then use an alignment bar and shim-adjust(my own words) to fit.
The shifting should not be a problem.Ill be able to use my existing shifter set up with remote on the 4.3 as it has all its throttle and shifting linkage mounted to the engine itself akin to the Cummins 1.7 I am removing.A transom mounted shift plate was not an option.
Steering shouldn't be a problem as the existing hydraulic steering set up mounts directly to the Gen 2 inner transom plate via 2 bolts top and bottom.As long as something unforeseen with the engine doesn't get in the way.
The Alpha gen 1 set up used a belt driven power steering pump that ran off the 4.3.Not sure what Im going to do with the pump but there are a few options and all are easy and straight forward enough.
The 1.7 Cummins was cooled through a raw water heat exchanger which was a nice set up for salt water use.The 4.3 looks like a straight forward raw water setup which kind of sucks but it is what it is.
Ive got the complete boat and will be using the 1990 Blue water 4.3 wiring harness in its entirety and building a new gauge cluster and plate for my dory.Just using Tach as the main gauge.Water temp-Oil pressure-And Battery Amp gauge.Keeping it simple and tidy.In this application no need for trim gauge-fuel gauge-Or Speedo-or any switches As the boat already is wired with a complete accessory panel.
If anybody see a potential problem mating the older 4.3 to the newer Gen 2 outdrive let me know.
A question--
Will the upper gear set in the A Gen 1 outdrive interchange with the A Gen 2 drive.
Its a heavy work boat so Im not sure the difference between 1.84 and 2.0 is that big of a deal.
What kind of mileage can I expect out of this early 4.3 with a 2 barrel??
Boat weighs about 3600 pounds approx. factoring in the weight of the 4.3.Rough Ballpark
Bait-fuel-gear loaded about 4000 lbs
Thx for the help
I found a 1990 Blue water ski boat with a 4.3 and a Alpha Gen 1 drive with a 1.84 ratio.
I have decided to use the 4.3 and mate it up to the Gen 2 drive and just sell the Alpha gen 1.Its in good shape and has 162 total hours on it.
The Cummins is a straight 4 and the 4.3 has a Y pipe.one user has already said that that shouldn't be a problem.
Rear motor mounts should line up according to the same users information from a previous thread and then use an alignment bar and shim-adjust(my own words) to fit.
The shifting should not be a problem.Ill be able to use my existing shifter set up with remote on the 4.3 as it has all its throttle and shifting linkage mounted to the engine itself akin to the Cummins 1.7 I am removing.A transom mounted shift plate was not an option.
Steering shouldn't be a problem as the existing hydraulic steering set up mounts directly to the Gen 2 inner transom plate via 2 bolts top and bottom.As long as something unforeseen with the engine doesn't get in the way.
The Alpha gen 1 set up used a belt driven power steering pump that ran off the 4.3.Not sure what Im going to do with the pump but there are a few options and all are easy and straight forward enough.
The 1.7 Cummins was cooled through a raw water heat exchanger which was a nice set up for salt water use.The 4.3 looks like a straight forward raw water setup which kind of sucks but it is what it is.
Ive got the complete boat and will be using the 1990 Blue water 4.3 wiring harness in its entirety and building a new gauge cluster and plate for my dory.Just using Tach as the main gauge.Water temp-Oil pressure-And Battery Amp gauge.Keeping it simple and tidy.In this application no need for trim gauge-fuel gauge-Or Speedo-or any switches As the boat already is wired with a complete accessory panel.
If anybody see a potential problem mating the older 4.3 to the newer Gen 2 outdrive let me know.
A question--
Will the upper gear set in the A Gen 1 outdrive interchange with the A Gen 2 drive.
Its a heavy work boat so Im not sure the difference between 1.84 and 2.0 is that big of a deal.
What kind of mileage can I expect out of this early 4.3 with a 2 barrel??
Boat weighs about 3600 pounds approx. factoring in the weight of the 4.3.Rough Ballpark
Bait-fuel-gear loaded about 4000 lbs
Thx for the help
