ALH m-Tdi marinisation to match Mercruiser outdrive
Hi all,
i have spend a good year designing an ALH water-cooled exhaust manifold plus an bell-housing that will fit to my 82 Searay.
Idea is to turn her into a economic fishing vessel.
Made the decision because i know a guy operation a 26 feet fishing boat that is powered by a 1.7L Mercruiser Diesel (Isuzu engine), very economical and still considerably fast, around 25mph.
These sets are hard to come buy (not sold anymore) and new Mercrusier Cummins units based on the TDI are extremely expensive, around $20k.
So here we go, bell-housing has been cast in Aluminium, will be shipped to me this week, i already organized an engine side starter and matching flywheel, test stand with homemade dyno tester is almost ready to go, will fire the thing up in approx two weeks.
Decided to go for a custom 20mm shaft mechanical Dextel pump with 12mm head, more about that pump later after it first ran. I am shooting for around 100 to 120 Hp.
Questions currently on my mind:
Hi all,
i have spend a good year designing an ALH water-cooled exhaust manifold plus an bell-housing that will fit to my 82 Searay.
Idea is to turn her into a economic fishing vessel.
Made the decision because i know a guy operation a 26 feet fishing boat that is powered by a 1.7L Mercruiser Diesel (Isuzu engine), very economical and still considerably fast, around 25mph.
These sets are hard to come buy (not sold anymore) and new Mercrusier Cummins units based on the TDI are extremely expensive, around $20k.
So here we go, bell-housing has been cast in Aluminium, will be shipped to me this week, i already organized an engine side starter and matching flywheel, test stand with homemade dyno tester is almost ready to go, will fire the thing up in approx two weeks.
Decided to go for a custom 20mm shaft mechanical Dextel pump with 12mm head, more about that pump later after it first ran. I am shooting for around 100 to 120 Hp.
Questions currently on my mind:
- The engine will be Turbo charged, i am converting an SDI engine cause i had it laying around, i understand that block and pistons are identical to the TDI, but the head seems to be different, does anybody know what differs?
- Read somewhere that the SDI injectors work fine with a turbo charged engine, true?
- Since it is an extremely important indicator for marine engines (running at peak performance for hours) I will be measuring exhaust temperatures to find the ideal pump settings, did anybody measure that before on a m-Tdi or Tdi?
Last edited: