I can offer a standalone 1Z harness by the end of the year. Let me know if interested.I am still questioning the mechanical pump on my truck's conversion and would go to the electronic pump if there was a standalone harness for my 1Z.
Very good point. I also like the fact that the injection timing can be controlled much more precise than with the mechanical pump.Actually it's much easier to carry electronic spares than mechanical ones as they weigh almost nothing and don't take up much room.
The exhaust being cooled is to cut down on heat and fire risk in the engine room, or under the engine cover.Turbos are water cooled on autos now,not the turbine or compressor housings themselves,but the center housing.The water in the manifold should be the same engine running temp, or just a little hotter.The exhaust gas temps will be the same.All the water jacket manifold does is absorb some radiant heat.While this may affect performance,it's not enough to be noticeable.Can someone explain to me the point of the water cooled exhaust manifold?
Doest the turbo turn heat from exhaust into pressure in the intake? Cooling the exhaust will lower its pressure and density and make the turbo far less efficient, am i wrong?
have you ever seen a jet boat?Find me a marine engine with a foot pedal accelerator and we'll call it sorted.
you are correct there is not much of a difference. my boar has a marinized GM 350. different exhaust, different cam, different head gaskets, different freeze plugs. at the time of manufacturing they didn't know if it would be salt water or fresh water. with a closed cooling then you don't need to worry about that. in almost all cases diesel marine engines run harder/more fuel (hotter) and can get away with it as the effectively have an unlimited cooling potential where a car doesn't"A marine engine with electronic controls doesn't particularly worry me, but trying to adapt an automotive engine to marine use means you are taking on responsibility for the engineering decisions."
So far i could not figure out any major differences between Automotive engines and their marine cousin, GM. Ford, Isuzu, VW you name it.
Other then the cooling/exhaust system of course.
In case of the VW engine i even compare the ECU maps of a marine engine and a Golf (EDC15) in Winols, 98% identical.....
I know a few people who did this as well the biggest thing is the same as what you said cooling and lubrication system. mainly lubricationthe entire time under high load thing is something boat engine builders have to always take into account when designing a marine engine. There is no coasting off load for a marine application which means you build up heat & stress loads not seen in any other setting.
I had a close friend back in the 70s & 80s who would try to transplant auto engines into boats. The real part of that quote is try, he learned that engines that could go 300,000 miles in a auto application would fly apart in what was short order when installed in a boat. It came down to the fact that the engine could not handle the constant strain without heavy modification to cooling and lubrication. After a few years of trial and error he figured out how to make his transplants very reliable long term.
I learned a lot of what I know today from watching what he did fail. Then he would spend months taking things apart figuring out what went wrong. Then he would take what he learned to avoid the failure the next time.....
The rest of what I know about this came from another friend who today builds racing engines. a lot of trial and error there also!...........