This thread is perhaps of less interest to Patrol specialists as the issues that I face are not necessarily common to Nissans.
Added to this should be the Fuel pump and Fuel filter issues I had in Decemberviewtopic.php?f=50&t=6727
And, my car's apparent inability to cross water.
So this issue came up on the river trip and again at Rust de Winter.
Below is a description and pictures of what I had done.
I was referred by Errol to a friend that does Lexus conversions (his owns a Landrammel and Navara with Lexuses in).
(while I was there another Navarra with a dead 2.5 came in for an op)
We started by using a water spray gun while the car is idling, and target specific areas of the engine.
The timing sensor on a pulley (which I always thought was the issue), got soaking wet and the engine was still happy.
However after spraying the coils and allowed water to drip over the area where the injectors are (on top of the engine), it started to stutter.
Now the simple riddle: How does the water get there, if my engine starts to stutter when it is only 50cm deep?
Well, this is presumably due to the fan that does the spraying!
May engines (I suspect the TB range of Nissan included) is resistant to this.
But the Toyotas need protection from water.
So the suggested solution is an engine cover (which we then ordered)
See the pictures before and after below.
The air intake had to be adjusted slightly (notice the two stainless steel parts) in order to make space for the cover.
Now to put this to the test:
What I need now, is someone to suggest a venue on a Saturday morning, where I can drench my truck again to see if the remedy is working.
Rain is predicted for Friday (so maybe this Saturday morning can work? - it will have to be a quick outing though as I have other commitments later in the day)
Importantly for me, there is nothing else odd about my conversion that would suggest why I cannot cross water.
Nothing is different in this engine and setup from what he has seen on other 4x4s using Lexus engines. So if this solution does not work, I would be stumped!
While I was there I also had the rubber parts of my fuel lines replaced (forward and return pipes) to proper graded petrol pipes and the right thickness, as well as my long life spark plugs (they have done about 70,000, but although they are supposed to last 100,000, given the hard work this engine does in a big 4x4, it was a good time to replace them. Also I wanted new ones in for the dune trip in March!).
New air filter (mentioned elsewhere, new oil and oil filter) - I did that myself.
And that is all the TLC my V8 has got recently.
Just for the record: In total I have done 88,000 km since the conversion in 2011.