25-08-2014, 11:55 AM
Absolutely love it!!! Massive tractor pulling fan - this is right up my street!
With regards to the problem with the oil film before 45BTDC - I'm surprised you're having as many problems, although cylinder pressures will be much higher, the ignition delay of Diesel surely isn't really starting to generate high cylinder pressures until a few degrees later?
You may want to look into DLC (Diamond-Like Carbon) coatings for the bearing surfaces which may allow you to get the fuel in a little bit earlier. Though as far as I'm aware, the XUD11 cranks are no better in terms of oiling holes, not to mention your rods wouldn't work with the crank since they're a wider crank journal width.
I'd be very interested to see what you've done with the valvetrain to hold it together at 500kPa and 7000+rpm!
With regards to the problem with the oil film before 45BTDC - I'm surprised you're having as many problems, although cylinder pressures will be much higher, the ignition delay of Diesel surely isn't really starting to generate high cylinder pressures until a few degrees later?
You may want to look into DLC (Diamond-Like Carbon) coatings for the bearing surfaces which may allow you to get the fuel in a little bit earlier. Though as far as I'm aware, the XUD11 cranks are no better in terms of oiling holes, not to mention your rods wouldn't work with the crank since they're a wider crank journal width.
I'd be very interested to see what you've done with the valvetrain to hold it together at 500kPa and 7000+rpm!
