Ok so if we wanted to lower the compression would the easiest way be to swap the pistons with the tractor version or de-stroke the engine a little.
Easiest trick in the diesel world is a thicker head gasket. But that's fractional CR reductions at best. Destroking would require custom pistons. Tractor pistons wouldn't have the proper bowl for the mutifuel heads/injectors. Probably fly cutting the piston faces or increasing the bowl diameters (risky) is the best option.
I've been through this over and over in my head. It's just not cost effective to build up a LDT or LDS in my opinion due to their inherent design. But if anyone wanted to build up one and keep the key trait of multifuel ability, I would do the following.
1. Balance the rotating assembly, this simply isn't done in the military.
2. Rod bolts, speculation at best, but once you've been in one of these engines you'll understand how much weight you're slinging around.
3. Main bolts and a girdle.
4. 2 port oil squriters if you only have singles.
5. Make sure you have a TD block to start with!
6. Custom head studs
7. Develop a fire ring solution on the head gaskets.
8. Have the cam custom ground.
9. Clean up the intake and exhaust ports on the head, nothing major though.
10. Build a custom intake manifold to remove the coolant passages or re-work the
11. Heavier valve springs.
12. Different turbo (would have to do the math on the map).
13. FASS or airdog lift pump.
14. Therm fan clutch/fan.
15. LDS pump that has been tweaked.
16. Increase pop pressures on the injectors.
17. And likely you'd need a better clutch and transmission.
But with all that I think you could have a 300hp daily driver multifuel. Problem is, that engine probably would cost what several complete deuces cost.
