Just joined here after seeing the blog Acy76 created. I have access to a 89 2.8 Trooper 5 speed that my parents bought new. It was my dad's favorite vehicle up until he died in 2001 and I don't want to see it go. The 2.8 still runs but it's tired. The rest of the vehicle is very sound, having spent it's life in the southern US. I have been reading up on making biodiesel and WVO systems because I live on a farm and have a 93 cummins dodge truck. This sounds like the perfect marriage to me! I recently found that many are using the HS 2.8 TGV (HS 2800 TDI) in many vehicles with adapters to transmissions such as the 700r through Advance Adapters. Since the 2.8 in the trooper has a GM heritage, does anyone have any thoughts on such a swap? I'm quite certain I could also locate a 4J series mentioned in this thread as well. I have to say, after reading all the information both here and on the blog, I'm growing more determined to keep my Dad's Trooper alive!
If I dive into this project, I'll be trying to document my experience as Acy76 has so nicely done. I'm not sure I have the skill level to do this kind of thing, but I'm a fairly competent basic mechanic (not much diesel experience), I have some basic fabrication skills and tools (mig welders, A/O torches, and some other basic stuff), and I have a soon-to-be completed workshop.
Getting started is half the battle I'm sure! Of course, I could just drop in a crate GM 3.4 and keep the Trooper alive but the idea of an oil-burning trooper is really in line with where I'd like to see it go.
Thanks, and sorry for rattling on so long with my story!

Todd Kirby
Spring Church, PA - about an hour or so north of Pittsburgh.