D24 tdi

[v8volvo]

Have an extra block and head. The block has one cylinder that was pitted deep enough by water sitting in it that it will either need to be sleeved, or bored bigger than the biggest available oversize for a D24/1.6. Wondering what it would take to turn a D24T into a direct-injected engine. I can get TDI pistons to fit no problem. Hard part would be eliminating the prechamber from the head, and finding some way to mount TDI injectors in an IDI head and have the nozzle seat and seal properly and stick out in the right spot.

There will not be any room for glow plugs, but DI engines hardly need them anyway, and with DI just using a grid heater in the intake like a Cummins would work fine anyway.

Would need a different pump to run the higher-pressure TDI injectors, but bet some kind of hybrid could be made using an early Cummins pump. Don't know if the cam would need to change too or not. I think most of the rest of it could stay just the same. Setting injection timing would be a matter of trial and error, but could probably get it to a good place with some experimentation, or find out where the VW M-TDI guys are setting theirs.

Ultimate goal would be to make around a 2.7L, straight six, mechanically-injected, solid-lifter TDI with a VNT turbo... a "D24TDI". Seems like DI always has the potential for greater power and better efficiency, though I would miss the high-rev powerband and quiet running/refinement of the IDI D24T.

We have a bunch of old 1.6 motors at the shop, including a block and head. Thinking about trying to see what it would take in terms of work on the head, and see if this might be possible.... will put up pictures if something starts to happen.