@Kiwif150
I think my money would be better spent on getting the higher revs than on upgrading my drivetrain. Yes, an ECU and programmable fuel delivery will probably be a requirement. So will a 16:1 mechanical compression with ~1.5 bar of boost. There are builds out there that manage this but where is the rev limitation with diesel? Is it the fuel burn rate, the mechanical compression requirement or just an exhaust bottleneck?
Why would you want to go for high revs rather than taking advantage of the high compression high torque nature of a diesel?
I noticed that you said you made your own fuel ..... if you are running veg or wmo through a hdi engine it'll have to be scrupulously clean, consistent and with the correct viscosity. If you are talking late model common rail (hdi) then pressures can get up to and beyond 36000psi at the injector ...... inconsistency in your fuels viscosity is going to upset the pulse timing.
Any late model diesel that i mentioned will bust your existing drivetrain limit of 450 ft/lb ..... your best bang for the buck in my opinion would be to stick to the diesels best feature of high torque and use gearing to keep the car surfing the torque curve.
Maybe you would be better off building up a good 5.0 with high compression such as 13.5/1 and making ethanol to run in it ..... you'll get great torque levels , the rev range you want , still have something a little different and have the satisfaction of making your own fuel.
Take a late model common rail diesel such as a Range Rover sport 3.0tdi for a drive and you'll see what i mean by "surfing the torque wave" as opposed to wringing the performance out of something by revving the snot out of it ....... late model multi speed auto behind one of those 3.0 tdi's in a light fox body will blow the doors off a lot more than you'd think.
