70 series with D4-D mechanical pump engine (1 Viewer)

[burrogrande]

Hi, has anyone converted a d4d from a Prado into mechanical pump? I have been a 73 series that did it in Norway and wanted to check which mechanical pump and injectors to use

 

[AirheadNut]

Pretty sure the D4D engines were all commonrail diesels, so not really possible to just convert one to mechanical. They don't have an injection pump like other diesels.

 

[Gubbtratt1]

Pretty sure the D4D engines were all commonrail diesels, so not really possible to just convert one to mechanical. They don't have an injection pump like other diesels.

If I remember correctly D4D is not an engine but rather a common rail injection system, available on a number of engines. Should be easy enough to look up though.

Hi, has anyone converted a d4d from a Prado into mechanical pump? I have been a 73 series that did it in Norway and wanted to check which mechanical pump and injectors to use

It would still technically be possible with a lot of custom work, but you'll be much better off with an older engine with a 'normal' pump.

 

[Eurasiaoverland]

I think there have been direct injection conversions of the 1KZ, which could be looked at as mechanicalisation of a 1KD. Have a look at this: 1KD head onto 1KZ - https://forum.ih8mud.com/threads/1kd-head-onto-1kz.948068/

 

[burrogrande]

Thank you. True, it is not the d4d, but the kd engine. Indeed it won't be common-rail anymore

 

[Eurasiaoverland]

Thank you. True, it is not the d4d, but the kd engine. Indeed it won't be common-rail anymore

The KD Series are 'D4D' common rail engines.

Doing this conversion is not a swap. It's a serious engineering project which will require bespoke part fabrication and in depth knowledge of diesel injection systems (and access to testing/calibration facilities). To be frank, the lack of even basic familiarity you show with these diesel engines makes it hard to imagine this is a viable project.

Perhaps you misunderstood what was done to this 73 in Norway, and it was just a manual pump swap on a 1KZ engine (the 73 never had the 1KD fitted). That is a simple task, but it doesn't make the 1KZ any better or more reliable.