1HDT Injector Pump Replacement question. (1 Viewer)

[nck9]

So I'm pretty sure I have an early 1HDT (late 90 or early 91). I need an IP. Can I use the later IP (93-96)?
Or is this going to present problems? I heard recommendations of rebuilding early pumps to later specs so was thinking may be fine with later pump. Seems the injectors would need to stay 90-92??

Thanks in advance for any advice.

 

[roscoFJ73]

I would think your old injectors would need the cracking pressure adjusted( and probably rebuilt) to suit the new pump.

 

[nck9]

So would there be a problem swapping in later (93-96) injectors as well?

 

[Rock40]

Do you need a pump? I have 1HD-T version I'd like to part with.

 

[mudgudgeon]

Should be no problem. Best to match pump and injectors. Or have injectors rebuilt to later specs

 

[nck9]

Got the pump and injectors to go with it. Planning to send to Diesel Service to rebuild. Not sure if early or late version??
#22100-17140. #714

 

[roscoFJ73]

So would there be a problem swapping in later (93-96) injectors as well?

The later models had different bowls in the piston and I believe the fuel was sprayed at a different angle. I would be inclined to keep pistons and injectors together unless you know for sure its ok

 

[yotahed]

Yep, pump and injectors should go together, also different tip gaskets for early and late engines. Pretty important.

 

[roscoFJ73]

Different markets also had different cracking pressures to meet emission standards.