PietPompies

It depends on if your high EGTs are the result of internal or external combustion.

High internal EGTs are a result of heaps of power being made but the engine is loaded up so is too slow to turn that energy into force and cannot be utilised so instead it is turned into heat.

High external EGTs are a result of diesel fuel still burning as it exits the motor because diesel is a notoriously slow burning fuel or sometimes it is unburnt diesel being ignited by a hot spot in the exhaust.

Internal is hard on engine components like pistons, blocks and heads and can be quickly catastrophic.

External is hard on exhaust valves and turbos, generally it fucks things a little slower but you can still junk them in a long slog up a big hill.

Neither type is all that good and it is hard to determine from just a gauge whether a high EGT is the result of an internal or external process but safe to say that it is a sure sign of bad shit happening.

My call is get an EGT gauge and keep it below 1200, preferably below 900.

BS baffles brains....and my brain is starting to baffle  . I have never heard of internal and external EGTs, and neither of ISIS/IS until recently. Did you make this up? Please explain.

www.savvyanalysis.com/articles/understanding-cht-and-egt

My egt alarm is set at 720C, that is when I ease off the accelerator. Is your 1200 measured in Kelvin?

Hi Guys,

I have four old 109 Landies and have Nissan QD32's in all of them.

I have just built another out of scrap and have a QD32 Turbo in it. 

A mate told me it was too sluggish because it only had a N/A injector pump in it.

Do I need a turbo pump?

Any ideas?

 

Cheers

Mike

Hi Mike

Know a chap in Kenya that also has the QD32 in his Series Landies....says he has clutch problems as the QDs eat the clutches. Do you have similar problems? Both my QD32Ti motors run auto boxes, one in a 110 Defender and the other in a P38 RR. I think QD32 is one of the best diesels from its era.....much better than Land Rover's 300Tdi IMHO. 

As k-trips says about the correct pump for a turbo, but...me thinks high EGT kills the turbo...not the engine, pse explain.

Hi

Yes, you can swap the QD32 Eti pump out with the manual TD27t pump. I have done two and they work well. You should not get a drop in power if you adjust the pump for increased fuel supply.

If you are adventurous you might consider replacing some of the TD27t IP components with the appropriate ones out of the Eti pump to achieve a more efficient mechanical pump. This I have done and the results were very good. This is DIY stuff, but you need some courage.

The electronic part of the Eti IP performs the function of the control lever and advance. When it works properly it is a very efficient pump imho, but not streaks ahead of a fully mechanical pump.

Ciao