Gave the new (2500km) ZD30 engine a wide open throttle run (under controlled conditions) and I now have EGT of 620 Degrees C - seems too high - we used to tune normally aspirated diesels to 550 max - surely the post turbo temps should be the same... I backed off once it passed 600 and was still climbing....
Powermann
Whitie - boost limited to 15 psi (dawes valve) - but - didn't don't actually remember what boost it was running.
tweak'e - pyro probe installed in dump pipe about 75mm from turbo.
NOTE: engine was leaking oil from the injector to head seals due to poor injector alignment when returned from engine builder.. I have revieved EXCELLENT customer service from the and this production oversight has now been fixed, if I can find a camers, photos will follow...
tweak'e - pyro probe installed in dump pipe about 75mm from turbo.
NOTE: engine was leaking oil from the injector to head seals due to poor injector alignment when returned from engine builder.. I have revieved EXCELLENT customer service from the and this production oversight has now been fixed, if I can find a camers, photos will follow...
The vehicle was running on an old water dyno, so I was limiting speed with the load to 160 km/h. The pump was checked and given a basic seal kit during the overhaul, and I fitted new injectors. Before overhaul I couln't get the temp past 450 no matter how hard I tried. The fuel economy is much better - it was creeping into the 14's, now its back to 11.5 - 12 again... The strange thing is that there was no black smoke - but lack of boost (air flow) could be the issue - I'll run it up again to see what the boost is at WOT.
I'll monitor he oil consumption, now that I've fixed the leaks. The engine has a vacupan fitted for blowby disposal - though they are notorious for not working well at high revs...
Ran the car up again this afternoon - boost drops to 12 psi at 4000 rpm - so there's probably not enough air going through the engine (for whatever reason).
Mods to engine so far:
~ Factory snorkel, New airflow sensor, new turbo [the later one without the water cooling
], Dawes valve, pyro, boost intake air temperature gauges, Air/ water intercooler
~ New head, injectors, glowplugs, 2nd back cut the valves, blended the ports, new (balanced) pistons, resized (balanced) rods, single mass flywheel, safari clutch,
~ 3" exhaust from the turbo, gonzo muffler, resonator, long ranger tanks, 2" lift, etc. etc. etc...
Mods to engine so far:
~ Factory snorkel, New airflow sensor, new turbo [the later one without the water cooling
], Dawes valve, pyro, boost intake air temperature gauges, Air/ water intercooler~ New head, injectors, glowplugs, 2nd back cut the valves, blended the ports, new (balanced) pistons, resized (balanced) rods, single mass flywheel, safari clutch,
~ 3" exhaust from the turbo, gonzo muffler, resonator, long ranger tanks, 2" lift, etc. etc. etc...
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