Quote:
Originally Posted by tommy222220_0
EGT should really be measured before the turbo for accurate readings.
The disturbance caused by the probe (thermocouple) would be minimal (probe is about 5mm in diameter)
The reason most put it in the dump pipe is just incase the proble fails and goes through the turbo.
If you plan on doing the EGR blocking mod, the EGR hole in the exhaust manifold is a perfect place for the EGT probe.
Got the A pillar pod from ebay uk (~$AU 30 delivered), but required some minor modification to fit (~1 hr)
To block the EGR on a ZD30 nav, you need to block it off at the exhaust manifold (rear of exhaust manifold), Intake (middle drivers side entry) and swap 2 holes around for the EGR solenoid. Some instructions in here - egr/butterfly mod - The Navara Forum (somewhere) |
Some good points mate.
I think the accuracy is not such a problem, after turbo roughly 100 degrees cooler and therefore you set you limit at 550 degrees instead of 650.
As long as you take that into account there is sufficient accuracy.
It really depends on what is easier, if its easy to do before the turbo then do so, if not throw on an free flow exhaust and put it in the dump pipe.
Main thing is you don't want it too close to the turbo as it will interfere with gas flow. Sure its only 4-5mm wide but at the rate at which exhaust gases pass it dose have an impact and might as well be 50 mm wide. There is some complex fluid dynamics going on there that often gets over looked.
The 80 to 100mm advice was based on modeled fluid dynamics of a dump pipe temp probe situation.
Cheers
Justin