where do i put egt sensor?

[Pirana]

the rod blew so it must have been the hottest

The reason it was mentioned is since no one here will do what really is necessary, like a 4 channel egt monitor, then the hottest known cylinder should be monitored. (rei)

 

[Mallard]

The reason it was mentioned is since no one here will do what really is necessary, like a 4 channel egt monitor, then the hottest known cylinder should be monitored. (rei)

what I'm tellin you is saying the rod blew because that cylinder was the hottest is not necessarily true. Many things effect the cylinder temperatures, not just a/f. That's why you don't use an egt to tune a/f. IMO you would want to put the thermocouple in the cylinder runner that should be the hottest according to engineering principals. That would be 2 or 3. As I've stated a couple times already, cylinder 2 and 3 will not have the heat lost to convection and radiation that 1 and 4 will have. They will also absorb some of the heat from the bordering cylinders.

 

[Brian MP5T]

what I'm tellin you is saying the rod blew because that cylinder was the hottest is not necessarily true. Many things effect the cylinder temperatures, not just a/f. That's why you don't use an egt to tune a/f. IMO you would want to put the thermocouple in the cylinder runner that should be the hottest according to engineering principals. That would be 2 or 3. As I've stated a couple times already, cylinder 2 and 3 will not have the heat lost to convection and radiation that 1 and 4 will have. They will also absorb some of the heat from the bordering cylinders.

(hand)

You Don't use an EGT "Only to tune A/F"

It's a good indicator, however you use it with a Wideband O2.
The More the better...

Besides, knowing how hot the combustion is is good info for saving your motor from a melted piston or a cooked valve..

 

[Mallard]

(hand)

You Don't use an EGT "Only to tune A/F"

It's a good indicator, however you use it with a Wideband O2.
The More the better...

Besides, knowing how hot the combustion is is good info for saving your motor from a melted piston or a cooked valve..

That's exactly what I've been saying. I think you mis-interpreted what I said. Go read all my posts in this thread and you'll see I've been saying that the EGT's main responsibility is to save you from melting a valve, and that's why you want it as close to the head as you can put it.

 

[Bigg Tim]

It's rather far but sits around 1200 F with the DEI Wrap at 120 Km/h constant...

When do you see the 1200 degree's? I see those temps when I boost hard. I'm normally aroun 900-1000 degrees while driving normally, and that's with the probe after the turbo. I was told to add 200 or so degrees to get the temp before the turbo.

 

[joka1]

i idle at 800, normal driving is around 1000 and at boost it is around 1200-1300... just if you were curious bigg tim since we have the same set-up pretty much! is that about what you get?
rob

 

[Brian MP5T]

When do you see the 1200 degree's? I see those temps when I boost hard. I'm normally aroun 900-1000 degrees while driving normally, and that's with the probe after the turbo. I was told to add 200 or so degrees to get the temp before the turbo.

DEI Header Wrap
EGT Probe in the collector before the turbo...
Obviously It's going to read hotter than yours tim...

Even under max load it never goes above 1400 unless there is a problem.