PDA

View Full Version : EGT Probe



Mopar_Nutz
06-22-2006, 12:56 AM
OK well this is gonna be more in depth than I originally intended but seeing as this site doesn't really have anything on this I'll get into it a little.

I'm planning on putting the EGT probe in my #3 runner as it has been reported by some very intelligent individuals that it tends to run the hottest. Others suggested that #4 runs hotter on more modified cars. #4 is the usual runner that gets the probe because it's reachable with the manifold still installed and as stated it's at least one of the 2 hottest cyls.

SO, that being said. My engine is out and I'm going with #3. I've read that 1.5" or so away from the head is best. Is that set in stone? Because I found that using my probe (clamp on), I need to grind out that rib just to get the clamp around it. If I mount it on the bottom of the runner it'll be about an inch or less away from the head. But if I put it on top, I'll have 1.5" or so since I can angle the clamp a bit around the bend.

Best way to go? I'm leaning towards the top even if it's just to get the wire up and out of the way easily. But figured I'd write this up anyways just for reference. We don't have a good EGT probe discussion yet. hahaha

Also it seems to me like there's TONS of room to mount a probe in #3. Either top or bottom seems to have sufficient space. #4 looks like a pain, and with my probe (1" long westach #712-2DWK) it does't look like I'd have a hope in hell of getting it in there. Intake on top, starter on bottom, and too long to go sideways.

puppet
06-22-2006, 11:57 AM
Don't forget about the starter.

Mopar_Nutz
06-22-2006, 11:18 PM
I've got the top end sitting on the engine right now. #3 seems to me to have plenty of room around the starter? #4 looks tight though.

SwiftTech
06-23-2006, 01:23 AM
did you see this thread?
http://www.turbo-mopar.com/forums/showthread.php?t=1045
I know its about the TU header but the info still should apply.

Mopar_Nutz
06-23-2006, 03:36 AM
Yeah that thread is a big part of my reason for wanting to do #3. I guess I'll just stick it in the top of #3 though. I just wasn't too sure if I should go within an inch of the head or not. Or if 1.5" is just as good.

SwiftTech
06-23-2006, 12:01 PM
Just make sure it clears the intake manifold. also it looks by this picture you will be fine if you are closer than 1.5" to the head.
http://www.turbo-mopar.com/forums/showpost.php?p=12528&postcount=19

forcedfedmopar
06-28-2006, 12:51 AM
does anyone have pics of an egt on a stock mani? i ordered mine and want to know where exactly to drill. i just ported it also

http://i45.photobucket.com/albums/f98/forcedfedmopar/closeupport1.jpg

Mopar_Nutz
06-28-2006, 11:41 AM
Here's the room I have from the top

http://img.photobucket.com/albums/v300/The_Relic/204695048_0.jpg

And from the bottom

http://img.photobucket.com/albums/v300/The_Relic/204695176_0.jpg

Sorry for the quality. Camera phone :o

86Shelby
06-28-2006, 03:31 PM
Just do the #4 runner. Come in from the side. There is plenty of room there; nothing is in your way. Mock it up with the intake and turbo to mark where to drill so you have better access to it when it's assembled incase you have to remove it. I did that on Supercrackerbox's CSX-T when we had the head off. Easy.

Mopar_Nutz
06-28-2006, 06:30 PM
my probe is too long to come in from the side. I checked it already. I thought that since I have it all apart, I should do the best runner possible. And it seems lately it's agreed that #3 is the hottest on a non-high powered car

cordes
06-28-2006, 07:20 PM
I have my probe in the #3 runner. I don't know were the #3 being the hottest in a non-high HP car buisiness is coming from though. IIRC the origional conversation that sparked the move from #4 to #3 was had between guys who are putting out over 300HP.

That aside, if you are going to go through all this trouble, why not tap the manifold?

I have some pics of my setup on my site. I would caution that the angle in which you drill should be chosen very wisly, as my probe barely clears the block. It is the autometer probe though, which is quite a bit longer than the shorter ones which Frank amongst others run. I too will run those when it is time for a new probe.

http://www.omniglht.com/egt.html

Mopar_Nutz
06-28-2006, 10:31 PM
Someone mentioned on the other site about higher hp cars heating up #4 more. I'm not sure what point the crossover is at though. I'm not really going to too much trouble. I already have the gauge and probe and the engine is out of the car anyways. So really it's just a matter or sticking it in the right spot, since I have the luxury of seeing exactly how everything will fit together with the engine out and everything mocked up. If #3 is the one to go for I'll stick it in the top since I have the most room there. And don't have to worry about the angle putting the probe into the block. As you can see from my pics, I have a very clean shot at the top of #3 so it seems to make sense.

I know it seems like my mind is 90% made up. I just thought it would be nice to have some ideas thrown around in here since it seems like a popular discussion that doesn't always get a definitive answer.

Mopar_Nutz
07-02-2006, 11:52 AM
Done
http://img.photobucket.com/albums/v300/The_Relic/205889288_0.jpg

And done...
http://img.photobucket.com/albums/v300/The_Relic/205889160_0.jpg

cordes
07-02-2006, 09:23 PM
Looks pretty good. Nice work getting the pobe on there with the clamp. That is a duzie.

Mopar_Nutz
07-03-2006, 02:36 AM
haha it's got a pretty good notch taken out of it. started with a side grinder, had to finish with a hack saw. Still plenty of meat left though so I'm sure it'll be fine.
Thanks for the positive comment :)

Dragula
08-02-2009, 08:45 PM
Done
http://img.photobucket.com/albums/v300/The_Relic/205889288_0.jpg

And done...
http://img.photobucket.com/albums/v300/The_Relic/205889160_0.jpg

You still have these pictures?