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EGT Gauge, Pyrometer Probe location??
Posted: Fri Jul 11, 2008 4:58 pm
by NuclearBacon
So now that i'm finally putting on some mods i bought a while back, i want to get my Exhaust Gas Temp Gauge mounted in my A pillar, and get the probe mounted.
I've read about both places to put it, Up-pipe, and the Downpipe... and ive heard that if you place it in the up-pipe, you'll get a great reading, but if something lets go, there goes your turbo... then people say that in the downpipe, you dont get a true reading...
i'll have to take either piece down to "my" muffler shop (Minute Muffler in Dublin, Ca) and they'll weld in a bung for the probe... but where oh where shall i mount it????
Posted: Fri Jul 11, 2008 11:31 pm
by NuclearBacon
no one wants to vote eh?
Posted: Fri Jul 11, 2008 11:37 pm
by asc_up
I've always heard to mount it in the headers right before the up-pipe.
Posted: Fri Jul 11, 2008 11:45 pm
by NuclearBacon
ooo interesting.... in the headers eh?? 'll add that to the vote
Posted: Sat Jul 12, 2008 5:14 am
by Legacy777
You need to mount it in the headers. Anywhere else really isn't going to do you any good.
There's a spot on the passenger header where you can drill & tap. You can kind of see the spot in this pic
http://www.main.experiencetherave.com/s ... P_5245.JPG
Posted: Sat Jul 12, 2008 2:46 pm
by dscoobydoo
Second that- it is where mine is. The EGT is supposed to measure the gas right out of the exhaust port. The further down you put it, the less accurate your reading is.
Posted: Sun Jul 13, 2008 4:32 am
by NuclearBacon
Excellent. Thank you for clearing this up!
Posted: Sun Jul 13, 2008 4:37 am
by scuzzy
and #3 (right at that spot I believe) runs hottest AFAIK.
Posted: Fri Jul 25, 2008 3:49 pm
by NuclearBacon
could i put a wideband o2 sensor close by in the same piece of pipe? or would it need to be further down the line...
Posted: Fri Jul 25, 2008 4:51 pm
by dscoobydoo
I think 02 needs to be a bit further down where all of the gasses have merged.
Most people put it in the top of the downpipe.
Posted: Fri Jul 25, 2008 7:00 pm
by NuclearBacon
ok, so close by the original o2 sensor.... figures
Posted: Sat Jul 26, 2008 6:49 pm
by PhilSine
I selected downpipe by mistake
My question is why not the up pipe where the OE WRX EGT probe location is?
Posted: Mon Jul 28, 2008 2:16 pm
by legacy92ej22t
scuzzy wrote:and #3 (right at that spot I believe) runs hottest AFAIK.
Personally, I'd put in on the #4 manifold. Most EJ22T failures I've seen lately have been #4, not #3 even though that is the fabled hot spot because of the turbo. #4 doesn't get as much coolant flow for some reason which is why they tend to go "pop".
Posted: Wed Aug 06, 2008 9:17 pm
by 93Leg-c
legacy92ej22t wrote:Personally, I'd put in on the #4 manifold. Most EJ22T failures I've seen lately have been #4, not #3 even though that is the fabled hot spot because of the turbo. #4 doesn't get as much coolant flow for some reason which is why they tend to go "pop".
I agree. I've lost two turbo engines because the #4 exhaust valves burned.
Probably the easiest way to check your engine is pull the spark plugs. The porcelain around the center electrodes on my #4 plugs were super white -- indicative of super hot temps.
Re: EGT Gauge, Pyrometer Probe location??
Posted: Tue Jan 27, 2015 1:32 am
by GTEASER
Bump from the long long ago....
Josh, I am not seeing where in the header you recommend the EGT probe to go. Additionally, any more direction on the location at #4?
Re: EGT Gauge, Pyrometer Probe location??
Posted: Tue Jan 27, 2015 6:45 pm
by Legacy777
