EGT probe install

**shwine617** · 5-13-08, 9:20

I am going to tap my manifold today before I put it back on, just wondering where would be the optimal spot for the egt probe. I marked where I was thinking about putting it with a red dot.

**lundgren420** · 5-13-08, 9:44

Perfect timing i am also ready to install a pyromiter. I am considering centered in front of the turbo flange.

**shwine617** · 5-13-08, 23:01

I did a search and I am getting mixed results. Some people are saying put it where the runners meet up or some people said put it on the hottest cylinder which I think is #1. It's one of the last things I have to do tommorow before I put the motor in, but I want to make sure I get it in the right spot. also wondering if i should put it in vertical from the top or horizontal from the side.

thanks for any input!

**fredio54** · 5-14-08, 1:48

Number one shouldn't be hotter with the correct gasket arrangement. However, it will probably be 6 or one or half a dozen of the other. Provided it is before the turbo. I would think you will get a hotter reading right next to the cylinder than down the pipe a bit, but that could be subtle. With correct compression/octane/boost/timing/afr you shouldn't even need it.

**M2cupcar** · 5-14-08, 8:14

If you're only running 1 egt, then I'd vote collector. It'll be hard to know if another cylinder gets hotter with it only in one runner. If you have it at the collector you'll have a cumulative temp - if it rises you'll know something is up. I placed mine just prior to the turbine flange primarily because that's a default aircraft location.

**lundgren420** · 5-14-08, 8:43

what is the difference in uses between the open element and enclosed element EGT sensor?

**STW** · 5-14-08, 10:43

Open K-type element will respond quicker but will also wear out quicker. Enclosed obviously works the other way.

Enclosed also contain "fine ceramic powder", I'll call it sand. Should you burn off the casing, the already much suffered turbo will get media blasting too

**PGTF2T** · 5-14-08, 11:22

i dunno what to tell you, i have one in my stock manifold and its in the 1st or 2nd runner with in 2-3 inches of engine, and in fe3 its right where you are suggesting.

**shwine617** · 5-15-08, 0:16

I tapped the manifold today. I had to go to home depot and get a 1/4 npt tap. They recommended using a 21/64 drill bit which is near impossible to find in any store so I used a 5/16 and then opened it up a tad with my dremel. The tap worked great, I tapped it a little bit at a time since the pipe thread is tapered. I got it to sit at the perfect depth and it gets nice and snug...
I learned my lesson the first time I used a pipe thread tap. I ran the tap in too far and the trans plug I installed never got tight and just screw in all the way through the trans case...

anyway here's a pic...

**PGTF2T** · 5-15-08, 22:02

looks good

5-13-08, 9:20	#1 (permalink)
shwine617 Join Date: Aug 2004 Location: Spotswood, NJ, USA Age: 23 iTrader: (0)	EGT probe install I am going to tap my manifold today before I put it back on, just wondering where would be the optimal spot for the egt probe. I marked where I was thinking about putting it with a red dot.
	90 MX6 GT http://www.cardomain.com/ride/2036393 Stock: 15.446 @ 88.78 F2T Best: 12.71 @ 104 FE3T: 11.941 @ 99.03 (missed 4th) Best MPH: 12.24 @ 117.03 videos:http://videos.streetfire.net/uploaded/Shwine617.htm

5-13-08, 9:44	#2 (permalink)
lundgren420 Join Date: Oct 2005 Location: OZARK, MO, USA Age: 24 iTrader: (2)	Perfect timing i am also ready to install a pyromiter. I am considering centered in front of the turbo flange.
	1988 MX6 N/A M/T -getting a new heart. Check it out http://www.mx6.com/forums/showthread...ferrerid=35300 1989 Probe GT M/T -my new toy 1980 Monte Carlo W/305 H.O.-my first ride and iv'e still got her

5-13-08, 23:01	#3 (permalink)
shwine617 Join Date: Aug 2004 Location: Spotswood, NJ, USA Age: 23 iTrader: (0)	I did a search and I am getting mixed results. Some people are saying put it where the runners meet up or some people said put it on the hottest cylinder which I think is #1. It's one of the last things I have to do tommorow before I put the motor in, but I want to make sure I get it in the right spot. also wondering if i should put it in vertical from the top or horizontal from the side. thanks for any input!
	90 MX6 GT http://www.cardomain.com/ride/2036393 Stock: 15.446 @ 88.78 F2T Best: 12.71 @ 104 FE3T: 11.941 @ 99.03 (missed 4th) Best MPH: 12.24 @ 117.03 videos:http://videos.streetfire.net/uploaded/Shwine617.htm

5-14-08, 1:48	#4 (permalink)
fredio54 Join Date: Aug 2004 Location: Auckland, New Zealand iTrader: (1)	Number one shouldn't be hotter with the correct gasket arrangement. However, it will probably be 6 or one or half a dozen of the other. Provided it is before the turbo. I would think you will get a hotter reading right next to the cylinder than down the pipe a bit, but that could be subtle. With correct compression/octane/boost/timing/afr you shouldn't even need it.
	DIYEFI.org - TRUE DIY engine management Mazda FE3/FE-DOHC Master Index Thread (work in progress) Mazda truck with FE-DOHC/FE3 "BIG like your house" Holset Turbo drinking 2.2 litres of fuel per minute ~= 385hp crank RIP SleepCounter :-( we will miss you! - RIP fredio54 :-( will we miss you?

5-14-08, 8:14	#5 (permalink)
M2cupcar Join Date: Jun 2003 Location: Atlanta, GA, USA iTrader: (1)	If you're only running 1 egt, then I'd vote collector. It'll be hard to know if another cylinder gets hotter with it only in one runner. If you have it at the collector you'll have a cumulative temp - if it rises you'll know something is up. I placed mine just prior to the turbine flange primarily because that's a default aircraft location.
	\| 1990 Mx-5 \| Silver Red LE interior \| FE DOHC \| T3/T04e 57trim/.50AR Stage3/.48AR \| FM 1.6 LINK ECU with PLink & Palm M500

5-14-08, 8:43	#6 (permalink)
lundgren420 Join Date: Oct 2005 Location: OZARK, MO, USA Age: 24 iTrader: (2)	what is the difference in uses between the open element and enclosed element EGT sensor?
	1988 MX6 N/A M/T -getting a new heart. Check it out http://www.mx6.com/forums/showthread...ferrerid=35300 1989 Probe GT M/T -my new toy 1980 Monte Carlo W/305 H.O.-my first ride and iv'e still got her

5-14-08, 10:43	#7 (permalink)
STW Join Date: Jan 2006 Location: Turku, Finland Age: 31 iTrader: (0)	Open K-type element will respond quicker but will also wear out quicker. Enclosed obviously works the other way. Enclosed also contain "fine ceramic powder", I'll call it sand. Should you burn off the casing, the already much suffered turbo will get media blasting too
	626 '88 Wagon, turbo 2.0 DOHC My vBGarage My ride at CarDomain

5-15-08, 0:16	#9 (permalink)
shwine617 Join Date: Aug 2004 Location: Spotswood, NJ, USA Age: 23 iTrader: (0)	I tapped the manifold today. I had to go to home depot and get a 1/4 npt tap. They recommended using a 21/64 drill bit which is near impossible to find in any store so I used a 5/16 and then opened it up a tad with my dremel. The tap worked great, I tapped it a little bit at a time since the pipe thread is tapered. I got it to sit at the perfect depth and it gets nice and snug... I learned my lesson the first time I used a pipe thread tap. I ran the tap in too far and the trans plug I installed never got tight and just screw in all the way through the trans case... anyway here's a pic...
	90 MX6 GT http://www.cardomain.com/ride/2036393 Stock: 15.446 @ 88.78 F2T Best: 12.71 @ 104 FE3T: 11.941 @ 99.03 (missed 4th) Best MPH: 12.24 @ 117.03 videos:http://videos.streetfire.net/uploaded/Shwine617.htm