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Author
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Topic: Low Buck EGT system
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Dave_C
Gearhead Posts: 744
From: Gadsden, Al
Registered: Aug 99
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posted 01-11-2003 09:54 PM
   
Just ordered a system. Pieced it together and saved over 50%.Thought I would let you guys on on it. Here is the setup that I ordered for an EGT.
EGT meter:
http://www.omega.com/ppt/pptsc.asp?ref=HH11_HH12&Nav=teml04
$75 for a 2 channel, $8 shipping
EGT probe, 712-2DWK
http://www.wicksaircraft.com./gotopage.php?page=174
$27, also paid $6 for an extended cable since my car is a dragster and $5 shipping. $121 total, including shipping. This is identical to the kits sold by many companies for $270+
example:
http://www.jegs.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=1593&prmenbr=361
The Percy's unit is made by Omega. Sells for $269 + handling charge. Other's by different companies are similar in design and price.
Later,
David Cole
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steve'66
Gearhead Posts: 6522
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-11-2003 10:25 PM
Dave,Thanks for the tip!  SteveW
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jsracingbbf
Gearhead Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 01-12-2003 12:50 AM
Only difference in mine and that one is I already had a Fluke meter that had thermocouple inputs. I got the Thermocouple directly from an electronic supply outfit in Jackson MS., Industrial Electronics. The thermocouple is a WATLOW brand, they make boatloads of temperature sensors, etc.. I think I paid about the same as David did. It was a K type and came with a 1/8th" NPT and ferrel fitting & bung to weld into the header. I think the Omega unit Dave is showing would be a better way to go Unless you happen to have a meter that has thermocouple inputs already. If you buy the single channel Omega you can save another ten bucks. I guess it depends on if you want another probe. Just make sure you get "K" type and Not "J" type. Response time and repeatability is better on the "K" type for exhaust temps. A thermocouple is two dissimilar metals joined together, when heat or cold is applied the joint bends due to the different expansion rates of the disimilar metals. Certain metals deflect a certain amount and it is very repeatable. This induces a small voltage on the twin leads. A VERY small voltage. The temperature can then accurately be displayed since the two metals are known. Different metals get different names, "J" or "K" type and others. The only reason I explained all this is because you should NEVER splice thermocouple wire and you should only use thermocouple type wire. There is a splice kit you can buy, and you can shorten it. My suggestion is to buy a couple of Ft. too long and hide it under the dash. Dang good post David.  I need to dig mine out and make sure it still works
Thanks!
http://www.watlow.com/products/sensors/se_therm.cfm
http://www.goies.com/index.html
http://www.omega.com/ppt/pptsc.asp?ref=HH11_HH12&Nav=teml04 ------------------
Jerry
69 Mustang Pro ET Drag
70 Mustang retired former footbrake car
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jsracingbbf
Gearhead Posts: 1677
From: Batesville,MS. , U.S.A.
Registered: Mar 2002
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posted 01-12-2003 12:59 AM
Forgot to mention, One thing you Always want to get in a EGT set up is a digital read out with min, max, average and hold functions on the meter. The one David posted has this.  It's rather hard to read a analog meter and obtain the highest reading while cruising through the 1/8th in 6 seconds.
The max reading lets you "see" your max temp after you get back to your trailer. This is definately the way to go.
Some of the expensive ones David mentioned are analog  Who else here uses EGT's as a tuning aid?
Jerry
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Hemikiller
Gearhead Posts: 384
From: Clinton, CT
Registered: Feb 2002
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posted 01-12-2003 08:49 AM
I remember seeing the Percy's ad in Nat. Dragster, and thought it looked alot like the one we have at work. I checked it out, and it was the same unit, which was a $75 unit from Omega, are the guys at Percy's on crack or what? I could see some markup, but come on, almost 300%? If you look at their ad, they didn't even remove the Omega label.I've got the new headers for the Cleveland setup for EGT probes. Now I just have to build the darn thing!
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Dave_C
Gearhead Posts: 744
From: Gadsden, Al
Registered: Aug 99
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posted 01-14-2003 02:58 PM
Need to add one other item. The egt probe and wire from wicks aircraft doesn't come with an end connector on the cable. It can be ordered from Omega at the same time as the meter. Costs $1.75 part # SMP-K-M
http://www.omega.com/ppt/pptsc.asp?ref=SMPW_SMP_HMP_HMPW Later,
David Cole
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kid vishus
Gearhead Posts: 4538
From: middle of NC
Registered: Oct 2000
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posted 01-14-2003 05:02 PM
quote:
Originally posted by jsracingbbf:
Who else here uses EGT's as a tuning aid?
I dont, but probably should. If I had an injected motor I think it would be more beneficial than on a carb equiped car.
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