 Best place to mount EGT probe on headers?, Updated- Now weber tuning topic |
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| tornik550 |
 Jun 3 2013, 07:12 PM
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#1
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Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
Where is the best place to mount a EGT probe on 4-1 headers? I have triad headers with a triad muffler.
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| nathansnathan |
Jun 4 2013, 09:41 PM
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#2
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Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
The probes are actually pretty spendy. They list for about $90 a piece, the innovate (cheap) ones - I found them cheaper on ebay. You need a 4 channel thermocoupler amplifier also, like Innovate's tc-4 which is like $100-$150 depending where you get it. You can use the tc-4 without the probes, just k thermocouplers to save money. I can see using 1 channel on efi because there is no per-cylinder adjustment, but carbs have ay more adjustment.
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| r_towle |
Jun 4 2013, 09:50 PM
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#3
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Custom Member Group: Members Posts: 24,585 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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QUOTE(nathansnathan @ Jun 4 2013, 11:41 PM)  The probes are actually pretty spendy. They list for about $90 a piece, the innovate (cheap) ones - I found them cheaper on ebay. You need a 4 channel thermocoupler amplifier also, like Innovate's tc-4 which is like $100-$150 depending where you get it. You can use the tc-4 without the probes, just k thermocouplers to save money. I can see using 1 channel on efi because there is no per-cylinder adjustment, but carbs have ay more adjustment. Not sure what generation you are, but I have tuned carbs for years by reading plugs. So, one sensor and gauge is a whole lot more than I ever had...and one does work. Not everyone can afford everything and the OP is looking for a cheap solution. One sensor will work if that is what he can afford... A single sensor and a single gauge. Oh, btw...I do know how they work. Carbs a far easier to tune than EFI' so don't over think it. Based upon your elevation, your camshaft, and your head combo, I know at least five people that can give you a very decent base setup for carbs that will be damn close to right on the money. You may be over thinking this and you might want to spend your small budget on other more important things than a gauge you may never really need. Rich |
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| nathansnathan |
Jun 4 2013, 11:19 PM
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#4
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Senior Member Group: Members Posts: 1,052 Joined: 31-May 10 From: Laguna Beach, CA Member No.: 11,782 Region Association: None |
QUOTE Not sure what generation you are, but I have tuned carbs for years by reading plugs. Reading plugs isn't what it used to be with today's fuels. Also, a big factor for me in moving from the relatively inaccurate Colortune to egt probes was stripping out a spark plug thread. -I cringe to hear people taking out plugs hot, which is the only accurate way to read plugs. QUOTE So, one sensor and gauge is a whole lot more than I ever had...and one does work. Not everyone can afford everything and the OP is looking for a cheap solution. It all depends on how well you want it to run We've talked about several options and price points here from an infrared gun to thermocouplers to probes. QUOTE One sensor will work if that is what he can afford... A single sensor and a single gauge. Again, best save your money on that. QUOTE Oh, btw...I do know how they work. I don't really, but the tc amplifier is like a preamp in an audio system it would seem. QUOTE Carbs a far easier to tune than EFI' so don't over think it. Again, it all depends on how well you want it to run. It's easy, sort of, to make it run, but to make it run well... I don't see that much. Most people's carbs run like pigs. Richness hurts performance. Carbs are forgiving, one should say, not easy. There is a lot of performance and drivability to be had just through tuning. QUOTE Based upon your elevation, your camshaft, and your head combo, I know at least five people that can give you a very decent base setup for carbs that will be damn close to right on the money. The issue isn't jetting here, it's setting up the mixture, air correction, and the linkage. There are plenty of variables to be considered. QUOTE You may be over thinking this and you might want to spend your small budget on other more important things than a gauge you may never really need. Agreed... about the budget. (IMG:style_emoticons/default/biggrin.gif) The innovate option is crap and the next level up is fairly ridiculous in price. I do recommend, if you have carbs, get an infrared gun and aim it at your exhaust stubs. |
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| ChrisFoley |
Jun 5 2013, 06:29 AM
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#5
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I am Tangerine Racing Group: Members Posts: 7,934 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None
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QUOTE(nathansnathan @ Jun 5 2013, 12:19 AM) I do recommend, if you have carbs, get an infrared gun and aim it at your exhaust stubs. (IMG:style_emoticons/default/agree.gif) |
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Posts in this topic
tornik550 Best place to mount EGT probe on headers? Jun 3 2013, 07:12 PM
Vacca Rabite Somewhere after the 4-1 collector, following the i... Jun 3 2013, 07:29 PM
Racer Chris
Somewhere after the 4-1 collector, following the ... Jun 3 2013, 07:34 PM nathansnathan I put them here on some dansk bus heat exchangers.... Jun 3 2013, 07:59 PM tornik550 I plan in only installing one egt probe. My car ... Jun 4 2013, 07:55 AM r_towle not sure what value a single EGT probe would have.... Jun 4 2013, 08:41 AM tornik550
not sure what value a single EGT probe would have... Jun 4 2013, 12:23 PM Racer Chris
...
I was planning on installing a probe right af... Jun 4 2013, 12:44 PM nathansnathan
[quote name='r_towle' post='1874519' date='Jun 4 ... Jun 4 2013, 01:57 PM tornik550 Ok, maybe I should change the focus of my original... Jun 4 2013, 02:22 PM 76-914
Ok, maybe I should change the focus of my origina... Jun 4 2013, 03:22 PM nathansnathan After all that messing around with egt probes, I b... Jun 4 2013, 03:10 PM r_towle CHT is going to vary because the cooling fan setup... Jun 4 2013, 04:18 PM nathansnathan
Can you use one probe and keep moving it...sure ... Jun 4 2013, 05:00 PM tornik550
Can you use one probe and keep moving it...sure... Jun 4 2013, 05:13 PM nathansnathan problem is that you would need to move it back to ... Jun 4 2013, 05:51 PM r_towle If its carbs, you don't have the fine tuning a... Jun 4 2013, 08:34 PM r_towle Or...
Four probes
One gauge
A 4 channel switch fro... Jun 4 2013, 08:36 PM tornik550 I should point out that I don't mind spending ... Jun 5 2013, 09:27 AM |
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