Exhaust temps

philbilly · 03-11-2013, 11:50 PM

How many older hot rods got pyrometers in them? what kind of exhaust temp should one be? I am going to put a guage in and do some checkin. is there a ball park number you shoot for?

Altronics · 04-02-2013, 10:18 AM

Quote:

Originally Posted by philbilly

How many older hot rods got pyrometers in them? what kind of exhaust temp should one be? I am going to put a guage in and do some checkin. is there a ball park number you shoot for?

Check out the Redalert System.

Gasoline temperatures should be around ~1300F.

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Kegracing · 04-02-2013, 02:27 PM

Phil,

They still work. Key is not to get too hung on the exact number, but to keep records and see what changes do what. Both your mechanical changes and the air!

Reason is that every probe in a header is a little different than the next car's, different port flow, etc. Lots of variables. As Altronics said, max gas you want is about 1300. I ran a two channel system on one of my cars, but had bungs in all the headers. Could move them around as needed. Testing I would look for hotter or cooler cylinders.

Good luck
Ken

FED 387 · 04-02-2013, 03:16 PM

altitude-weather-fuel mixture-header size/design engine tune up can all contribute to varying exhaust temps---KEEP records that will tell you a lot --also dont let it get too hot you'll end up doing damage--- burnt pistons or valves, cracked seats, warped heads , blown head haskets etc

03-11-2013, 11:50 PM	#1
philbilly Member Join Date: Aug 2011 Location: Demossville,KY Posts: 337 Likes: 0 Liked 0 Times in 0 Posts	Exhaust temps How many older hot rods got pyrometers in them? what kind of exhaust temp should one be? I am going to put a guage in and do some checkin. is there a ball park number you shoot for?

04-02-2013, 02:27 PM	#3
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: Exhaust temps Phil, They still work. Key is not to get too hung on the exact number, but to keep records and see what changes do what. Both your mechanical changes and the air! Reason is that every probe in a header is a little different than the next car's, different port flow, etc. Lots of variables. As Altronics said, max gas you want is about 1300. I ran a two channel system on one of my cars, but had bungs in all the headers. Could move them around as needed. Testing I would look for hotter or cooler cylinders. Good luck Ken

04-02-2013, 03:16 PM	#4
FED 387 VIP Member Join Date: Jun 2006 Posts: 3,419 Likes: 528 Liked 332 Times in 180 Posts	Re: Exhaust temps altitude-weather-fuel mixture-header size/design engine tune up can all contribute to varying exhaust temps---KEEP records that will tell you a lot --also dont let it get too hot you'll end up doing damage--- burnt pistons or valves, cracked seats, warped heads , blown head haskets etc