Differences in exhaust temperature

[dan filipi]

What is an 'acceptable' difference in exhaust header temperature?

 

[Steve83]

I don't know, but it would probably be a good indicator of mixture and volume balance between the cylinders.

 

[dan filipi]

Is what I'm thinking also.

The new vom meter I picked up has a contact temp probe so I can get some better readings at the exhaust as well as at the plenum and heat plate over the non contact one I've been using.

 

[mcgovern61]

My exhaust pipes were about 10 degrees max difference at the headers.

 

[slabghost]

As long as the plugs are an equal tan I wouldn't be concerned.

 

[joedrum]

hmmm interesting concept....but I think there are to many varibles to give temp reading more clout than plug color ... I think V is probably right in his assessment

 

[Winger 82]

slabghost » Sun Jan 26, 2014 6:34 pm[/url]":6xr4vkhl]
As long as the plugs are an equal tan I wouldn't be concerned.

+1 :good: :good: :good: :good: :good:

 

[Omega Man]

So many variables to this single carb journey! It's all really piquing my interest. opcorn:

~O~

 

[slabghost]

Keep in mind the exhaust is designed to "scavenge" draw out the exhaust from the cylinders. The crankshaft turns another two revolutions before that exhaust is heated again. If you are measuring close to the heads. So each is cooling from the instant the valve closes until it reopens. Ambient air temperature and wind will affect how much cooling is possible as will the humidity at the time. Some headers are double walled which complicates it further. You best indicator of the correct burn will always be the plugs.

 

[Ansimp]

Variance in exhaust header temperature will give accurate indications of individual cylinder performance. Variance in temperature will indicate poor combustion which can be caused by any of the magic three: Compression, Fuel or Spark.
There is a product called Colortune which is a spark plug with a window that allows you to see the actual color of spark and combustion which allows you to make more accurate jet changes.

 

[joedrum]

ive heard of that tony but never used or seen one ... sounds like that is a great tool in exactly how you stated it ...

 

[AApple]

[video]https://youtu.be/NjDXwI0YMqU[/video]

 

[CRAFTMAN6001]

AApple » Mon Jan 27, 2014 8:37 am[/url]":2lhn5k3b]
[video]https://youtu.be/NjDXwI0YMqU[/video]

WOW THIS IS REALLY COOL.. Where do u get this from..?

 

[Ansimp]

I got my first one 25 years ago through an auto parts store, the replacement came through an international eBay site..

 

[CRAFTMAN6001]

okay thank you ..