Topic: Will checking exhaust header temperature help to tune???

[liaudio]

I have an infrared thermometer and decided to check the temperature of each cylinder via the exhaust header.  I did this before I synched the carbs and before I got a Dyna.  I saw about a 25-40 degree difference between 1 and 4 versus 2 and 3. 

Would this be a practical way to tune the bikes stochiometric ratio?

[crazypj]

2&3 will always be slightly hotter than 1&4. You can get rough estimates of problems with infra red thermometer though. We use them to check for running conditions on multi cyl quite a lot.
PJ

[eurban]

Keep in mind that if your headers are chrome that the ir thermometer won't give anything close to an accurate reading.

[kghost]

Yes and no.....

Unless you know the precise temp produced by the desired air/fuel ratio on your engine.

Otherwise all you get is a comparison of the cylinders and an idea if your getting richer (colder) or leaner (hotter) unless you get way lean (then it gets colder again)