EGT Probes

[SleeperMax]

Can some of you guys that are running EGTs tell me the distance from the piston to the probe. I have heard several different opions about where to mount the probe. Everything from 2" to 9". Please give me some opinions and where you found the info. thanks, Don

[Skinner]

You could spend a lifetime trying to find the absolute sweet spot in the pipe for an EGT probe. This is no fixed science. The EGT temps should be used for no more than a benchmark in exhaust temps simply because of the infinate variables. We have found that six inches from the piston works good in a max4 unlike its little twin sister that likes 9 inches. Is there a better spot??? Probably. Make sure you read your plugs against the temps on the guage to develop a reliable correspondence between the two. Hope this helps ya

[SleeperMax]

Thanks for the input Skinner, I have always read the plugs and thennnnnn.... looked at the EGT temp. Once I was sure that I was running as lean as I considered safe I then made a note of the EGT temp and used those number as a limit. The EGT numbers may or may not be exactly in the sweet spot but I could rest assured that I'm running safe since I know the plugs looked good at that given temp. I like to jet when the outside temperature is in the single digits since it seldom gets below 0 here in Ohio. Don