CLASS RACER FORUM - View Single Post

Adger Smith · 08-09-2015, 07:18 PM

"If" the mixture is what is causing the EGT difference, yes. There are many variables besides mixture that can cause EGT differences. To list just a few: Rocker ratio differences, cam twist, ignition timing variation, intake air flow & Ex air flow, Compression differences, cam/valve timing & even spark plug heat range differences. What I was trying to say is EGT and now O2's are only part of the tuning equation. Never base a complete tuneup on just an EGT reading & never let anyone tell you you have to have a certain EGT. Find the EGT# where your combination makes the most power. Then when the conditions change record the change and tune around it.

08-09-2015, 07:18 PM	#7
Adger Smith VIP Member Join Date: Dec 2001 Location: Texarkana Ark/TX Posts: 2,446 Likes: 575 Liked 880 Times in 311 Posts	Re: EGT readings "If" the mixture is what is causing the EGT difference, yes. There are many variables besides mixture that can cause EGT differences. To list just a few: Rocker ratio differences, cam twist, ignition timing variation, intake air flow & Ex air flow, Compression differences, cam/valve timing & even spark plug heat range differences. What I was trying to say is EGT and now O2's are only part of the tuning equation. Never base a complete tuneup on just an EGT reading & never let anyone tell you you have to have a certain EGT. Find the EGT# where your combination makes the most power. Then when the conditions change record the change and tune around it. __________________ Adger Smith (Former SS)