Reply To: Gt250 almost no compression Oct 25, 2024 at 1:28 PM #15345 ♠️ M77👑 Admin Topics: 40Replies: 3,033Country: UKBike Model: GT When cold (overnight cold) 0.10 – 0.20mm = All intake 0.20 – 0.30mm = All exhaust Sweet spot = 0.12 for intake , and o.24 for exhaust , just to avoid being at the edge of either number!