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SG4247 · 07-04-2025, 06:54 PM

I think blocking off the heater circuit would be no big deal, with minimal impact to the operating temperature. Might actually run a little bit hotter with the heater blocked because normally there would be a small temperature drop in the heater circuit as it circulates, even with no air flow across the core.

I wonder if one could block off both the ports on the side of the block, but I don’t really understand the purpose of the circulation loop on the back of the head on bank 2? Unless it’s to warm up and open the thermostat earlier than without it? I know my engine warms up really fast in stock configuration.

07-04-2025, 06:54 PM	#4 (permalink)
SG4247 Track Member Join Date: Oct 2016 Location: OKC Posts: 822 Drives: 2010 touring Rep Power: 7843	I think blocking off the heater circuit would be no big deal, with minimal impact to the operating temperature. Might actually run a little bit hotter with the heater blocked because normally there would be a small temperature drop in the heater circuit as it circulates, even with no air flow across the core. I wonder if one could block off both the ports on the side of the block, but I don’t really understand the purpose of the circulation loop on the back of the head on bank 2? Unless it’s to warm up and open the thermostat earlier than without it? I know my engine warms up really fast in stock configuration. __________________ NA on E85 - 12.402 @ 112 mph 100 shot E85 - 11.589 @ 117 mph JWT C2 cams rev Base Circle & Titan Valves Last edited by SG4247; 07-04-2025 at 07:03 PM.