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**Halon** · 06-20-2007

I understand that drilling a hole is supposed to allow coolant to pass while it's closed. But I am staring at this thing, and I don't see how that is the case. There are 2 huge openings at the top of this. This ring never moves, nor does anything ever seem to seal up against it. So I don't understand.

06-20-2007	#3
Halon Pewp Champion Join Date: Nov 2003 Location: Blaine Drives: Teh Bean Posts: 12,309	Re: Drilling thermostat I understand that drilling a hole is supposed to allow coolant to pass while it's closed. But I am staring at this thing, and I don't see how that is the case. There are 2 huge openings at the top of this. This ring never moves, nor does anything ever seem to seal up against it. So I don't understand. Attached Thumbnails __________________ B-Man - FlexFuel Mafia 1991 TSi AWD E85 - BEP S362, DSMLink V2, Built 2.0L Idle Vid 628hp Graph 541hp Vid 10.93@137 Vid 1992 SC300 E85 - BW 84-75, Vlad Infinity, NA-T, 6spd Idle Vid 709hp Graph 709hp Vid 11.1@131 Vid 2006 Bayliner 195 - Carbed 5.0 Top Speed Test