|
|
Ok... what's the hole for!???
#471249
09/17/09 08:53 PM
09/17/09 08:53 PM
|
Joined: Sep 2009
Posts: 1,377
Tennessee
WyleECoyote
OP
pro stock
|
OP
pro stock
Joined: Sep 2009
Posts: 1,377
Tennessee
|
Why is there a tiny hole in the flat surface area of the thermostat?  Just curious, George 
Wile E. Coyote
Super Genius, Lover of FCA US LLC Products
*************
68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)
|
|
|
Re: Ok... what's the hole for!???
[Re: jcc]
#471255
09/17/09 10:33 PM
09/17/09 10:33 PM
|
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
|
Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
|
Quote:
Wouldn't it also allow for a vent for water expansion on a cold motor as temp approached the thermostat opening temp, to prevent higher then normal pressures? Regarding bubble venting, that would only happen on an initial coolant fill, right?
A little bit bypasses but the hole is quite small so I don't think it would make too much difference to coolant pressure. Mostly just for air I bet.
Actually on the turbo 2.2L mopar forums, drilling a hole in the t-stat is a common practice when installing a new t-stat because on those cars the head is higher than the top of the rad. There is a vent plug on the head you can back out a bit but often they are siezed so drilling a hole and putting the car up on the ramps will get the air flushed out quick.
|
|
|
|
|
|
|
