New Cap, Old Hoses

[phil swanson]

One comment here; if you increase psi via cap, always replace old hoses.

Never put a new cap on old hoses; expect ruptures if you do.
- -----Original Message-----

The foregoing are good words of wisdom. I recently changed the cap on my
daughter's Mustang and raised the pressure back to 14 pounds because the
overflow was blowing over and guess what, I left town for a week and she
got stranded with a broken upper radiator hose. It costs me 45 bucks
because Firestone had to fix it for her, in their parking lot no less.

I don't agree with the other gentleman though about dropping the
thermostat temperature. I would stick with the 195. You won't get more
flow with a cooler thermostat because once it is open, it's open. You
should use a good high performance one though with a large mouth to
maximize flow like the high performance Stant. A hotter thermostat will
raise the operating temperature to normal quicker and avoid unburned
fuel from washing the oil from the cylinder walls. Synthetic oil is also
the best route in my opinion. Also you do not get more power from a 180
thermostat. Heat is energy in an internal combustion engine. This
doesn't mean the more the better but it does mean that you want to get
the engine up to operating temperature as quick as possible. An engine
with a 195 degree thermostat doesn't run hotter on the top end than one
with a 180 degree type, it just gets their quicker which is what you
want.

Regards, Phil Swanson

 

[thomas g. warner]

A 180 degree thermostat will never let the engine reach 195 degrees. the
thermostat opening temperature determines the engine block temperature.
With regards to operating temperature of the ENGINE BLOCK, it makes sense to
me to run a 180 degree thermostat instead of a 195 degree one. It takes
lots extra energy to keep that big chunk of iron at 195 degrees. The
engineers went to 195 degree thermostats for pollution control not better
operating efficiency. The point is use the correct thermostat or you will
have over heating. The correct thermostat has a large center hole such as
the a Robert Shaw. I can't find my notes at the moment for the part #.

>One comment here; if you increase psi via cap, always replace old hoses.
>
>Never put a new cap on old hoses; expect ruptures if you do.
>-----Original Message-----
>
>The foregoing are good words of wisdom. I recently changed the cap on my
>daughter's Mustang and raised the pressure back to 14 pounds because the
>overflow was blowing over and guess what, I left town for a week and she
>got stranded with a broken upper radiator hose. It costs me 45 bucks
>because Firestone had to fix it for her, in their parking lot no less.
>
> I don't agree with the other gentleman though about dropping the
>thermostat temperature. I would stick with the 195. You won't get more
>flow with a cooler thermostat because once it is open, it's open. You
>should use a good high performance one though with a large mouth to
>maximize flow like the high performance Stant. A hotter thermostat will
>raise the operating temperature to normal quicker and avoid unburned
>fuel from washing the oil from the cylinder walls. Synthetic oil is also
>the best route in my opinion. Also you do not get more power from a 180
>thermostat. Heat is energy in an internal combustion engine. This
>doesn't mean the more the better but it does mean that you want to get
>the engine up to operating temperature as quick as possible. An engine
>with a 195 degree thermostat doesn't run hotter on the top end than one
>with a 180 degree type, it just gets their quicker which is what you
>want.
>
> Regards, Phil Swanson
>
>
>