Mike Romain

-jc wrote:
>
> "Mike Romain" <romainm@sympatico.ca> wrote ...
> > >
> > > > I used to cut an appropriate sized piece of cardboard and stuff it
> > > between
> > > > the grill and the radiator.
> > >
> > Cardboard can be dangerous.....
>
> I'm sure someone could find a way to make it so but it was never a problem
> for me and anyone I knoew that did it.
>
> > On the highway or running hard or in a fast outside temperature swing,
> > the engine can overheat. It is really not good to have the same rad
> > blockage on the highway as the city and getting out to try and dig that
> > piece of cardboard out in the freezing cold, well....
>
> Keeping an eye on your gauges should keep you from overheating the engine.
> Never was an issue for the 8-10 years I did it.

These vehicles had idiot lights that only flag a boil over. One GMC 350
blew the top rad hose 10 seconds after the damn light came on when I
went from -25C to 0C in an hour's time on the highway. (older hose, but
still...)

I have also done trips where it went from +2C pissing rain to -30C
blizzard in a 20 minute stretch.

>
> > I have seen more than a few engines with baked valve guide seals because
> > of that, including a couple of mine the previous owners had baked.
> > (knew the owners) You know, that nice blue puff on first startup...
>
> Blue is oil. Black is fuel. White is water.

Yup, blue as I said, heat baked valve guide seals. Change the seals,
and no more oil burning or blue clouds in the morning.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Mike Romain

I wish.

It don't work like that up here in the Great White North.

The t-stat will stay closed or 'just' crack open in the real cold.
Blocking the rad will let it heat up enough to open the t-stat and
actually have 195 deg coolant flowing.

Otherwise it is only very luke warm.

The t-stat opens a bit and the hot coolant hits -40 in the rad and shuts
down the t-stat real quick.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Roy J wrote:
>
> If your thermostat is working properly, the radiator is shut off
> anyway. If your aren't getting enough heat, you need to do the
> heat drill:
> -flush and refill cooling system
> -rebuild heater core
> -new thermostat
> -does the Cherokee have the small or big fan motor? It shares a
> lot of parts with the Wrangler of that vintage
>
> Cheers.
>
> Kyonn Gowans wrote:
> >>I used to cut an appropriate sized piece of cardboard and stuffed it
> >
> > between
> >
> >>the grill and the radiator. But that was I was poor(er).
> >>- Jeff
> >
> >
> > Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> > to do something cause it just takes my car way to long to warm up in the
> > dead of winter.
> >
> >
> >
> >

Mike Romain

I wish.

It don't work like that up here in the Great White North.

The t-stat will stay closed or 'just' crack open in the real cold.
Blocking the rad will let it heat up enough to open the t-stat and
actually have 195 deg coolant flowing.

Otherwise it is only very luke warm.

The t-stat opens a bit and the hot coolant hits -40 in the rad and shuts
down the t-stat real quick.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Roy J wrote:
>
> If your thermostat is working properly, the radiator is shut off
> anyway. If your aren't getting enough heat, you need to do the
> heat drill:
> -flush and refill cooling system
> -rebuild heater core
> -new thermostat
> -does the Cherokee have the small or big fan motor? It shares a
> lot of parts with the Wrangler of that vintage
>
> Cheers.
>
> Kyonn Gowans wrote:
> >>I used to cut an appropriate sized piece of cardboard and stuffed it
> >
> > between
> >
> >>the grill and the radiator. But that was I was poor(er).
> >>- Jeff
> >
> >
> > Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> > to do something cause it just takes my car way to long to warm up in the
> > dead of winter.
> >
> >
> >
> >

Mike Romain

I wish.

It don't work like that up here in the Great White North.

The t-stat will stay closed or 'just' crack open in the real cold.
Blocking the rad will let it heat up enough to open the t-stat and
actually have 195 deg coolant flowing.

Otherwise it is only very luke warm.

The t-stat opens a bit and the hot coolant hits -40 in the rad and shuts
down the t-stat real quick.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Roy J wrote:
>
> If your thermostat is working properly, the radiator is shut off
> anyway. If your aren't getting enough heat, you need to do the
> heat drill:
> -flush and refill cooling system
> -rebuild heater core
> -new thermostat
> -does the Cherokee have the small or big fan motor? It shares a
> lot of parts with the Wrangler of that vintage
>
> Cheers.
>
> Kyonn Gowans wrote:
> >>I used to cut an appropriate sized piece of cardboard and stuffed it
> >
> > between
> >
> >>the grill and the radiator. But that was I was poor(er).
> >>- Jeff
> >
> >
> > Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> > to do something cause it just takes my car way to long to warm up in the
> > dead of winter.
> >
> >
> >
> >

Roy J

If your thermostat is working properly, the radiator is shut off
anyway. If your aren't getting enough heat, you need to do the
heat drill:
-flush and refill cooling system
-rebuild heater core
-new thermostat
-does the Cherokee have the small or big fan motor? It shares a
lot of parts with the Wrangler of that vintage

Cheers.



Kyonn Gowans wrote:
>>I used to cut an appropriate sized piece of cardboard and stuffed it
>
> between
>
>>the grill and the radiator. But that was I was poor(er).
>>- Jeff
>
>
> Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> to do something cause it just takes my car way to long to warm up in the
> dead of winter.
>
>
>
>

Roy J

If your thermostat is working properly, the radiator is shut off
anyway. If your aren't getting enough heat, you need to do the
heat drill:
-flush and refill cooling system
-rebuild heater core
-new thermostat
-does the Cherokee have the small or big fan motor? It shares a
lot of parts with the Wrangler of that vintage

Cheers.



Kyonn Gowans wrote:
>>I used to cut an appropriate sized piece of cardboard and stuffed it
>
> between
>
>>the grill and the radiator. But that was I was poor(er).
>>- Jeff
>
>
> Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> to do something cause it just takes my car way to long to warm up in the
> dead of winter.
>
>
>
>

Roy J

If your thermostat is working properly, the radiator is shut off
anyway. If your aren't getting enough heat, you need to do the
heat drill:
-flush and refill cooling system
-rebuild heater core
-new thermostat
-does the Cherokee have the small or big fan motor? It shares a
lot of parts with the Wrangler of that vintage

Cheers.



Kyonn Gowans wrote:
>>I used to cut an appropriate sized piece of cardboard and stuffed it
>
> between
>
>>the grill and the radiator. But that was I was poor(er).
>>- Jeff
>
>
> Yeah I've seen people do that, but I'm trying to avoid it if I can. I need
> to do something cause it just takes my car way to long to warm up in the
> dead of winter.
>
>
>
>

DougW

Roy J did pass the time by typing:
> It gets colder here than where you are. -40F is the same as -40C
> And you still have 195 degree water no matter what if the
> thermostat is working. I will agree that if you have the heater
> blowing full blast, that may be enough to cool the engine until
> the cab warms up or maybe it never comes up to temp if you are
> sucking outside air.
>
> I still wish the newer FI engines had a proper engine heating
> like my '68 Olds V-8 had: Dual exhaust had a thermostat in one
> pipe, shut that one pipe off and directed half the exhaust
> thorugh the intake manifold. Add in the heated intake and I could
> get regular gas mileage at -30F on the highway. (Which wasn't
> great but it would go to 5 mpg in really cold weather.

Usually put on a different intake on the old Chevy just for winter
that took air from under the hood rather than ducting it from the
front.

Usually that pipe just sucks the intake air around the exhaust
header, doesn't actually take in exhaust. In real cold climates
you may even see heater lines running to the intake. And I'm talking
REAL cold. breathcicle cold.

Just thinking of that makes me want hot chocolate.

brr.

--
DougW

DougW

Roy J did pass the time by typing:
> It gets colder here than where you are. -40F is the same as -40C
> And you still have 195 degree water no matter what if the
> thermostat is working. I will agree that if you have the heater
> blowing full blast, that may be enough to cool the engine until
> the cab warms up or maybe it never comes up to temp if you are
> sucking outside air.
>
> I still wish the newer FI engines had a proper engine heating
> like my '68 Olds V-8 had: Dual exhaust had a thermostat in one
> pipe, shut that one pipe off and directed half the exhaust
> thorugh the intake manifold. Add in the heated intake and I could
> get regular gas mileage at -30F on the highway. (Which wasn't
> great but it would go to 5 mpg in really cold weather.

Usually put on a different intake on the old Chevy just for winter
that took air from under the hood rather than ducting it from the
front.

Usually that pipe just sucks the intake air around the exhaust
header, doesn't actually take in exhaust. In real cold climates
you may even see heater lines running to the intake. And I'm talking
REAL cold. breathcicle cold.

Just thinking of that makes me want hot chocolate.

brr.

--
DougW

DougW

Roy J did pass the time by typing:
> It gets colder here than where you are. -40F is the same as -40C
> And you still have 195 degree water no matter what if the
> thermostat is working. I will agree that if you have the heater
> blowing full blast, that may be enough to cool the engine until
> the cab warms up or maybe it never comes up to temp if you are
> sucking outside air.
>
> I still wish the newer FI engines had a proper engine heating
> like my '68 Olds V-8 had: Dual exhaust had a thermostat in one
> pipe, shut that one pipe off and directed half the exhaust
> thorugh the intake manifold. Add in the heated intake and I could
> get regular gas mileage at -30F on the highway. (Which wasn't
> great but it would go to 5 mpg in really cold weather.

Usually put on a different intake on the old Chevy just for winter
that took air from under the hood rather than ducting it from the
front.

Usually that pipe just sucks the intake air around the exhaust
header, doesn't actually take in exhaust. In real cold climates
you may even see heater lines running to the intake. And I'm talking
REAL cold. breathcicle cold.

Just thinking of that makes me want hot chocolate.

brr.

--
DougW