I took the Cat out for a late afternoon run

chromebumpers

solid fixture here in the forum
Staff member
Goofy me, I look inside the glovebox and there is a set of gauges, water temp and oil pressure and they work. Weird place to find gauges, how are you supposed to monitor temps and pressure inside a box?
Anyway, it's the mid 80s and a 10 mile country road drive and the water temp reads 210 degrees.
Now last week while up on the lift I noticed there are twin electric fans attached to the front of the radiator, but I haven't heard them come on. What should the water temperature be under these conditions?
 
Is the temp sending unit for the gauge in the head or by the thermostat? Do you have a laser guided heat gun to watch the temp come up and be able to tell when the thermostat opens so you'll know what temp stat was put in? Is there a stock fan setup besides the electric fans? Does there appear to be a sensor stuck in the radiator for an adjustable thermostatic switch that turns the fans on?

The fans in front of the radiator are probably a clue that the previous owner had overheating problems. I've seen them on many cars as a band aid and they're often installed incorrectly. Unless purchased specifically as pusher fans the polarity usually has to be reversed and for some models of fans the blade has to be flipped. Some are not recommended to be used as pushers at all.

Need more info and pics would be good.
 
There is two temperature sending units, one next to the thermostat that must be for the factory idiot light and the other one is for the gauge in the glovebox, I have to trace where that is connected.
The Laser gun is a cheap HF - are those accurate enough?

There is an original non flex blade fan.
It appears there is a sensor wire and somebody ran it along the neck and inside the top radiator hose, you can't see the sensor end ( I'll provide photos later). Again, I'll trace that wire and see if it connects to a thermostatic switch or something else.
Last week, among a lot of other things I purchased a new high flow thermostat made for 190 degrees taking a guess that is the factory setting. I planned to install it when I detailed the engine some day.
 
I ran the car for 20 minutes in park. According to the glove box gauge (I love that) the coolant never went above the low 190's. The top hose didn't start getting hot until 190 degrees. The electric fan never came on so I'll have to find the connection and check for power. The fan is attached on the front of the A/C condenser not in the middle but the right side and there is a small cooler about 6" X 6" on the left side front of the condenser - I didn't see what that's for just yet. My coolant tester is MIA, so it's to the store again.
 
Sounds like thermostat is functioning properly. The small cooler is probably a transmission cooler.
 
Its an auxiliary add on transmission cooler.

I snuck by DC Late last night Grumpy.
Pretty quiet.
Many seem to know I am missing.
Especially Junkman. He called me the Doctor recent.

We are now in an era of all bolt on LS.
To all Race Math no longer matters or exists.
None there know how to use it or care to.
There will be A Big Kaboom coming from a C5 DC Corvette on NOS Fogger spray soon.

Another few Kabooms on C3's.

We are the very last on this site.

I am the Last 1970 T/A RA4 Poncho Drag Racer.
 
yeah! I know the vast majority of the guys on most sites can,t seem to get past the basic
" buy the advertized performance part,
take it out of box and bolt it on,
level of performance"
in fact many of the guys PAY someone else to install parts as they have neither the skills tools or desire to actually get thier hands dirty nor an understanding of how or why the part functions., and certainly no experience modifying or fitting and installing components to maximize the parts potential.

trying to reduce the fear, or reluctance of many guys of getting their hands dirty,
helping guys understand how and why parts work, and expanding the number of guys who have the skill and desire to learn is a major factor in why I started this site!
 
Last edited:
yeah! I know the vast majority of the guys on most sites can,t seem to get past the basic
" buy the advertized performance part,
take it out of box and bolt it on,
level of performance"
in fact many of the guys PAY someone else to install parts as they have neither the skills tools or desire to actually get thier hands dirty nor an understanding of how or why the part functions., and certainly no experience modifying or fitting and installing components to maximize the parts potential.

trying to reduce the fear, or reluctance of many guys of getting their hands dirty,
helping guys understand how and why parts work, and expanding the number of guys who have the skill and desire to learn is a major factor in why I started this site!



Tell Junk I said Hi.
It was time for me to leave in 2014.
I helped did All I could.
Just stand back and watch.
Work on my own.
I did my job on DC for Junk.
 
Last edited by a moderator:
yeah! I know the vast majority of the guys on most sites can,t seem to get past the basic
" buy the advertized performance part,
take it out of box and bolt it on,
level of performance"
in fact many of the guys PAY someone else to install parts as they have neither the skills tools or desire to actually get thier hands dirty nor an understanding of how or why the part functions., and certainly no experience modifying or fitting and installing components to maximize the parts potential.

trying to reduce the fear, or reluctance of many guys of getting their hands dirty,
helping guys understand how and why parts work, and expanding the number of guys who have the skill and desire to learn is a major factor in why I started this site!
The Race Engine Math lessons and links have been invaluable for me Grumpy.
Almost to work.
Chat later.
 
I don't know why most hate Race Engine Math & Race Car Math.
I LOVE IT Grumpy.
 
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