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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226280
05/03/12 12:07 PM
05/03/12 12:07 PM
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Joined: Jun 2006
Posts: 5,159
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,159
CT
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Hook the vacuum advance up, I bet it runs cool
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Running hot and running out of ideas 67 Belvedere
[Re: GTX MATT]
#1226281
05/03/12 12:13 PM
05/03/12 12:13 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Too Many Posts
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
Hook the vacuum advance up, I bet it runs cool
Yup, why isn't it hooked up?
welding up the slots to limit timing is not locking it out, I think your confused on that point.
Why happens to your timing when you you have a timing light on it and you rev it up?
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Re: Running hot and running out of ideas 67 Belvedere
[Re: ThermoQuad]
#1226285
05/03/12 03:02 PM
05/03/12 03:02 PM
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1
Too Many Posts
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Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
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Quote:
220 degrees is warm, it is not hot.
Your thermostat opening temp is too low. Opening Temp has nothing to do with operating temp except to keep engine above a specified temp.
Disconnect the radiator trans cooler and just run the external one.
No need in the southwest for the radiator trans cooler.
Today's fuel requires a 195 degree thermostat.
Do not use water wetter-causes issues if left in too long.
60% water, 40 % antifreeze, bottle of "be cool"
Use the viscous fan and a thermostatic fan clutch, do not use direct drive or any aftermarket fan. It's in the book-the mopar book. I did not make this up. I think mother Mopar's Larry Shepard might have a clue so be careful with advice you get from the internet.
Your radiator core is suspect-the center tubes are probably restricted, so some diagnosis with IR temp gun will tell you everything you need to know before throwing mud at the wall. Cheap ones are at China Freight.
Did you read the part about the thermostat??? that's not an old wives tale.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Reggie]
#1226286
05/03/12 03:24 PM
05/03/12 03:24 PM
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Joined: Jan 2003
Posts: 27,451
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,451
So Cal
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Quote:
Quote:
The fan clutch is sitting 7/8" - 1" away from the radiator and using a factory shroud.
That might be the problem. The fan should sit out enough from the edge of the shroud to pull cool through the radiator. Otherwise you're just blowing hot air around inside the shroud instead of pulling cool air through the radiator.
The blades of the fan shroud be 1/2 in the shroud, 1/2 out of the shroud
Optimum fan to shroud total clearance is 10% of the shroud's diameter. The total clearance is both sides of the fan. So... 20" fan shroud should have 2" of total clearance. And that will be 1" on both sides of the fan.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: WheelsUp73]
#1226288
05/03/12 04:59 PM
05/03/12 04:59 PM
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Joined: Jan 2003
Posts: 1,261
Phoenix, AZ
Belvedere1
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,261
Phoenix, AZ
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What is the wives tale on t-stats, I dont have the book??
Last edited by Belvedere1; 05/03/12 07:09 PM.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: ThermoQuad]
#1226289
05/03/12 05:28 PM
05/03/12 05:28 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 74,942
U.S.S.A.
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Quote:
I think mother Mopar's Larry Shepard might have a clue so be careful with advice you get from the internet.
I think the words "MIGHT HAVE" should be changed to "SOMETIMES HAS" in this sentence ...
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Re: Running hot and running out of ideas 67 Belvedere
[Re: JohnRR]
#1226290
05/03/12 06:11 PM
05/03/12 06:11 PM
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Joined: Jan 2003
Posts: 5,890
Athens, Greece
Pyper70
master
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master
Joined: Jan 2003
Posts: 5,890
Athens, Greece
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I'll poke at this one only because it happened to my Dart once...My water temp was hitting 220 down the road...weird for a Slant 6 to have that happen. Everything was in tip top shape. I checked my Trans dipstick and I was a little low. I topped off the trans and got back to business as usual. I can only assume that the trans overheats and since it is aluminum and mated through a bell housing, you are heating up the coolant from the transmission side.
Have you run an A/F meter on it? make sure you have the right numbers through your powerband. The idle circuit is pointless...our cars don't sit at idle most of the time... you have to get out there to test and tune.
Not to hijack the thread but I have a 440, AC pump, factory cast iron housing and cast pump. 10:1, Eddy heads, Dual 500cfm Carbs. 26inch 4 core radiator, tranny cooler, 7-blade with viscous, 180º Napa stat (Mr Gasket are trash, bad QA). I even threw in Water Wetter. I know I have some test and tune because I just got my RPM heads on but I hit 180º driving down the road and 195º in traffic.
I have no vacuum advance. Its a mechanical dizzy. Are you sure your dizzy is setup correctly?
Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226292
05/03/12 07:22 PM
05/03/12 07:22 PM
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Joined: Jun 2006
Posts: 5,159
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,159
CT
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It sounds like it probably it, but you should still run the vacuum advance. Just give it a try and see if it stops overheating.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226293
05/03/12 07:46 PM
05/03/12 07:46 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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You've spent a lot of money on this car. Now go spend $39 dollars for a tool.
Go to Harbor Freight and buy an IR temp gun.
Get the car up to temperature.
Measure the temperature of the water neck.
Measure the temperature of the radiator where the upper hose goes in. It should be very close to the temp of the water neck, assuming the thermostat is open.
Measure the radiator where the lower hose goes out.
There should be a minimum of 30 degrees temperature drop in the radiator. If not, measure the temp of the radiator core in a grid.
Measure every couple inches across the top of the core.
Drop two inches and measure across again.
Repeat until you've measured the whole core.
The temp drop should be gradual. If you have any cold spots the core is plugged.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226295
05/04/12 12:20 AM
05/04/12 12:20 AM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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http://www.harborfreight.com/non-contact-laser-thermometer-96451.html $39.99. Sure, there may be better units out there but what you're looking for is a noticeable change in temperature. When my Imperial had a clogged radiator there were areas where the temperature dropped almost 50 degrees lower than surrounding bits of the radiator.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226297
05/04/12 12:33 AM
05/04/12 12:33 AM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
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Senior Management
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Irving, TX
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Before you start changing parts, grab the temp gun and check things out.
Putting a little distance between the trans cooler and radiator may help a wee bit.
I'm not a fan of attaching things to the radiator core.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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