Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226261
05/02/12 10:05 PM
05/02/12 10:05 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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It sounds like you have all the right stuff. Even though you are happy with the way it runs, the solution your looking for, lies in the tune up. It could be better and your car will run cooler. Richen it up and see, it can't hurt and I bet helps on the highway.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: mikemee1331]
#1226263
05/02/12 10:07 PM
05/02/12 10:07 PM
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Joined: Jan 2003
Posts: 75,070 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
what type of water pump housing is it? i'm guessing aluminum? there were issues with the inlet being too small.
the bigger question is what water pump , the CCJ housing even though it has restricted flow was not found to be a real huge problem , the CCJ pump is a different story .
Also your 26" rad , 2 row or 3 ?
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226266
05/02/12 10:19 PM
05/02/12 10:19 PM
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Joined: Jan 2003
Posts: 75,070 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,070
U.S.S.A.
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Quote:
3 row rad
20 deg intial. .520/254 solid. Dist is locked, slots welded. I dont recall the total #.
Distributor is locked meaning no mechanical advance ? if so there is your problem , all you have is 20 degrees ...
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226267
05/02/12 10:32 PM
05/02/12 10:32 PM
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Joined: Dec 2007
Posts: 18,157 Mass
DAYCLONA
I Live Here
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I Live Here
Joined: Dec 2007
Posts: 18,157
Mass
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Not too much information on the timing your running, or what type of dist/ignition, or the method of advance...same with the carb?, a lean condition can cause unnecessary heat? what are you doing to determine a lean/rich condition?.....seat of the pants feel is not a good lean/rich indicator, plug readings?, O2 readings?... As far as the mechanical end, IMHO I'd toss the clutch fan, run a factory 7 blade HD fixed fan, the space between the fan to radiator is not as important as how much blade area is inside the shroud, you should have at least 50%-75% of the fan buried inside the shroud for a proper pull, play around with different spacers to achieve the proper spacing, make sure you try and maintain at least 1" or more away from the radiator, as fixed fan blades at high RPMs can "flex" outward towards the radiator... As far as the Chemical end, I'd recommend ZEREX G-05 Antifreeze, distilled water 50/50 mix, and 8-10 oz. of REDLINE water wetter
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Re: Running hot and running out of ideas 67 Belvedere
[Re: JohnRR]
#1226270
05/02/12 10:45 PM
05/02/12 10:45 PM
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Joined: Sep 2003
Posts: 1,688 Marlboro, NY, USA
Rick_Ehrenberg
top fuel
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top fuel
Joined: Sep 2003
Posts: 1,688
Marlboro, NY, USA
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Quote:
Quote:
3 row rad
20 deg intial. .520/254 solid. Dist is locked, slots welded. I dont recall the total #.
Distributor is locked meaning no mechanical advance ? if so there is your problem , all you have is 20 degrees ...
Man, you need closer to 33-35 at 2,500 RPM or above, and 50-55 with vacuum. Not only is it heating up from the spark so late, but all that unburned fuel is killing the rings and cyl walls (fuel wash), and diluting the oil, not to mention making the Arabs rich!
Rick
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226272
05/02/12 11:34 PM
05/02/12 11:34 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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Here is a little more info:
* MP electronic dist, chrome box. 20 deg initial, 16 mechanical, advance springs changed to one light and one heavy
* 800 Edelbrock carb, re-jetted and rods richened, larger needle and seat than box stock
* The plugs look spot on with no signs of too lean or rich and no detonation
* The head gaskets are correct, no cooling holes mis-aligned or blocked, that was all checked before final assembly
* Block was sonic checked before an .030 bore, plenty of material so the walls are not too thin
* The radiator has about 2700 miles since new and was cleaned before the new motor was assembled. 700-800 miles on the new motor. It was new from Year One.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226274
05/02/12 11:55 PM
05/02/12 11:55 PM
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Joined: Jan 2003
Posts: 2,111 Bowie, MD
Reggie
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,111
Bowie, MD
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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.
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Rick_Ehrenberg]
#1226277
05/03/12 10:01 AM
05/03/12 10:01 AM
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Joined: Nov 2003
Posts: 3,449 Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,449
Dandridge TN
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Quote:
Quote:
Quote:
3 row rad
20 deg intial. .520/254 solid. Dist is locked, slots welded. I dont recall the total #.
Distributor is locked meaning no mechanical advance ? if so there is your problem , all you have is 20 degrees ...
Man, you need closer to 33-35 at 2,500 RPM or above, and 50-55 with vacuum. Not only is it heating up from the spark so late, but all that unburned fuel is killing the rings and cyl walls (fuel wash), and diluting the oil, not to mention making the Arabs rich!
Rick
Quote:
Sorry, 20 initial and 16 mechanical. One heavy and one light advance spring.
Okay is it locked or unlocked?
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Re: Running hot and running out of ideas 67 Belvedere
[Re: Belvedere1]
#1226278
05/03/12 10:31 AM
05/03/12 10:31 AM
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Joined: Mar 2008
Posts: 5,746 Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Time for a new rad I went through that years ago finally after some advice had new three rows installed and that was the end of my problems. A shroud helps too! Out of what carb, jets and power valve if applicable?
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