Re: panic moment , 260 coolant temp
[Re: gregcharger72]
#2930650
06/06/21 10:13 PM
06/06/21 10:13 PM
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Joined: Jan 2003
Posts: 11,711 Portage,michigan
B3422W5
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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I started my charger this morning after unloading from the trailer, walked away to go get a wrench from the garage, gone about 5 - 10 min or so. when i came back to get to the car i noticed the temp gauge at 255 degrees. My electric fan never came on. Found the relay failed. Would that 255 - 260 degree coolant temp hurt the motor? Its a 440 ,trick flow heads. never runs hot otherwise. I did a compression test all cylinders at 210 - 215 psi. Anyone have a similar experience ? Did similar thing twice just last year. Left a little cruise in place in my low 11 sec 360 powered 69 Dart. Pulled out after dark, and forgot to turn on both the electric water pump and fan. Got back to my shop with the car before i noticed it... was at 250-260.... Did the exact same stupid thing about a month later. Went to same place, did same thing Raced the car afterwords, extensively, zero issues. Probably 60-70 passes, and more street driving. Car was fine. Pulled the heads off over this past winter, everything looked great. Got very lucky. Since have sold the motor and installed a small block stroker in the car
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, 10.40 @127 1/4 1.41 best 60 foot 6.60 at 103.90 1/8
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Re: panic moment , 260 coolant temp
[Re: gregcharger72]
#2930653
06/06/21 10:18 PM
06/06/21 10:18 PM
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Joined: Aug 2003
Posts: 43,176 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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I've seen that happen more than once, me included on the switch being for gotten when warming up the car and also popping a fuse once.. My thinking is as long as their is liquid coolant in the heads and block your good, even if the radiator cap opens and dumps a bunch of coolant out
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: panic moment , 260 coolant temp
[Re: gregcharger72]
#2930700
06/06/21 11:23 PM
06/06/21 11:23 PM
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Joined: Oct 2005
Posts: 270 Anchorage, Alaska
metallicareload
enthusiast
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enthusiast
Joined: Oct 2005
Posts: 270
Anchorage, Alaska
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While mine didn't get quite as hot, 240 degrees at least, it was up there for what seemed like an eternity (better part of a half hour). Idling through traffic trying to get into the airshow. It seemed fine afterwards
440, 4-Speed, 3.54 1968, when Dinosaurs ruled the Earth
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Re: panic moment , 260 coolant temp
[Re: metallicareload]
#2930707
06/06/21 11:30 PM
06/06/21 11:30 PM
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Joined: Jan 2003
Posts: 4,270 Morrow, OH
markz528
master
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master
Joined: Jan 2003
Posts: 4,270
Morrow, OH
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My 528 got at least that hot at least once and had no ill effects.
67 Coronet 500 9.610 @ 139.20 mph 67 Coronet 500 (street car) 14.82 @ 94 mph 69 GTX (clone) - build in progress......
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Re: panic moment , 260 coolant temp
[Re: markz528]
#2930767
06/07/21 08:15 AM
06/07/21 08:15 AM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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My 528 got at least that hot at least once and had no ill effects. Don't worry about it. Had the same thing happen to my hemi.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: panic moment , 260 coolant temp
[Re: MR_P_BODY]
#2930983
06/07/21 05:02 PM
06/07/21 05:02 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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I had a 318 TBI dakota when I moved here, between tools in the bed and trailer I was hauling over 10,000lbs and the temp ran constantly around 240-even 250 occasionally when pulling hills over the course of 2000 miles and never seemed to hurt anything but I was sure frazzled over it the whole way with the heat cranking in 100 degree weather, drove it thousands of miles after I got here with it and never had an issue and didn't ever run over 200 when not towing. I bet if it had aluminum heads it would have dropped a valve seat.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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