Re: what temp thermostat
[Re: cheapstreetdustr]
#1171089
02/05/12 10:56 AM
02/05/12 10:56 AM
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Joined: Oct 2003
Posts: 21,345 Marysville, O-H-I-O
70Cuda383
Too Many Posts
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Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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alot depends on ur cooling system,(rad size). i run a 180. no over heating issues. a 160 doesn't keep the water in the rad long enough to cool. that's what tech said at becool. seeya.
WOW! this rumor rears its ugly head again
so chemistry and physics is bogus?
No. Chemistry and Physics are NOT bogus.
But, if the water passes through the radiator "too fast to cool off" then I guess it's also passing through the engine "too fast to heat up," right?
the longer it sits in the engine, the hotter it gets, the longer it sits in the radiator, the colder it gets. pass the water through the engine faster, it won't get as hot, but then also won't carry as much heat (per gallon) into the radiator to cool down. however, you're still transferring the same joules of heat per minute into the water, and transferring the same joules of heat per minute into the radiator/ambient air. the only difference is how many gallons of water are flowing through your engine as you do it.
**Photobucket sucks**
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Re: what temp thermostat
[Re: 70Cuda383]
#1171092
02/06/12 01:11 AM
02/06/12 01:11 AM
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Joined: Feb 2004
Posts: 6,257 acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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if your running a car new than 92 ish it might have an aluminum radiator. however like the cuda in the picture it would be pertinant to ask if its an copper radiator or a newer aluminum style radiator. as your explaination from griffin would be related to a modern aluminum... also some engines are reverse flow to heads first then to block to radiator. next would be to assume the radiator in the vehicle is of appropriate size and or the fan is efficient. if the cooling hardware being employed is not sufficient than you will get heat soak if your not running a t-stat lots of cars have old copper radiators that fit the chassis from the factory .then they for example put a big block in a car that has a small block sized radiator. or over bore cyl walls that factors in..or raise compression.. not to exclude running alcohol as fuel that is a factor as it runs cooler
the griffin example as i read it refers to their radiators...which are more modern aluminum and most often oversized.. so all things being equal i would still stand on my conviction... heat soak can be a factor with out a t-stat or even with a t-stat if the system isnt sized properly or efficient for the application
not knowing these things and making an judgement would be an assumption
and at this point we are still ignoring the whole premise to his question..which is what is a good,adequate or best temp to maintain for his application..the only way to maintain a constant temp is with a t-stat.. i might say..if its an iron head iron block id go 175-180 depending on carb or carbs. if its a high compression or supercharged i might say 160 or if your at high elevation .. if its aluminum headed i might say go with 185 or 195 .. ditto if its an alcohol fuel.
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]
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Re: what temp thermostat
[Re: TomZ]
#1171094
02/06/12 03:22 PM
02/06/12 03:22 PM
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Joined: Aug 2003
Posts: 43,315 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,315
Bend,OR USA
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I was just wondering the same thing. The 1971 Chrysler service manual says the thermostat should be 185 degrees. But Napa, AutoZone and O'Reilly's only carry 160, 180, and 195. They all claim 195 is OEM temp., but not according to my manual. For a nearly stock 318 motor, think its better to run 180 because that's closest to 185, or run 195 because a little hotter is better than colder?
Cold motors wear, ot motors don't Thats what I ahve been told by many engineers and old time mechanics
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: what temp thermostat
[Re: Cab_Burge]
#1171095
02/06/12 03:47 PM
02/06/12 03:47 PM
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Joined: Jul 2006
Posts: 4,319 Puyallup, WA
StealthWedge67
master
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master
Joined: Jul 2006
Posts: 4,319
Puyallup, WA
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If we're talking about at what point a motor would start to allow blow-by past the rings, and just basically be "worn out", Is it safe to assume that the difference we're looking at is the 180* motor goes 130k - 150k miles, while the 160* motor maybe showing the same wear by 100k. (???) Most posters in this forum are asking about hobby type motors that are in weekend cars, and would take 50 years to see 100k mi. I doubt the wear issue is a factor in these discussions. I run a 160 stat in my car because I've seen evidence at the strip that tells me it makes more power there than it does at 180. Also, with a 160 stat, if I get stuck in traffic (or idling through the staging lanes) on a hot day and my temp climbs, It takes a while to get to 200. If I start at 180 and get stuck in the same traffic, It's a much shorter window I have before its at 200.
LemonWedge - Street heavy / Strip ready - 11.07 @ 120
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