180* T-Stat ? HELP
#23
11-28-2011 | 01:38 AM
Grand Champion
Joined: Apr 2010
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From: Meeker, CO
The thermostat, though, doesn't explain the low idle speed. Have you tried cleaning your IAC?
#24
11-28-2011 | 01:46 AM
Legend
Joined: Mar 2011
Posts: 8,914
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From: Fredericksburg, Virginia
4085spd:
Those quates are a little contradictive.
Seems to me if it is richining the fuel mix, it may make more power, but gas milage is going down.
Anyway, I don't know where my gauge coincides with the actual temp, but it definately is running Much cooler with the 180* Stat.
With the 195* Stat it ran perfect and gas milage was a couple mpg better.
Use to idle at 600-650 rpm, now it idles at about 400 rpm and a slight miss at idle once in awhile.
This is the temp difference, notice where the arrow is, that was where it ran with the 195* Stat.
Those quates are a little contradictive.
Seems to me if it is richining the fuel mix, it may make more power, but gas milage is going down.
Anyway, I don't know where my gauge coincides with the actual temp, but it definately is running Much cooler with the 180* Stat.
With the 195* Stat it ran perfect and gas milage was a couple mpg better.
Use to idle at 600-650 rpm, now it idles at about 400 rpm and a slight miss at idle once in awhile.
This is the temp difference, notice where the arrow is, that was where it ran with the 195* Stat.
With my stock 195* Tstat, my engine temp stays just pretty much where your's is in that picture, which is probably, what in between 180-190*?
#25
11-28-2011 | 01:55 AM
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Joined: Jan 2011
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180 stat will also save your cylinder heads from cracking which there known for doing and is the number 1 cause of this cracking. Heads where not designed for that much heat hence the cracking problems. Number two cause for the cracking was/is engine ping. Beats the crap out of the valves and seats.
Last edited by 4085spd; 11-28-2011 at 02:15 AM.
#26
11-28-2011 | 02:17 AM
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Joined: Feb 2009
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From: Bay Area, CA
180 stat will also save your cylinder heads from cracking which there known for doing and is the number 1 cause of this cracking. Heads where not designed for that much heat hence the cracking problems. Number two cause for the cracking was/is engine ping. Beats the crap out of the valves and seats.
#27
11-28-2011 | 02:31 AM
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Yes thin castings with induction hardened valve seats which doesnt hold up very good when subjected to the higher temps of a 195 stat. Any thin casting be it cylinder bores, heads ect or what have you doesnt take the higher heat very well and will crack in short time if subjected to the higher temps. Mix in engine ping(which is very well known issue with magnum motors) and your replacing cylinder head if not addressed.
#28
11-28-2011 | 03:37 AM
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Joined: May 2011
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From: bellingham wa
#29
11-28-2011 | 03:59 AM
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From: on mother earth
I install a 180 few months back and I gained 2.5mpg in my big ram. Up from 10 in the city to 12.5mpg in a 2500.
My *** dyno also felt a power increase from the switch along with a smoother running truck.
Like the fact dont have to worry about the heads cracking because of the 195 plus my trans runs much cooler because the cooler is in the rad.
My *** dyno also felt a power increase from the switch along with a smoother running truck.
Like the fact dont have to worry about the heads cracking because of the 195 plus my trans runs much cooler because the cooler is in the rad.