best fan setting with 180 tstat via predator

[sir300csrt8]

what is the best fan setting with the 180 f tstat

thank s

[EricG]

That is dependant on exactly what temp you are running when the car is on the highway. Take that number and go maybe +5 for the low speed, and +15 for the high speed. There is no meduim fan for our car, make the meduim the high speed.

Eric

[sir300csrt8]

good !!!! thank s

[jamesdtuttle]

Originally Posted by sir300csrt8

what is the best fan setting with the 180 f tstat

thank s

I'm using the same settings as the site performance moderator. He's in Florida and I'm in Houston, so both of us are in hot, humid places.

With a Jet 180 thermostat, low fan is set to 185, high fan to 195.

This seems to work well, and I've noticed a significant performance improvement.

[DESIREE]

One of the concerns with setting the fan-on temperature is having the fans run continuously because the coolant temperature never gets low enough to completely turn them off. Not necessarily a good thing for the fan motors, albeit on low speed.
I asked Diablo Sport what is the differential between fan-on and fan-off temperatures. They said 10*F. With the 4128 thermostat my car runs around 185-187*F so I set the low speed fans to come on at 197*F and the high speed fans to come on at 207*F. When the fans kick on I can see the temperature drop to 183-185*F at which point they shut down and the t-stat closes, and the temperature rises to 197-199*F, and the fans kick on again.
Today in 93*F ambient air temperature just cruisin' around town and sitting in line at the Wendy's drive-thru window, all with the A/C on full, engine temperature never went above 197*F.
It works (and well) for me.

[GoofyTimL]

If you A/C in "on" then the low speed fan is on as well... constantly. It is designed to and will run continuously under those conditions. My 4128 Tstat controls at 183-185, so I turn the high speeds on at 202. I very rarely see coolant temps in the 190s unless I'm really in stop and go for a long time.

[Mr. iNCREDIBLE]

Originally Posted by EricG

That is dependant on exactly what temp you are running when the car is on the highway. Take that number and go maybe +5 for the low speed, and +15 for the high speed. There is no medium fan for our car, make the medium the high speed.

Eric

hmmm, not so sure about that.. I programmed my fans

LS = 190
MS = 197
HS = 207


and I can defiantly hear a pitch change from 190 to 197 and it is not on high..

I have stood in front of the car and waited for it, and it goes from low to medium to high...

there is a definite change in the pitch of the fans from the low speed to a middle speed..

when I programmed the Medium at a higher level than the High (reversed the 2 temps) there is a definite down kick from high to medium.

[sir300csrt8]

so there s a med speed....well i will check that out.... i just dont wont my fan to run for noting ( a/c off ).... so

ls at 190
ms at 197
hs at 207

that sould be good ....

[Fisch]

Originally Posted by Mr. iNCREDIBLE

hmmm, not so sure about that.. I programmed my fans

LS = 190
MS = 197
HS = 207


and I can defiantly hear a pitch change from 190 to 197 and it is not on high..

I have stood in front of the car and waited for it, and it goes from low to medium to high...

there is a definite change in the pitch of the fans from the low speed to a middle speed..

when I programmed the Medium at a higher level than the High (reversed the 2 temps) there is a definite down kick from high to medium.

What??? Everything I've heard has been that there is NO medium fan in the 300 - hence, the matching of the med and high settings for the fan.

If it were anybody else, I'd probably write this off, but you Mr. I? This is actually true? Still can't wait for my Predator!

[Mr. iNCREDIBLE]

remember, the 2005 early build cars are different than the later models (including the SRT) I don't know that it is true for all models, but on my car I know there are 3 speeds occuring on the fans..