Temperature update
Thread Starter
Instructor
Joined: Feb 2003
Posts: 176
Likes: 0
From: jacksonville florida
Temperature update
I changed my Tstat to a 160 degree from a 180 and drove it in some 90 plus temps,The engine ran at 170 degrees untill I turned on the AC and then it reached 190 to 195 at 50+ MPH,When I used it in traffic it started to climb to around 210 before I shut it off,When I had the 180 Tstat in the engine ran at 190 at highway speeds and about 210+ in traffic,Ican see that I will not be able to use the AC in traffic but on the highway I can. :auto:
Le Mans Master
Joined: Mar 2002
Posts: 7,456
Likes: 2
From: Coming home from Luckenbach Texas
Re: Temperature update (hauk)
Why can't you run A/C in traffic? There's nothing wrong with these temps. Let us know when you get over 230. Yesterday, mine was running between 190-210 at 95 degrees outside -- with A/C on. Never touched the 220 line. This is BETTER than normal for these cars!
It's hard to accept, but these cars run hot. They were designed to do so for emissions purposes. The factory aux electric fan in my car isn't even designed to come on until 238 degrees!!!
Many people waste money trying to fix a problem that isn't there. :smash:
It's hard to accept, but these cars run hot. They were designed to do so for emissions purposes. The factory aux electric fan in my car isn't even designed to come on until 238 degrees!!!
Many people waste money trying to fix a problem that isn't there. :smash:
Race Director
Joined: Sep 1999
Posts: 11,360
Likes: 382
From: Plano TX
Re: Temperature update (page62)
Yeah, up to 230 is probably ok. Personally I don't like seeing temps that high, but it should hurt anything. On mine I use spal electric fans (no mechanical), dex-cool, edelbrock w-pump, be-cool rad and a 78 overflow tank (no air in system as with stock expansion tank). Temp in traffic on a 100F day with AC on slowly goes to 200 where the second fan kicks in and then drops like a rock back to 180. Fans never come on on the freeway.
If it runs hot on the freeway check the radiator seals and chin spoiler.
If it runs hot on the freeway check the radiator seals and chin spoiler.
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
Re: Temperature update (hauk)
If my memory servers me right you tried the water wetter, did that help at all?
Also you are running the mech. fan right, if so did you check to make sure it's all sealed around the shroud?
[Modified by Tominator, 10:16 AM 5/19/2003]
Also you are running the mech. fan right, if so did you check to make sure it's all sealed around the shroud?
[Modified by Tominator, 10:16 AM 5/19/2003]
Thread Starter
Instructor
Joined: Feb 2003
Posts: 176
Likes: 0
From: jacksonville florida
Re: Temperature update (Tominator)
I tried the flex fan and the car ran 10 degrees hotter than with the clutch fan so I put the clutch fan back in,I am using water wetter with only 10 percent coolant, the shroud is sealed very well,I'm not unhappy with the temps. but it's hard for me to realize that these cars run that hot,(remember i'm 70 years old and the cars I remember did'nt run that hot). :eek:
[Modified by hauk, 1:17 PM 5/19/2003]
[Modified by hauk, 1:17 PM 5/19/2003]
Melting Slicks
Joined: Dec 2000
Posts: 3,407
Likes: 2
From: Carmichael CA
Re: Temperature update (hauk)
Have you tried running in traffic with A/C on with no T-stat at all? You may be very surprised to see the temp hover just below 200 like I see mine all the time. I'm getting my A/C serviced and will be using it in the 100+ temps of Northern CA this year. I'll probably do a video like I did last year in the 80 degree Western Washington area where I got on the freeway and did several WOTs from 60 to 100 and then cruised with the A/C on, but never saw the temp go over 200. I think the most I've ever seen is 210, but when I checked the engine it was running fine and the coolant wasn't boiling or steaming or anything like that. This year in CA I figure if I don't do any WOTs in the 100+ weather then I'll still be fine with the A/C on all the time.
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Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Re: Temperature update (hauk)
are you sure that fan clutch is good? I just replaced mine. Actually Van Steel told me to replace it a long time ago, but I procrastinated.
I double checked my old one by getting the engine temp up to 220. I let the car idle in the driveway for a bit so I know the fanclutch got hot. I turned off the motor and felt VERY little resistance when I spun the fan by hand. I had tried it before when the car was cold, but it is difficult to tell because that is when there is going to be the least resistance.
When I sit at a light with the A/C on, the temp creeps up to about 195, then drops back to about 170-180 when I start moving again. That fan clutch sure is loud, but I guess now I can tell when it is working. :D
I double checked my old one by getting the engine temp up to 220. I let the car idle in the driveway for a bit so I know the fanclutch got hot. I turned off the motor and felt VERY little resistance when I spun the fan by hand. I had tried it before when the car was cold, but it is difficult to tell because that is when there is going to be the least resistance.
When I sit at a light with the A/C on, the temp creeps up to about 195, then drops back to about 170-180 when I start moving again. That fan clutch sure is loud, but I guess now I can tell when it is working. :D
Thread Starter
Instructor
Joined: Feb 2003
Posts: 176
Likes: 0
From: jacksonville florida
Re: Temperature update (isosceles)
How does the fan clutch work? I thought that the air passing through the radiator at speeds around 40 MPH and up caused the clutch to loosen and not turn the blades except for the windmilling,How far off am I?( Be gentle with the old guy) :confused: :confused: :confused:
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
Re: Temperature update (hauk)
Might be time to get a new radiator so you can drive with the AC on. If your car has a manual transmission some of the generic radiators aren't to baddly priced.
If you have the extra coin I would buy from DeWitt and also get the electric fans with it.
If you have the extra coin I would buy from DeWitt and also get the electric fans with it.
Melting Slicks
Joined: Jul 2002
Posts: 3,128
Likes: 3
From: Deltona (son of Deland and DAYTONA) FL
Re: Temperature update (hauk)
I think the fan clutch operation is pretty much a thermal thing. When I sit in traffic and the temp climbs to say 190 then get up to say 60mph, I'll hear the fan roaring until I see that temperature come back down to about 170, even as I travel at 60 mph. It doesn't take long though.
Double check it by getting the motor good and hot, then turn it off and rotate the fan by hand. You should feel a LOT of resistance.
[Modified by isosceles, 11:34 AM 5/20/2003]
[Modified by isosceles, 11:35 AM 5/20/2003]
Double check it by getting the motor good and hot, then turn it off and rotate the fan by hand. You should feel a LOT of resistance.
[Modified by isosceles, 11:34 AM 5/20/2003]
[Modified by isosceles, 11:35 AM 5/20/2003]