Temp too high
Thread Starter
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
Temp too high
Hello, I have a 1985 Corvette with a Miniram, Flat Tappet ZZ409 cam, AFR 195 Heads, Hedman Long Tube 1 5/8" headers, 58mm Throttle body, 3.75s, Dynomax true dual exhaust, and a bunch of other miscellaneous modifications.
In my tune my cooling fan is set to come on at 92* C, which is about 198* F. Before I installed the AFR 195 heads, the temp used to go to 206* F, and start dropping down. Now it goes to 225* F and starts dropping down. But the fans are still coming on at 198*F.
Does anybody have any idea of whats going on?
Thanks!
In my tune my cooling fan is set to come on at 92* C, which is about 198* F. Before I installed the AFR 195 heads, the temp used to go to 206* F, and start dropping down. Now it goes to 225* F and starts dropping down. But the fans are still coming on at 198*F.
Does anybody have any idea of whats going on?
Thanks!
Melting Slicks
Joined: May 2010
Posts: 2,082
Likes: 3
From: Conowingo Maryland
fans do not control your temp stats do. What stat are you running. if you are sitting there ideling it takes awhile for the fans to pull enough air across the rad to cool the cooleant to bring the temps back down
Le Mans Master
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
I had a similar situation on an engine I rebuilt increasing the power some. It was more power and more heat was generated (my assumption). I ended up installing a larger radiator which helped control the temperature.
I'm sure there can be several other situations and answers.
Any chance the radiator needs a flush.
I'm sure there can be several other situations and answers.
Any chance the radiator needs a flush.
Thread Starter
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
I had a similar situation on an engine I rebuilt increasing the power some. It was more power and more heat was generated (my assumption). I ended up installing a larger radiator which helped control the temperature.
I'm sure there can be several other situations and answers.
Any chance the radiator needs a flush.
I'm sure there can be several other situations and answers.
Any chance the radiator needs a flush.
Thread Starter
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
I think it may be due to the aluminum heads pushing out the heat faster and the heat being absorbed by the coolant faster than the old iron heads... Unless there is a problem with the thermostat?
It's a 195* stat I believe, it's a factory replacement.
It's a 195* stat I believe, it's a factory replacement.
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