running hot
Freshman User
Joined: Apr 2001
Posts: 49
Likes: 0
running hot
Ok lets start off with the basics I know everyone is going to ask.
1. Yes the head gaskets are on correct.
2. Yes the thermostat was in the right way, plus we took it out.
3. Yes I have a brand new 4 core radiator.
4. Yes I have a new aluminum water pump.
5. Yes I have a brand new 3000cfm electric fan surrounded by a fan shroud. It is sucking into the engine bay.
6. Yes I have a 13 pound radiator cap.
Ok this is what is happening. We start it up, keeping it at 2500rpm while it is sitting still. After about 5 minutes, the gauge is showing 210.
Does anyone have any suggestions?
78 F150 400m, c6, holley carb and intake, cam, and some other goodies
87 F150 460, c6, 2800 stall converter, eagle hbeam's, eldelbrock intake carb, crane cam sat spec., balanced and blue printed, 10.5-1 compression, heads ported and polished, full msd setup, everything but roller, aluminum heads, and laughing gas(as for now).
55 F100 stock 292 3 speed (as of right now..heh)
97 Exped stock
1. Yes the head gaskets are on correct.
2. Yes the thermostat was in the right way, plus we took it out.
3. Yes I have a brand new 4 core radiator.
4. Yes I have a new aluminum water pump.
5. Yes I have a brand new 3000cfm electric fan surrounded by a fan shroud. It is sucking into the engine bay.
6. Yes I have a 13 pound radiator cap.
Ok this is what is happening. We start it up, keeping it at 2500rpm while it is sitting still. After about 5 minutes, the gauge is showing 210.
Does anyone have any suggestions?
78 F150 400m, c6, holley carb and intake, cam, and some other goodies
87 F150 460, c6, 2800 stall converter, eagle hbeam's, eldelbrock intake carb, crane cam sat spec., balanced and blue printed, 10.5-1 compression, heads ported and polished, full msd setup, everything but roller, aluminum heads, and laughing gas(as for now).
55 F100 stock 292 3 speed (as of right now..heh)
97 Exped stock
Senior User
Joined: Jun 2001
Posts: 480
Likes: 0
From: Alabama
running hot
210 is in the normal range. What thermostat do you have?
I don't think the electric fan is going to pull enough air though. Check back on another post, I beleive someone else had the same problem as you have, ended up taking a new clutch fan to fix. He tried elec. fans too.
chris
79 F-150 Ranger Lariat, 2wd, RC, LB, 460 (intake, headers, cam), C-6(shift kit).
79 mustang (work in progress...its just slow progress)
98 Chevy 4x4 (work truck)
95 Lexus SC300 (wife's baby)
I don't think the electric fan is going to pull enough air though. Check back on another post, I beleive someone else had the same problem as you have, ended up taking a new clutch fan to fix. He tried elec. fans too.
chris
79 F-150 Ranger Lariat, 2wd, RC, LB, 460 (intake, headers, cam), C-6(shift kit).
79 mustang (work in progress...its just slow progress)
98 Chevy 4x4 (work truck)
95 Lexus SC300 (wife's baby)
Freshman User
Joined: Apr 2001
Posts: 49
Likes: 0
running hot
I backed the timing down some and that helped. I read about the clutch fan. How much cfm do those pull? I always thought the electric fans(3000cfm plus)pulled more. Ill see what it does today and get back on what it is running at.
Mountain Pass
Joined: Jan 2001
Posts: 229
Likes: 0
running hot
Im pretty sure you should be alright with the electric fan... 3k CFM is a heap of air..
I'd still say go with a thermostatic clutch fan or a flexfan.. namely because at a higher rpm it will pull more air. The electric will pull the same amount of air at any given engine rpm, where as the clutch and flex fans (when the clutch fan is engaged)will pull more air as the rpms increase.
Yes, timing would have a lot to do with it.. what kind of timing figures are you running?
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
460/C6 transplant @ 389hp/491 lb.ft.
14.29@103.8, 13-14 mpg heheheheheh
I'd still say go with a thermostatic clutch fan or a flexfan.. namely because at a higher rpm it will pull more air. The electric will pull the same amount of air at any given engine rpm, where as the clutch and flex fans (when the clutch fan is engaged)will pull more air as the rpms increase.
Yes, timing would have a lot to do with it.. what kind of timing figures are you running?
J/.c
1965 Ford Galaxie 500 (okay, so not quite a truck)
460/C6 transplant @ 389hp/491 lb.ft.
14.29@103.8, 13-14 mpg heheheheheh
Freshman User
Joined: Jun 2001
Posts: 26
Likes: 0
running hot
I did have this problem myself. It's posted in another thread. The electric fans where not enough, I had two of them pulling 3000 cfm and still got hot. My fix was to go back to the factory Clutch fan system. Truck stays around 185 now.
Postmaster
Joined: Aug 2001
Posts: 2,882
Likes: 0
From: Nevada
running hot
Most aftermarket fans are considered helpers rather than a primary cooling fan for everyday driving. If you want to go all electric, search the bone yards for an OEM cooling fan designed to carry the entire cooling process. Listen to one on a
running motor and you can hear the difference; kind of like a 747 compared to a Piper Cub. Most are also two speed.
running motor and you can hear the difference; kind of like a 747 compared to a Piper Cub. Most are also two speed.
