Issues with 77, more questions.
05-10-2016, 08:48 PM
#1
Racer
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Issues with 77, more questions.
Been a rough going lately. Ignition module took a dump, then alternator. Been spending alot of time on this forum. Anyway, I have champion radiator, with a recently installed flex a lite fan pushing 3000 cfm. Engine is idling and running about 200-210 degrees per the brand new autometer gauge that kicked my *** during the install. Would love to get the temps down. I noticed that I have no expansion tank/ recovery tank. I know they changed in my year model(77). If I hook one of these up, would it cool Me down a bit, and I have a aftermarket aluminum champion radiator with a welded nipple right below the cap. This is where the tank would hook up too right?
Sorry for the all the post guys, car is not being good to me this summer
Sorry for the all the post guys, car is not being good to me this summer
05-11-2016, 12:56 AM
#2
Melting Slicks
Yes that nipple is where you would attach the surge tank. It's a good Idea to have it installed, as the engine always is puking a little coolant out after shutting a hot engine down, and sucking some back in as it cools....keeps the rad topped to the correct level with coolant.
Your fan is a mechanical fan??? How about the thermostat, you should have a 195 degree thermostat in there, and if your not sure, spend the $10 bucks and get a new one.
The lower airdam is really important to guide higher pressure air up into the front of the rad for proper cooling...make sure all the foam bits are there too.
Your fan is a mechanical fan??? How about the thermostat, you should have a 195 degree thermostat in there, and if your not sure, spend the $10 bucks and get a new one.
The lower airdam is really important to guide higher pressure air up into the front of the rad for proper cooling...make sure all the foam bits are there too.
05-11-2016, 01:15 AM
#3
Mike
I run a 180 T stat in my 75 & the GTO, also check your timing again this can cause high heat
Your fan needs to move a bunch of air
At idle can you feel the air movement from the fan in front of the engine & heads ? If not you are not moving enough air across the radiator coils.
I had trouble with this on the Pontiac clutch fan was bad
I run a 180 T stat in my 75 & the GTO, also check your timing again this can cause high heat
Your fan needs to move a bunch of air
At idle can you feel the air movement from the fan in front of the engine & heads ? If not you are not moving enough air across the radiator coils.
I had trouble with this on the Pontiac clutch fan was bad
05-11-2016, 02:41 PM
#4
Racer
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Mike
I run a 180 T stat in my 75 & the GTO, also check your timing again this can cause high heat
Your fan needs to move a bunch of air
At idle can you feel the air movement from the fan in front of the engine & heads ? If not you are not moving enough air across the radiator coils.
I had trouble with this on the Pontiac clutch fan was bad
I run a 180 T stat in my 75 & the GTO, also check your timing again this can cause high heat
Your fan needs to move a bunch of air
At idle can you feel the air movement from the fan in front of the engine & heads ? If not you are not moving enough air across the radiator coils.
I had trouble with this on the Pontiac clutch fan was bad
05-11-2016, 02:43 PM
#5
Racer
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Yes that nipple is where you would attach the surge tank. It's a good Idea to have it installed, as the engine always is puking a little coolant out after shutting a hot engine down, and sucking some back in as it cools....keeps the rad topped to the correct level with coolant.
Your fan is a mechanical fan??? How about the thermostat, you should have a 195 degree thermostat in there, and if your not sure, spend the $10 bucks and get a new one.
The lower airdam is really important to guide higher pressure air up into the front of the rad for proper cooling...make sure all the foam bits are there too.
Your fan is a mechanical fan??? How about the thermostat, you should have a 195 degree thermostat in there, and if your not sure, spend the $10 bucks and get a new one.
The lower airdam is really important to guide higher pressure air up into the front of the rad for proper cooling...make sure all the foam bits are there too.
05-11-2016, 05:07 PM
#6
Melting Slicks
The problem lies with the fact that the "fan doesn't cover the entire radiator."
You need to build a fan shroud that covers the entire radiator and then mount the cooling fan on that.
Kind of like this.....http://img.youtube.com/vi/ub04uaZMVf4/0.jpg
You need to build a fan shroud that covers the entire radiator and then mount the cooling fan on that.
Kind of like this.....http://img.youtube.com/vi/ub04uaZMVf4/0.jpg
05-11-2016, 05:17 PM
#7
Racer
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The problem lies with the fact that the "fan doesn't cover the entire radiator."
You need to build a fan shroud that covers the entire radiator and then mount the cooling fan on that.
Kind of like this.....http://img.youtube.com/vi/ub04uaZMVf4/0.jpg
You need to build a fan shroud that covers the entire radiator and then mount the cooling fan on that.
Kind of like this.....http://img.youtube.com/vi/ub04uaZMVf4/0.jpg
05-11-2016, 05:45 PM
#8
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St. Jude Donor '05
Pulls more air through it as a whole
Remember to put a number of rubber flaps ie vents in there so when youre at speed the air has somewhere to go or youll risk heating up at hwy speeds.
Google the fan man, give you some good ideas.
If you look at a lot of GM shrouds there are usually open spaces around it for that purpose
Remember to put a number of rubber flaps ie vents in there so when youre at speed the air has somewhere to go or youll risk heating up at hwy speeds.
Google the fan man, give you some good ideas.
If you look at a lot of GM shrouds there are usually open spaces around it for that purpose
05-11-2016, 05:52 PM
#9
Racer
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Pulls more air through it as a whole
Remember to put a number of rubber flaps ie vents in there so when youre at speed the air has somewhere to go or youll risk heating up at hwy speeds.
Google the fan man, give you some good ideas.
If you look at a lot of GM shrouds there are usually open spaces around it for that purpose
Remember to put a number of rubber flaps ie vents in there so when youre at speed the air has somewhere to go or youll risk heating up at hwy speeds.
Google the fan man, give you some good ideas.
If you look at a lot of GM shrouds there are usually open spaces around it for that purpose
05-11-2016, 06:56 PM
#10
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St. Jude Donor '05
The flaps stay shut at idle or lower speeds so you get the full effect of the shroud. When pressure builds up the flaps get forced open and release the air the fan cant pull in.
Those use 3 1/8 in holes and have rubber nubs you just push through the hole to stay put. Cut your holes a little smaller than the flap
Looks like Summit sells them now nothing on Fan Man site anymore. Giants win again...
4 should be plenty
http://www.summitracing.com/parts/sp...FQgaaQodBDQNrQ
Those use 3 1/8 in holes and have rubber nubs you just push through the hole to stay put. Cut your holes a little smaller than the flap
Looks like Summit sells them now nothing on Fan Man site anymore. Giants win again...
4 should be plenty
http://www.summitracing.com/parts/sp...FQgaaQodBDQNrQ
Last edited by cv67; 05-11-2016 at 07:02 PM.
