overheating 1982 GTV6

[91spiderNV]

Good to see that the radiator cap fix worked. In warmer desert like conditions, it may also help to put in a pint of Red Lines' water wetter. Lowers the operating temp about 10-15degrees F. Great for track days when the outside temp is very hot, and older cars.

[alfettish]

Yes I should do something to cool it down. Now that Summer has come here, it's operating about 10 degrees C hotter. Thanks,.

[alfacolombian]

hello , well i been trying to fix a problem of overheting on my 83 gtv6, i did replace the t -stat,the water pump ,thermal switch,got 2 -10"electrical fans rotating to the right way, fans switch is working ok , got new head gaskets , no air on the cooling sistem,new radiator cap, new hoses, BUT this car overheats to much the gauge almost gets to 3 quaters of the marks and when i turn the engine off overflows the coolant, SO I NEED HELP PLEASE because i want to drive this baby back. thank very much for reding my post.

[steveh29]

Seems to me the only thing you've left out of your overheating search is the radiator. Are you sure it's not clogged up with scale or other junk. I've had more than one radiator look perfectly good to the eye but inside there was enough junk to prevent good water flow or heat transfer. I typically run only aluminum heavy duty radiators that seem to transfer the heat better.

[alfacolombian]

i am thinking in getting one from international , little expensive but i guess thats the only place that have that kink of radiators, what do you think?

[steveh29]

You could always get a quote from these guys. I've had them build some radiators before and they do excellent work. There's a template you can use which makes it pretty easy. I believe I spent $400 on the last one I had made (for a 60's Thunderbird).

Griffin Radiators™

Living in SoCal you should be able to find a good radiator shop to inspect your radiator and make sure it's bad or crudded up before throwing money at the problem. I used to go to a place in Reseda that did great work but the name escapes me.

You should also check things like making sure you have some sort of fan shroud to duct air through the radiator. Not running a fan shroud will cause overheating in traffic.

If you go the international route, I would check their electric fan prices against somebody like summitracing.com. They're just your typical aftermarket electric fans and many places stock them.

[alfacolombian]

ok thanks for the advice steveh , i am going to tried to go to a local shop today and see what the guy say about making one for me. know let me ask something else , let say that i get a radiator made up and all that, what if my gtv6 keeps overheating? i don't have a radiator yet but i want to be a little ahead of this problem just in case this happens. whats the next step.

[steveh29]

Looks like you've replaces just about every component of the cooling system. When does it overheat? Does it only overheat in traffic and then cool down on the open road? Or does it overheat no matter what you are doing?

If it's only overheating in traffic or during city driving, I'm inclined to think that not enough air is being pulled through the radiator (no shrouds, fans not moving enough air) or the radiator is crudded up and the radiator can't transfer heat effectively.

If it cools down quickly when you get out of traffic and on the road, then I'm even more leaning towards an air movement problem.

Outside of the cooling system, having the engine running too lean or the timing off can cause overheating - but my problems have always been radiator/fan/shroud related.

[alfacolombian]

thanks so much for giving ideas, i'm going to check this car on the weekend and i let you know what happen. also i found a guy over san pedro that he is going to work on the radiator, is going to be aluminum and price about $525 , but i have to build some brakets to install the fans. do you think is a decent price?

[steveh29]

For me personally that doesn't seem like a bad price for a custom made aluminum radiator - but ask my wife and you'll get a different answer!

If you have an older radiator that you believe is suspect, then I think you'll make some progress with a replacement. I'll also stress again to make sure you have good airflow through the radiator. Without it, you'll have trouble in SoCal traffic.

Really hope this works out for you. I know how maddening and frustrating a cooling problem can be. I've been there many times.

[alfacolombian]

hey steveh29 i have the new radiator installed already and it looks that the problem is solve , i going to test it on tuesday on the 405 freeway like around 5pm and i'll see what happens. but thanks for all your help.

[Venci]

I was having a problem with overheating with my Alfa 90 2.5 V6 and after changing almost everything the radiator was the solution of my problem. You can easy understand if the radiator is clogged by measuring the temperature of the radiator with digital thermometer. My old radiator was colder in the bottom where is the fan switch and fan was starting too late.

[steveh29]

Quote:

Originally Posted by alfacolombian hey steveh29 i have the new radiator installed already and it looks that the problem is solve , i going to test it on tuesday on the 405 freeway like around 5pm and i'll see what happens. but thanks for all your help.

[Alfacliff]

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