Does this need replacing??
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Member
Joined: Jul 2009
Posts: 156
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From: Greenville, NC
Car: 1985 Z
Engine: 89 305 TPI
Transmission: 700-R4
Axle/Gears: OSD 10 bolt/ 3.42
Does this need replacing??
This is what the inside of my radiator looked like when i was flushing it out.
I believe it is original with the car.
So based on how this looks, should it be replaced?
Also, if i replace it, i would want to get a new water pump and thermastat.
What is an ideal thermastat...160, 180, ect...
Also, if i replace it, should i go with an electric water pump, or stick with mechanical
-Thanks
I believe it is original with the car.
So based on how this looks, should it be replaced?
Also, if i replace it, i would want to get a new water pump and thermastat.
What is an ideal thermastat...160, 180, ect...
Also, if i replace it, should i go with an electric water pump, or stick with mechanical
-Thanks
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iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Does this need replacing??
are you having cooling problems? if you have an infrared thermometer you can check your radiator for cold spots.
Thread Starter
Member
Joined: Jul 2009
Posts: 156
Likes: 0
From: Greenville, NC
Car: 1985 Z
Engine: 89 305 TPI
Transmission: 700-R4
Axle/Gears: OSD 10 bolt/ 3.42
Re: Does this need replacing??
I dont have an infrared thermometer
Supreme Member
iTrader: (2)
Joined: Jul 2009
Posts: 1,354
Likes: 4
From: morrow, ga
Car: 82 S10, 83 280ZX, 84 Z28
Engine: 355 smallblocks..na, 2.8 turbo
Transmission: 85:th350, 84:700R4
Axle/Gears: 85:ford9 4.85, 84:stock 3.24
Re: Does this need replacing??
if your engine is overheating here is what to do. First make sure the coolant system is full and no more antifreeze than 50%(ethylene glycol) you will need an infrared thermometer (about$90) or borrow one. get the engine up to operating temp. if the car has a 190 degree thermostat the engine needs to be at least 190 degrees. if you have removed the thermostat replace it. get a good quality one. now that the engine is hot turn it off and take the infrared thermometer and scan the entire cooling system from the thermostat housing to the water pump inlet. the thermostat housing and upper radiator hose should be at least 190. if not here is no coolant circulating. check the water pump and thermostat. scan the radiator core at all 4 corners and center. look for a temp drop of 15 degrees or more. if the radiator doesn't have have a consistent temperature replace it. if everything else checks ok it is likely an airflow problem. make sure the radiator is getting fresh air and the fan(s) is working
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