So, just the other night, my 86 gxl with a 13bt swap started to overheat. i pulled over, checked all my hoses, no leaks. No coolant loss whatsoever. Then, I removed the thermostat. Seemed to help, but still was overheating by the time i got it home. Once I was home I flushed the coolant system, car is still overheating.
What do I do next?

 

fan? are you using the shroud and undertray? radiator been flushed ever?

 

you could also be running lean. How's your boost doing?

I had some major overheating issues and they turned out to be the thermostat. It should be pointed out that running no thermostat will actually make your engine hotter than running a properly sized one or a well designed hole.

 

I replaced the thermostat and it still overheats
I tried adjusting the idle screw, but it seemed to make no difference
I flushed both the radiator and the entire coolant system, first thing.
I think im going to pick up a new radiator, maybe theres a blockage somewhere

 

you might have a clogged radiator or something else is clogged in your cooling system. are you still using the stock rad?

 

You need to answer the above questions first...

What FAN do you run... DO YOU HAVE AN UNDERTRAY....

 

Take a look at this and see if you can find anything.

http://howto.globalvicinity.com/gv_w...=192&co=1&vi=1