cooling issues..., fine when driving, spikes when stopped. Options

[malaga_red75]

subaru JDM EJ25 DOHC

So, got my conversion finally road worthy and have noticed that while I am driving around, the car stays at around 200 F. when i stop, or let it idle in my garage... the temp slowly climbs and doesnt stop (i shut it off around 230 F). I am assuming this is an issue with my fans.

I am running a front mounted radiator, using 2 push-style fans. A few things that i think may be wrong...

-There is no shroud around the fans... just the shroud that seals the radiator to the front (since they are push fans, they are mounted on the front side of the radiator, in between the radiator and the nose of the car)

- there is about a 1 1/2" gap between the fans and the radiator (this was just the way that ended up working for mounting the fans)

anyways, i am pretty sure that the cooling system is working (no kinked lines, thermostat working, fans do turn on) as indicated by driving and the temp staying cool, there is just something not working when i stop moving. let me know what you guys think.

-Peter

[Mike Bellis]

I use a vacuum pump from harbor freight $70 and an air tank $35 that is converted for use as a vessel. Any velles will work so long as it keeps water out of the pump and does not cruch under vacuum. On my V8, I have a high point petcock in the front of the car. I have an expansion tank in the rear. If you do not have a high prtcock, try this...

You will need a clamp, visegrips will work. Fill the system with water and water wetter. once full, seal the system and pull a vacuum. At your expansion tank, use the vacuum to pull on the overflow tube. Use clear tubing to the vacuum pump. If the system is sealed, you should get very little water in your tube. Pull vacuum for a few minutes and clamp the overflow tube. Get a gallon of water ready and put the overflow tube into it. Un-clamp the tube, water should be drawn into the system. repeat the vacuum process and water fill process. after this is done several times you will get the air out. This will work even if the front is totaly sealed. Air will be drawn to the vacuum.