i know there is like a million overheating threads and i've been through them all!!!! - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

hulkster_s13 · 02-07-2011, 09:32 PM

So I think I got it. I think it was airlocked. So today I took out my thermo and drilled 2 3/16 holes, one on each side of the jiggle valve and I also cut the jiggle valve off. Ran the car for about 20-30 min. No overheating. Also the thermo did open, idle temp got up to 184f then dropped to around 160f. I'll report back tomorrow after I go on a test run to see if it overhears. But I'm pretty confident that the airlock was the problem. With the 2 holes in the thermo allowed enough fluid in to push all the air out. Air bubbles came out fast in the lines of the swirl pot.

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02-07-2011, 09:32 PM	#31
hulkster_s13 Zilvia Member Join Date: Nov 2005 Location: down by da beach Posts: 276 Trader Rating: (9) Feedback Score: 9 reviews	So I think I got it. I think it was airlocked. So today I took out my thermo and drilled 2 3/16 holes, one on each side of the jiggle valve and I also cut the jiggle valve off. Ran the car for about 20-30 min. No overheating. Also the thermo did open, idle temp got up to 184f then dropped to around 160f. I'll report back tomorrow after I go on a test run to see if it overhears. But I'm pretty confident that the airlock was the problem. With the 2 holes in the thermo allowed enough fluid in to push all the air out. Air bubbles came out fast in the lines of the swirl pot.