U check it hot, cold? Both?

 

I like the idea of the steel resivoir but wouldn't defeat the purpose of the epansion tank? The plastic will expand out some as pressure build from what I understand. Where would all that pressure go....

 

The plastic bottle does not expand, when the pressure in the bottle/cooling system reaches the cap psi rating, pressure/air is released via the cap.

The rad cap on the metal bottle does the same thing.......releases pressure when it's psi rating is reached.

 

Ok. Thanks for the clarification.

 

I had no problems with mine either. Pressure bottle was empty, filled it 3/4 of the way and let the vehicle warm up a bit and started driving. Whether it actually sucked any fluid in or not I dont know. Doesnt look like the fluid level changed much.

 

Burping is for babies, not Jeeps.

 

I did not get it to working temperature! It goes up and falls down half way then up again. I tried the 4th termostat. It is kind of sh...dont know what causes this temperature drop

 

What brand of thermostat?

 

It would take about 10 minutes to test t-stat(s) in a pan of water on top the stove using a cooking thermometer. A properly functioning stat will just barely start to open, only a sliver, at it's temp rating. It should open very slowly, very smoothly, as the water temp rises, until it reaches wide open, about 1/4", at about about 15* above the stat's temp rating.

A properly functioning stat in a normal operating environment DOES NOT go from closed to full open and back to closed over and over again. Once the stat begins to open, it "hovers" in an infinite number of open positions, depending on coolant temp. When driving conditions raise coolant temp to about 15* above the stat's rating, the stat will be at it's wide open position. Obviously when the stat is at wide open, it is doing absolutely nothing.....the rest of the cooling system, it's condition and driving conditions determine max coolant temp.

 

had the origimal one with 180 degree and a behr one from part store here in germany. and two motorad ones from rock auto.com

 

Did u possibly test one or all?

 

Well he needs a 195 degree one, like stock.

 

He needs to find his fluctuating temp problem.....regardless of stat temp rating, I doubt he has 4 bad stats.

 

I don't doubt it. Exactly the number of Stants I had that were bad.

 

Well there ya go, proof that Stant makes bad stats.....so bad that one is likely to get 4 bad ones in a row. LOL, just kidding. Guess I'm just lucky, never had a bad Stant in 50 years of farting around with cars/bikes.......(yet).