I've been having overheating problems on the track only. Normal driving is fine. I've been planning to test whether I will need a new thermostat or not. I was told to boil it and see if it opens.

Do I boil it in water or coolant?

I don't want to have to buy another one since I just bought one and want to know if that is truly the problem.

Anyone know the exact temp an OEM b-series thermostat opens at?

 

Would like to know as well.

Not having any problems but this seems like good reference.

 

boil it in water

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all stock &raquo;</TD></TR><TR><TD CLASS="quote">I've been having overheating problems on the track only. Normal driving is fine. I've been planning to test whether I will need a new thermostat or not. I was told to boil it and see if it opens.

Do I boil it in water or coolant?

I don't want to have to buy another one since I just bought one and want to know if that is truly the problem.

Anyone know the exact temp an OEM b-series thermostat opens at?</TD></TR></TABLE>

yeah boil it, but you can check by holding the lower radiator hose. Make sure that it changes temp, from when it opens and closes

 

check the lower hose. but to see it visualy work, take it out, put it in boiling water. the thermostat uses a rubber that reacts to heat. obviously causing it to open to heat, closing back up when its cool. if its in boiling water and fully open, pull it out, stick a piece of paper or a pen between the gap, keep it out...as it gets cool, you will see it clamp onto the object. throw it back in the boiling water and it will release it

 

I don't think you can boil coolant... but yeah, use a thermometer and water and boil it in a pan... make sure it isn't opening to soon

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by all stock &raquo;</TD></TR><TR><TD CLASS="quote">I've been having overheating problems on the track only. Normal driving is fine. I've been planning to test whether I will need a new thermostat or not. I was told to boil it and see if it opens.
</TD></TR></TABLE>

I find it interesting that it only overheats while on the track and not during regular driving. What are you using for coolant? just water or a water and antifreeze mix? if so what ratio is it mixed at?

 

Here's a quick test on how to check your thermostat:
When the car is COLD, been resting for over 3 hours, take the radiator cap off.
Now turn the car on and let it idle... Don't worry about the coolant spilling, omitting the cap doesnt apply pressure and vacuum on the cooling system thus no spillage. If you have your collant topped off to a level where you can actually see it in the filler neck, THE LEVEL WILL DROP when the thermostat OPENS! But then it won't drop until you reach the minimum operating temperature in which the thermostat would open. You'll also feel temperature changes on the radiator hoses and see steam come out of the filler neck once the thermostat opens. Look straight down at the filler neck making sure that you;re nowhere near it (to avoid gettin splashed at) and just get a nice view of the coolant. Once you;ve confirmed that the coolant level drops, at least you know that your thermostat isn't stuck open.