So I think I have my issues sorted out. I have been battling overheating issues now that I removed the heater. I studied the flow charts etc, and look at the spare heads I have, and if you delete the bypass across the front of the motor and the heater, the t-stat never gets hot water across it to open. I tried everything from spill free funnel to, having the system pressurized and back filled. Still over heated no mater what and stat would not open.

So here is the solution.





4an to supply hot water from the radiator, to t-stat. I also modified the Nismo stat by removing the tiny plunger to help relieve any air that would want to get trapped.

 

good work!

why a 4an though?

 

To be honest the reason I choose 4, was they had the fittings in stock at the local speed shop.

 

A few pics with the fitting welded on.

 

makes sense. I didn't know if there was a flow reason or whatever. I guess it probably wouldn't make much difference.

Now use your spill free and fill your system as slow as possible and no air should ever get trapped in that tstat. Awsome!

 

Ya I honestly do not think flow will be an issue, as long as some hot water can get behind the the stat, it will work. The rest of the fittings should be here Tuesday or Wednesday, so we will know soon. I am going to vac fill the cooling system for zero chance of any air.

 

Some updates line is made and installed. Bleeding it as we speak.

 

Nice

 

did you keep the crossover tube from the front of both coolant pipes? i removed the heater core but kept the crossover tube on my track car, as ive been told and read about motors cavitating when both are removed. any reason behind removing the heater core?

when i removed the heater core, i just rerouted the heater core hoses to eachother instead of inside the car

 

No the cross over tube on the front of the motor has been gone for about 1.5 years. Heater was just recently deleted with this round of clean up.

 

Good job man on finding the solution to the problem.

 

looks good

so i take it this is purely a track car or do you live in a hot climate where you don't need heat?

 

south florida doesnt need the heat much.

 

Ya most of the time its so unbearable hot, I can not tell you the last time I used the heat.

 

ah, i see

 

was in florida this past february, 50 in the day, 40 at night.

your making me miss my g sedan lol, now i just got this dumb evo *kicks ground*

 

ya this winter was a fluke coldest recored in l like 10 years

 

any hwy driving, testing to verify all is well???


-J

 

tomorrow i am off work so i ill verify