Hey guys I have a Turbo B16A. My setup is,

T04E/60 Trim
SRP JE Turbo Pistons
New Copper OEM Headgasket
Walbro 255lph Fuel Pump
AEM Fuel Rail w/stock injectors for now I have 750cc P/H RCI injectors for when I get it tuned.
Blox 65mm Throttle Body
AEBS Intake Manifold
Custom Made 2.5" Aluminum Radiator w/always on Electric Fan
Heatshield around turbo and manifold
ARP Headstuds
FMIC
New aftermarket Stant Thermostat
Water Wetter coolant additive
Adjustable FPR
Hood is spaced up 1.5" in the rear

Car is untuned but it's definitely on the richer side. I don't think it's running lean. I have about 110 miles on the engine so far. The engine tends to overheat more during night time and in the early morning when the air is colder. During the hot days it runs fine because it's easier to stay out of boost. But at night the turbo spools up really easy and the coolant levels go past half way sometimes pretty high. I shut the car off when ever it gets too hot at night. I never have problems during the day. I tried all the cooling tricks that I can think of. I have a hondata S200 and the bigger injectors but I need to find a tuner. My guess is the car just needs a good tune but I'm not sure. I don't think it should overheat like this. Could it be that it's running too lean? If there's any turbo B16 guys out there that have had the same problems let me know if you have a solution. Thanks!

 

ur not boosting right now r u? cause w/o it being tuned u could just mess shyt up bad.....get it tuned.....if its still doin it maybe its the thermostat ....that was my prob...it stuck closed so i just took it out for now

 

That's what I figured. I need to finda shop that has time to tune the beast. Every shop around me is booked. I changed the thermostat with a brand new Stant one last week. Hmmm any other ideas? Besides an obvious tune?

 

Try checking your intake manifold gasket. i had a problem when i built boost, my car would over heat and it was due to blowing boost into the water cooling line on the manifold ( on the gasket, the orange rubber ring.) went bad. wouldnt hurt to look?

 

I had a sticky stat in my b16a. how big is your Fmic is it blocking your radiator ?, honestly dude i bet it's a lack of being tuned... You said it only happens at night when trhe turbo spools which is a BIG mistake if your notr tuned. Think about what happens when your boost a car the engine get hot well with out you being tuned and with your timeing not being retarded at all thats probually your problem. You said you didn't think you were running lean do you have a wideband ? if so what are the AFR? Your on stock injectors they dont dump that much fuel in there.

 

what do you mean by untuned?

could be it. or could be the sideways radiator/lack of airflow.