will this produce higher temps?

[samvdb89]

I put in higher compression pistons, 9:1
rebuilt my turbo
may have a slight leak at the oil pan.
I'm going to replace the thermostat today and see if that helps,
but would having the 9:1 pistons produce more heat?
I'm about 220 F at the thermostat housing after 10-15 min of driving
And about 120 F at the top of the radiator..
Sometimes i get boiling coolant after a drive, or steam,
the coolant in my over flow is boiling.
and the other day driving home my turbo quit working
i'd put my foot on the gas and get about 3 psi (guesstimating of the stock guage)
Just rebuilt the motor and it has 100 miles on it


I got some radiator flush and some new coolant, thought i might remove the radiator and fans and clean them really well along with the SMIC.
Also, I'm replacing the alternator if that has any effect on anything.. blew up a battery the other day, and the bearings in the alternator were shot..

 

[cookmeup272]

Are you using 50-50 mix? Stock boost gauge doesnt mean anything. Get a legit one. Are both of your radiator hoses warm? Or is the bottom one cool? Also since your draining the coolant anyways, test to make sure your t-stat is opening up by putting it in hot water

 

[samvdb89]

oh ya there's one thing i forgot, during my drive after a while my heater in the car will go cold, but when i let it cool down for a couple hours it drives fine, and the heater comes back warm, but i havent driven it since the turbo quit..

and thanks i'll check that, i'm trying to get a hold of a fail safe thermostat, but theyre out up here..

 

[1992_Talon_tsi]

oh ya there's one thing i forgot, during my drive after a while my heater in the car will go cold, but when i let it cool down for a couple hours it drives fine, and the heater comes back warm, but i havent driven it since the turbo quit..

and thanks i'll check that, i'm trying to get a hold of a fail safe thermostat, but theyre out up here..

As for the turbo, have you check the waste gate actuator if its damage or off? Also check the factory gauge vac line for leaks or rotten part and if your bov its opening or not?

 

[GVR4592]

Before you drive the car again you should probably do a compression test. It sounds like you overheated the engine pretty bad. It does sound like thermostat is not opening from your description.

 

[EclipticalGS]

couls be a bad or plugged heater core. Boilng coolant in the overflow is a sign.