SR20DET heating when i pass the 7psi - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

initial240sx · 11-06-2010, 09:01 PM

hi guys, need help...

SPECS:
-SR20DET Redtop
-Mishimoto Radiator
-OEM FAN, but is direct way..not controlled with fan sensor
-T25
-greddy profec type-s

i sent my 240sx to the mechanic, to install the boost controller, he tells me that, when he pass the 7psi to 9-10psi...in seconds the temperature reach 3/4... but if you keep the 7psi...the temperature stay normal...he check the radiator, thermostat, coolant and its OK. I ask him if the head gasket was ok and it does.

so what i can do?

KiLLeR2001 · 11-06-2010, 11:35 PM

Running lean perhaps?

steve shadows · 11-07-2010, 05:53 PM

I would check out your coolant temp sensor arrangement first make sure they are in good shape don't have a bunch of corrosion or crap on them and also make sure the grounds are good. Have the guy do a leak down or compression test if it;s free or you should run one just to be sure. Also do you have thermostat in? Make sure you have nismo thermo or at least a stock one.

initial240sx · 11-08-2010, 08:07 AM

Quote:

Originally Posted by steve shadows

I would check out your coolant temp sensor arrangement first make sure they are in good shape don't have a bunch of corrosion or crap on them and also make sure the grounds are good. Have the guy do a leak down or compression test if it;s free or you should run one just to be sure. Also do you have thermostat in? Make sure you have nismo thermo or at least a stock one.

yes i have the oem thermostat.. but i'm going to buy the nismo thermo, aftermarket headgasket and ARP headstuds... to see what happen...

initial240sx · 11-08-2010, 11:10 AM

also, a friend told me, that i may have problems with the fuel pump, because in 7psi the engine work properly, but + boost = + fuel, so thats way the engine overheat... is this true?

josephin510 · 11-08-2010, 11:16 AM

Running lean.

initial240sx · 11-08-2010, 11:24 AM

Quote:

Originally Posted by josephin510

Running lean.

sorry, in past post i didn't understand the meaning of running lean, but i google it now... thanks

11-06-2010, 09:01 PM	#1
initial240sx Leaky Injector Join Date: Oct 2008 Location: Doral, Fl Age: 31 Posts: 81 Trader Rating: (0) Feedback Score: 0 reviews	SR20DET heating when i pass the 7psi hi guys, need help... SPECS: -SR20DET Redtop -Mishimoto Radiator -OEM FAN, but is direct way..not controlled with fan sensor -T25 -greddy profec type-s i sent my 240sx to the mechanic, to install the boost controller, he tells me that, when he pass the 7psi to 9-10psi...in seconds the temperature reach 3/4... but if you keep the 7psi...the temperature stay normal...he check the radiator, thermostat, coolant and its OK. I ask him if the head gasket was ok and it does. so what i can do?

11-06-2010, 11:35 PM	#2
KiLLeR2001 Post Whore! Join Date: Jun 2007 Location: オーランドフロリダ Posts: 7,955 Trader Rating: (46) Feedback Score: 46 reviews	Running lean perhaps? __________________

11-07-2010, 05:53 PM	#3
steve shadows Post Whore! Join Date: Aug 2003 Location: LA and OC Posts: 8,202 Trader Rating: (5) Feedback Score: 5 reviews	I would check out your coolant temp sensor arrangement first make sure they are in good shape don't have a bunch of corrosion or crap on them and also make sure the grounds are good. Have the guy do a leak down or compression test if it;s free or you should run one just to be sure. Also do you have thermostat in? Make sure you have nismo thermo or at least a stock one. __________________ Like Me on FaceBook !

11-08-2010, 11:16 AM	#6
josephin510 Zilvia Junkie Join Date: Mar 2009 Location: richmond Age: 32 Posts: 504 Trader Rating: (0) Feedback Score: 0 reviews	Running lean. __________________ Trade my Rb25 for some wheels. Buy my Sc300.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-08-2010, 11:10 AM	#5
initial240sx Leaky Injector Join Date: Oct 2008 Location: Doral, Fl Age: 31 Posts: 81 Trader Rating: (0) Feedback Score: 0 reviews	also, a friend told me, that i may have problems with the fuel pump, because in 7psi the engine work properly, but + boost = + fuel, so thats way the engine overheat... is this true?