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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


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Old 04-15-2019, 10:40 AM   #1
Axel18
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Rb25 Neo, still overheating w/Drifting

This is ridiculous.... I need to open up and talk to more experienced builders...

I live in the Caribbean so we are a hot country but god damn how am i still heating up lol. After 2-3 runs im hitting 230-240 f.... cools off in 2-3 mins but still, i find this so baffling....

This is a typical run: https://www.instagram.com/p/BroA9JDDUz1/


Cooling setup:
Radiator: https://www.mishimoto.com/mishimotor...-radiator.html
Fan: Flex-a-lite 180 Black Magic X-treme i think its around 3200 cfm
It hugs the whole radiator and seals great.

* Engine: on the water neck, the one that houses the thermostat, it has a small hose that used to go to the heater i think, its sealed off. In my engine water goes in on the top from the rad, water comes out of the bottom neck to the rad, no other hoses are involved. Rear water port below the intake manifold is blocked off.
Could this be messing up something?

* Nismo thermostat
* Car has undertray covering the bottom of bashbar setup and ends with the radiator
* Hood has a vent, and its raised a bit
* Engine has oil restrictors, 1 blocked off, Tomei oil pump, baffled sump, enlarged oil returns.
* Big oil cooler up front (ebay)
* Running Methanol/Water mix after 14 psi
* 100 octane fuel
* 480hp @ 22 psi from a HE351 Holset Turbo

Im stumped i dont know what else to do or check...
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Old 04-15-2019, 09:54 PM   #2
Jamaica
 
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Ditch the flex fan and reinstall clutch fan setup
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