So i've done the basics:

Koyo radiator, mugen thermostat/switch, carbon cooling plate (front of radiator -> radiator), better hoses, oil cooler.

My car is turbo'd and running 1.6bar on a GT3076R. It's got about 500whp.

When I drive it for a few minutes between 200 - 285 km/h the engine temps begin to rise above recommended. Well oil temps is at 110C and water temp 100C. If I continue to drive like that the temps rise even more.
Speeds below 180km/h aren't a problem.

What can I do to keep the temps down and more air in the radiator?
My intercooler is up front ofcourse and causing alot of air to go through it instead of through the radiator. So I suppose cutting the bumper would be an idea.

Will Venting the hood make a difference?

What about under the car, making vents?

I've still got the AP1 bumper on tha car but have a Shine (ASM replica) ready to go.

 

Sounds like you need to do some diagnostics not add parts. Most run the factory radiator with no problems.

Are you sure the WP is in good working order, is the radiator or component clogged, is the TStat working, are the fans working, is the system holding pressure, have you tested the antifreeze?

 

 

[QUOTE=dsddcd,Jun 29 2009, 04:42 PM] Sounds like you need to do some diagnostics not add parts.

 

Sounds like the head might be lifting under high loads.....

That's the first thing that popped into my mind

 

It really sounds like you still have some trapped air. Have you opened the bleeder when the temps are high? WARNING - It's very dangerous, only do it if you know what you are doing!!!!!

Let's start with getting some more info"

What kind of coolant are you running? What mixture?

OEM fans? Are they both working?

Did you have the problem after you replaced the thermostat? You may want to test the thermostat.

-Chris

 

200 - 285 km/h is pretty fast. Are you doing sustained high speed runs? Autobahn style driving? If so, it makes complete sense. What outside temps are you seeing while doing this? The turbo track guys have had big issues with oil temps while racing, especially in the warmer weather. Most of the turbo people, especially in the US, don't do too many sustained high speed drives. Its usually just a few gear pulls. The oil temps are the main issue, as it seems the increased oil temps will have a direct influence on the coolant temps.

I would recommend you get an oil cooler, that has a low pressure drop. Also might want to try a V setup with intercooler and radiator. Whatever the case, work out these temp issues before you keep doing high speed runs. Its the super high speed runs with constant WOT that will kill these engines really quick!

 

Especially with a model year 2000 unless you have upgraded your oil jets ? Many early model engines went because of this and they where N/A

Also I might add if you go with an oil cooler put a thermostat on it. My tuner told me oil being too cold is just as bad as it being too hot.

 

A good vented hood should be of significant help. Also, try to make sure all the air going through the front opening is actually going through the radiator and not around it; you may have to work on the shrouding to the radiator.

 

What type of timing and a/f are you data loging at that speed? It could be a calibration issue.