Moar overheating!

[Erick]

How is it an airflow issue if the car overheats while idling?

If anything, it sounds like a water flow issue to me. Something like limited water flow... perhaps something clogged (Although aside from something inside the motor or the radiator, I have no idea)

[Jean]

Test the radiator? Unless your gasket went when it overheated there isn't much else left to check....

[yert315]

How is it an airflow issue if the car overheats while idling?

If anything, it sounds like a water flow issue to me. Something like limited water flow... perhaps something clogged (Although aside from something inside the motor or the radiator, I have no idea)

It sounds like 60mph+ flows enough air through the radiator to cool it down. Im not saying your fan is bad, but the fins on the radiator may be beyond fucked and restricting airflow. I'm just spit balling here.

[Erick]

That's what I'm guessing now. Its just beyond frustrating to see this going on. If I get a new radiator and this doesn't get any better, I give up on the M30.

No point in having a motor that I can barely keep cool in normal "winter" conditions.

[Erick]

It sounds like 60mph+ flows enough air through the radiator to cool it down. Im not saying your fan is bad, but the fins on the radiator may be beyond fucked and restricting airflow. I'm just spit balling here.

Oh I know the fan isn't bad. My point is that the motor overheats while sitting... this FAR concerns me much more from the fact that it takes longer than I believe it should for it to cool down while moving.

[Jean]

That's what I'm guessing now. Its just beyond frustrating to see this going on. If I get a new radiator and this doesn't get any better, I give up on the M30.

No point in having a motor that I can barely keep cool in normal "winter" conditions.

It's not really an M30 issue, there are many cars out there with this swap not overheating. Mine has been running for about 5? months now with NO FAN other than A/C Fan that I manually turn on/off with the A/C button only in traffic to keep it at 1/2 mark.

[yert315]

Oh I know the fan isn't bad. My point is that the motor overheats while sitting... this FAR concerns me much more from the fact that it takes longer than I believe it should for it to cool down while moving.

I think we have the same issue in mind with different symptoms. In the end, I think your radiator may be bad...

[Erick]

It's not really an M30 issue, there are many cars out there with this swap not overheating. Mine has been running for about 5? months now with NO FAN other than A/C Fan that I manually turn on/off with the A/C button only in traffic to keep it at 1/2 mark.

Yeah I know... that's my argument most of the times when people are telling me I need an aluminum radiator and some crazy electric water pump setup.

It's just frustrated talk going on right now. I'm really at a loss of ideas.

- Erick

[Good & Tight]

That's what I'm guessing now. Its just beyond frustrating to see this going on. If I get a new radiator and this doesn't get any better, I give up on the M30.

No point in having a motor that I can barely keep cool in normal "winter" conditions.

Erick I drive my turbo M30 all year long and in the dead of summer and it never gets past 185.
You either
A. Have a blown headgasket
B. Old crappy radiator
C. Coolant lines mixed up

But first of all you should put the thermostat back in and go from there.

[Erick]

Yeah, I suppose I'll do the radiator next. I'll try to bring the car out next Thursday for the meet.

[Good & Tight]

Yeah, I suppose I'll do the radiator next. I'll try to bring the car out next Thursday for the meet.

Put the thermostat back in, that could be your problem right there. I'm going this Thursday.

[Erick]

Put the thermostat back in, that could be your problem right there. I'm going this Thursday.

I somewhat doubt it, as it's been doing that since before I removed it. But we'll see. I'm about to do a buck shot and replace as much stuff as I can and see what works.

- Erick

[LowR3V'in]

On the freeway, at a constant speed, where is the needle on the gauge?
Mine would always buries itself in the blue without the thermostat.

Would you lose any water after a drift event?

[Erick]

On a cold night, it'll creep itself to the blue with the SPAL fan (before and after removing the T-Stat)

I don't lose water until water goes to 3/4. At that point the expansion tank starts blowing out water through the drain behind the front/drivers wheel.

[evil_twin]

Try a fan shroud, not too sure about m30 motors, but I know with my m52 it overheats quick when I start laying on the throttle even when the fan is always on (i have a 16" pusher fan w/out fan shroud and I think 88* thermostat).

I'm not too sure if it's a air bubble thing, but when you go to rebleed the system, raise the front of the car, so all the air goes to the highest point (ie radiator) and will bleed, or you can use a vacuum bleeder. I know when i worked at Nissan I bought one of those and never had any coolant issues when refilling the system.

And if thats still not the case, run a different mix. You're in FL, it doesn't get TOO cold down there so you can easily run a 75/25 mix with some water wetter from Redline.

Oh BTW, I'm going down to Ft. Lauderdale in May for work :)