I'm all stock, never checked temps after a session so don't know. But I've never seen 4 bars on the water gauge, even after 20-30min in 105* heat (and A/C on!).

 

never had a coolant temp problem after fitting an over-oversized j's radiator and a vented bonnet.. with this combination it can hold under 85C constantly under any condition..lap after lap.

js recommendation was to try and keep it to that temp on the track..

my issue is oil temp.. 110-120+C..

I guess it depends on how good the oil is..


as a temporary measure to see what impact extra vents would make.. you could remove the plastic front undertray.. and provide more radiator efficiency (at the expense of some areo efficiency)

 

I'd kill for 110-120C oil temp. That's about perfect.

Do you think there's pressure buildup in the engine bay reducing air flow through the radiator? Is that what the vented hood helps?

 

I've had a more than a few people tell me that oil temps on track of 130 c (264 F) are fine on track. I ran the west track at the new Miller Motorsports Park track in Utah today. I just stayed on it to see what temps would do ... car stabilizes pretty well between 120 and 125 c with a peaks here and there of 130 c.

BTW -- a lot of amazing cars on track today ... Carrera GT, Ford GT40, a slew of 911 turbos, GT3s, etc. Sadly, I didn't take the chase cam out today.

 

I've not been that impressed with the GT40 so far, last two I saw on track were mobile road blocks. I know it's the driver but, it makes me wonder why they'd buy something like that if they can't drive it.

How you do against competition like that? I know you probably weren't "racing" but, you get an idea of how things are working by the pass to passing ratio.

 

You say you are using a fal fan but I see no application for the s2000 on their website. Which one are you using?

 

Has anyone done airflow tests on vented hoods? I have a J's style hood (single inverted vent over the crossmember). I mounted my oil cooler horizontally below it.




The idea is that air comes in through the front of the car and some of it goes up and out of the hood vent via the oilcooler. But it has been mentioned to me that the area above the hood may be high pressure so air may not be flowing out.

I've been meaning to tie some red wool to the mesh an observe it at speed.

 

Ah, well, I've inadvertantly done a test with my J's hood. Basically, when driving in the wet conditions, I've notice water droplets being blown upward slightly at the vent location. Certainly, there is exhaust airflow there, from what I've seen. Just how much that is, I have no idea.

 

Nice to know. I'll do the wool test shortly but I don't have any red wool lying around since I gave up needlecraft. It's just too dangerous!

 

Cant you bump the pressure up? will that help? Is it possible to run a radiator thats too large?