Do any of you remove your nostril inserts when you head to the track? I removed one the other day to see how much more of the radiator would be exposed to direct air current, and is wasnt much but I would think every little bit would help. I remember seeing pics of the WC cars that had the nostril holes cut out to be bigger openings.
would it be worth it to remove them for an HPDE that will most likely be in the 85-90 degree area for the day?
I plan to remove the hood insert this time to get more air to the turbo area
lower temp tstat will do =] you are only doing 20 minute sessions. So you dont really have an issue with heat soak you get in a endo race like WC. Remember those engines have to do a lot more work and since oil starts to breakdown and such, you really have to do what you can to cool the car from all the stress of a long run. ( no pit stops in WC unless you are broken =] )
Since your oil temps and your engine coolant temp will never make it over 210 with a 180 tstat on that track with a 1/2 hour session at qualifying speeds, you dont need to increase the drag by opening up the front of the car =]
I see oil temps of 195-215 just daily driving. Last HPDE, my RedLine 10w40 reached 240 degrees and stayed there through the whole session. coolant never went over 215ish. weather this weekend is looking to be around 95 degrees, so I was trying to find out if there was any other ways to keep the coolant in check.
yah I was gonna suggest a 180 since we do live in the PNW and sometimes it does get mity cold ... pardon the pun. =] I see 200 when running hard with a 180. If I could remember I would run a 160 then swap in a 180 when I was done for the season. but as far as coolant goes I'm sorta reactionary. That is to say, if its actively doing something I dont like, then I fix it ... and I don't like fixing stuff I broke on purpose. So a 180 works for me all year =]
I guess I will see how it goes this time around. For the July Hpde I will change to a 180 stat and see if its any better. I use to have a 180 stat a little over a year ago, but I lost MPG's, so I got rid of it. After all of my research on oils, I shouldnt be worried about oil temps with a good synthetic until I start to see the 280+ degrees on the oil temp gauge. Corvettes and BMW's frequently run in the 300 degree range.
As long as the coolant stays under 220, I will be happy. Since we have an oil/coolant heat exchanger, its hard to find a good balance between coolant and oil temps. they relate to eachother. I thought about trying redline 10w30 this go around, beause I have read that the thinner 30 weight will move the heat faster around the motor, and staying cooler in the process. But, since the 10w40 has worked well in the past, I didnt want to take a chance at something not working out right at the track and having to change something at the track.
David, I cant beleive the luck we have had on the weather here during track days. this will be my 4th HPDE, and I have only seen rain on the 1st one.......for the last 5 minutes of my last session of the day.
I put the heater on, with the hot air going towards the floor. A little uncomfortable but the extra heat exchanger keeps things a little cooler.
Adrien
I do that also....keeps the car a little cooler by helping to pull some of the heat out of the coolant, but man on those 95* days in SC, GA & AL it can be pretty rough!
With my 180* I still run about 220* while on the track. It drops back to 200* after I get into the paddock though....
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Well, it turned out to be 97 degrees... Hot as hell! I had to take a couple laps to just cruise to cool the engine down. My temps were heading towards the red and would have reached it had I not backed off. I removed the nostrils for the last session and I believe it helped a little. And I do have a 180 degree thermostat in... Plus water wetter... I wouldn't of been able to last very long with the heat on. Any other ways to lower the engine temps? There was only one of us (out of four) running consistantly around 220...
Was thinking about a new radiator, however, one of us was running a Visteon radiator and he wasn't having any better luck. We were thinking of some venting via a splitter that would try to pull the hot air from the engine bay... Or maybe something to create a pressure difference. Supposedly the plastic air blade is supposed to do that? I'm about to run w/o a hood at this point!
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Nostril Inserts...remove or leave in?
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