Originally Posted by KMiata
(Post 1544664)
Super fun event, thanks for having us!
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Originally Posted by Oil Leak
(Post 1544667)
David, thanks for taking me for a ride, that was insane. You have another person thinking about a K Swap now.
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I wish my camera was working - I had some fun trying to chase down a couple of those K cars in the Red group. I'd love to have gotten a ride in one as well, but all my time outside the run groups was spent instructing or trying to cool off.
I also found out that the weather was worth about 5mph on the top end (~105 IAT this event compared to 75 the last go around). |
Anyone with a turbo BP engine care to share water temps and cooling setups from this event? I'm running a Supermiata radiator, no reroute, hacked up factory under tray and Singular vents. I was seeing about 225F towards the end of some of the afternoon sessions, which led me to back off a bit.
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- 2871 Chinacharger knock-off
- Kraken manifold - EBay aluminum rad - No undertray - Home-brew radiator ducting - Singular vents (only the side vents, not the center) - DIY reroute Max temps all day - 196 F |
Originally Posted by Morello
(Post 1545027)
Anyone with a turbo BP engine care to share water temps and cooling setups from this event? I'm running a Supermiata radiator, no reroute, hacked up factory under tray and Singular vents. I was seeing about 225F towards the end of some of the afternoon sessions, which led me to back off a bit.
Max MAT = 130. Max CLT = 210. Running 50/50 coolant. Thus, I could likely survive hotter ambients If I ran less coolant and more water, possibly with water wetter. If I wanted to run more power, I would want a better intercooler. Re-route is Step 1 in my opinion. |
I only saw 110F for MAT, but my FMIC takes up the whole grille opening and the factory front air duct basically forces all the air through the opening through the FMIC before the radiator.
Might end up with a reroute after all, which I was hoping to avoid on account of the factory VVT head gasket. |
Just spitballing here, which do you think might be more important, Inlet air temperature or coolant temperature? I would prioritize my placement of coolers appropriately for whatever my answer was.
My set up allows the air to travel above below and beside the intercooler on its way to the radiator because my radiator needs all the help it can get. |
Originally Posted by sixshooter
(Post 1545131)
Just spitballing here, which do you think might be more important, Inlet air temperature or coolant temperature? I would prioritize my placement of coolers appropriately for whatever my answer was.
My set up allows the air to travel above below and beside the intercooler on its way to the radiator because my radiator needs all the help it can get. Pick your poison. |
I may experiment with removing the front plastic baffle to let some air flow around the intercooler and to the radiator. 3 days at Grid Life coming up at the end of August is sure to be hot as balls so I'd like to have something figured out for then, though Road Atlanta isn't as bad as AMP for heat/air flow it seems. Are high intake temps more likely to cause knock than high water temps are to cause mechanical damage? I don't think mechanical damage will happen at 230F based on my experience with other engines, but I may be wrong.
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AMP is so short that you don't really have a chance to cool down except between 16 & 1 (AMP is like a super-long autox course). RA is more typical of a long-ish road course.
I'd defer to the "real racers" on here, but my mind says that engines don't "like" hot air (thus intercoolers and the like), so high IATs = bad news. My (ancient) thermodynamics brain says, high temps = less ability to hold fuel in suspension = leaner mixtures = higher potential for pre-ignition/knock/detonation = crankcase ventilation. In my car, I don't see temps much over 210F, even heat-soaked on I-285 in a traffic jam. Anything above that and I'd be parked on the side of the road waiting for things to cool down. Call me paranoid, but I've spun bearings because of oil starvation so anything that even HINTS of that gives me the willies. |
Originally Posted by rwyatt365
(Post 1544237)
https://cimg1.ibsrv.net/gimg/www.mia...91c59f8ae2.png Lesson learned |
I wondered what was going on, saw it right when I was leaving.
https://lh3.googleusercontent.com/Ft...=w1063-h797-no |
He was baking brownies.
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Originally Posted by sixshooter
(Post 1545391)
He was baking brownies.
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Saw that too - scary! My solution was to wrap literally everything around the turbo with reflective heat tape or wrap... I just don't see how to build a box around the efr6258.
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Originally Posted by Morello
(Post 1545654)
Saw that too - scary! My solution was to wrap literally everything around the turbo with reflective heat tape or wrap... I just don't see how to build a box around the efr6258.
On the other hand - when I think that 30 seconds before everything went up in smoke I was foot to the floor, coming out of turn 14. Had the brakes failed then I would be writing this from a hospital bed. |
Morello, I was overheating that day too. 1.6L running 10psi, SuperMiata radiator, reroute. Was’t data logging, but the stock temp gauge was unhappy. Went back the next week, same problem. I think AMP is just tough, heavy on the throttle with no long straights for airflow. Going back on Saturday, going to switch to straight water (currently running 1/3 antifreeze).
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Originally Posted by Schroedinger
(Post 1545720)
Morello, I was overheating that day too. 1.6L running 10psi, SuperMiata radiator, reroute. Was’t data logging, but the stock temp gauge was unhappy. Went back the next week, same problem. I think AMP is just tough, heavy on the throttle with no long straights for airflow. Going back on Saturday, going to switch to straight water (currently running 1/3 antifreeze).
I'll try to siphon a quart out and run some water wetter for the next event to see if that helps.. I also had a couple folks recommend punching holes in the bumper above the intercooler to feed some air directly into the radiator cavity... |
Didn't help. I ordered Singular hood vents, we'll see if that does any good.
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