Track guys, how do you keep the iats down in the staging lanes?
09-17-2018, 08:57 PM
#1
Track guys, how do you keep the iats down in the staging lanes? So sitting at idle and low speeds my iats start climbing slowly from heat soak. Here in Louisiana it gets HOT. I can’t cool my iat temps while sitting in the staging lanes and if I get over 130f it starts pulling timing. Not good for power. Not really wanting to lug bags of ice around with me to the track, plus I feel that’s artificial because you can I’ve your intake going down the road anyways (unless you have a air to water setup) and I’m not a fan of spraying the intercooler and making a watery mess. Any other ideas? I thought about a couple small spal like 7” cooling fans. I’ve been reading and some people say it impedes airflow at higher speeds. This is also from people who haven’t tried it. Just taking an Internet guess I suppose? I can set the fans to cut off at 50mph like my regular fans do. Any other ideas? I also have to sit in alot of traffic and it gets heat soaked. I saw about 140f today. Yea it’ll coool down when I start moving but it does take a few minutes. Imagine this. I’m sitting in traffic. Temps climbing. At this point it cuts timing. Traffic clears. Next to me is that pesky mustang that keeps jumping at me. Traffic clears. It’s go time. But guess what, I’m down 40-50hp (feels like it anyways) because it’s pulling timing at this point. So instead of putting the snack down on in, I fight to edge him out. No. I want to be prepared at all times for the street fight. Lol. Ideas. Go. Tried fans?
09-17-2018, 10:10 PM
#2
Shut it down. I don't start the car and move until there's 3 empty spots in front of me and I'll just not move if I'm 1 or 2 spots from the line in staging, until the starter tells me it's my turn. Keep it shut down as much as possible. Only time I let it run is if I need to get coolant temp up.
09-17-2018, 10:23 PM
#4
Ya, kinda the same. Get a running start to staging lanes, shut it down and coast. Then push it till it's your turn and start it back up. I've never had my car running while waiting to race.
09-17-2018, 11:14 PM
#6
no. I was making a funny example. But on a side note, you’ve never ever raced anyone on the street? If you can honestly answer no to that, then I applaud you. But if you have, well.....don’t throw stones if you live in a glass house type thing.
My main concerns are the heat soak in traffic which my daily commute consists of a lot of traffic. Example: I live 26 miles from work. Going normal speeds I can get home in 30 minutes during non peak traffic hours, but like today, it took me an hour and 15 minutes to get home. And my other concern is cooling it at the track without having to remember to pack ice. So no one thinks the fans would be a good idea?
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09-18-2018, 01:33 AM
#8
I used to run a separate ON switch for the radiator fans. In the staging lanes I just keep everything off, but in a street situation, letting the fans run helps a lot. Just remember to use a good battery. Launching with low IATs is no help if you don't have the juice left to run your fuel pump and coils later on.
09-18-2018, 07:45 AM
#11
Is your air intake ducted outside the car-that helps a little, under hood temps are crazy.
As said, don't pull timing until later. Waiting in line to race has always been a problem with
heat, gotta love staging lanes with a little slope downward, lol.
At one time I had an idea of using a small fan, like a torpedo one, with a duct aimed at the IC,
wouldn't block anything.
As said, don't pull timing until later. Waiting in line to race has always been a problem with
heat, gotta love staging lanes with a little slope downward, lol.
At one time I had an idea of using a small fan, like a torpedo one, with a duct aimed at the IC,
wouldn't block anything.
09-18-2018, 12:56 PM
#13
The air is in and out of the motor so fast the under hood heat soaked IAT doesn't give any good data anyway. Stop pulling timing at those temps. simple as that. Use coolant temp table or even better, tune it by the plug. I typically start around 130-150 on hot days and i'm down to 100 by the 330 and maybe 140-145 at the 1/4. I don't pull timing till 150 and I don't see those temps since getting a decent IC. (old ebay IC would hit 170*, run a treadstone now).
09-18-2018, 02:38 PM
#14
Is your air intake ducted outside the car-that helps a little, under hood temps are crazy.
As said, don't pull timing until later. Waiting in line to race has always been a problem with
heat, gotta love staging lanes with a little slope downward, lol.
At one time I had an idea of using a small fan, like a torpedo one, with a duct aimed at the IC,
wouldn't block anything.
As said, don't pull timing until later. Waiting in line to race has always been a problem with
heat, gotta love staging lanes with a little slope downward, lol.
At one time I had an idea of using a small fan, like a torpedo one, with a duct aimed at the IC,
wouldn't block anything.
my air filter is outside the engine compartment
09-18-2018, 02:45 PM
#15
The air is in and out of the motor so fast the under hood heat soaked IAT doesn't give any good data anyway. Stop pulling timing at those temps. simple as that. Use coolant temp table or even better, tune it by the plug. I typically start around 130-150 on hot days and i'm down to 100 by the 330 and maybe 140-145 at the 1/4. I don't pull timing till 150 and I don't see those temps since getting a decent IC. (old ebay IC would hit 170*, run a treadstone now).
well heres what I did. I took my maf housing, it’s msinly plastic. I gutted it. Left the temp thermistor in it. Then I got an aftermarket temp guage and sensor. I machined a aluminum bung. I put the aftermarket temp sensor in a piece of small silicone hose to insulate it from the aluminum. Pressed it into the bung I made. Epoxy the ends to seal it. Then it threads into the plastic of the maf housing. I can keep an eye on my iats at a glance.
09-19-2018, 09:51 AM
#16
I always had fan that could pull air through the intercooler. Also had a bypass switch that could turn the fan on when in the lanes.
At one point, I had a set of spray nozzles the would spray water over the intercooler when I was a couple of cars away from the line. It used the windshield washer reservoir and misting nozzles like the ones they use in the grocery store to keep vegetables moist. Worked great.
Depending on your engine management, it may not be to hard to have a fan come on when IAT gets high. Or it could be done independently.
At one point, I had a set of spray nozzles the would spray water over the intercooler when I was a couple of cars away from the line. It used the windshield washer reservoir and misting nozzles like the ones they use in the grocery store to keep vegetables moist. Worked great.
Depending on your engine management, it may not be to hard to have a fan come on when IAT gets high. Or it could be done independently.
Last edited by LSswap; 09-19-2018 at 10:03 AM.
09-19-2018, 12:37 PM
#20