What coolant temps should I try to maintain before a pass?
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From: Champaign Il
What coolant temps should I try to maintain before a pass? My car usually runs 180-190 on the street. If I make a pass starting at 180-190, I'm at 200 by the end. I know that not "bad" but I would think it would be better if it were cooler. Should I try to get the temps lower at start?
It would help. I find it hard to get the temps down while at the track unless you have a electric pump. If you wait long enough to let the car naturally cool down you end up with very few passes, atleast in my experience.
From 160 to 200 degrees staging make little difference for my car, cooling off the blower with a fan betwee rounds makes more difference in ET than cooler water temps for me.
I have a electric water pump, with it and the fan on and the car not running I can go down from 200 to 160 in under 10 minutes.
I usually shoot for 180 staging the car.
I have a electric water pump, with it and the fan on and the car not running I can go down from 200 to 160 in under 10 minutes.
I usually shoot for 180 staging the car.
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From: Champaign Il
Wish I had a generator so I could run a fan. It took probably a good 45 minutes to cool it down last night. Got 3 passes in, but would have been 4 if someone hadn't blown a rear end and closed a whole lane down.
So what is a normal temperature rise on a pass? Say I start at 180, what is reasonable to see at the end?
On my last pass the car had sat for almost 1.5 hours (oil down) and I swear it felt waaay faster than before. It only went 6.80 at 108.4, but man it really felt strong.
So what is a normal temperature rise on a pass? Say I start at 180, what is reasonable to see at the end?
On my last pass the car had sat for almost 1.5 hours (oil down) and I swear it felt waaay faster than before. It only went 6.80 at 108.4, but man it really felt strong.
I pick up around 3-5 degrees on a 1/4 mile pass from when I let go of the trans brake to when I let off throttle. It will pick up another 5 degrees by the time I turn off the return road and then start coming back down from there.
I just have a small, quiet and light 1000 watt generator and one of those 40.00 blowers to point at the supercharger on hot days. If its below 80 degrees I dont use it usually.
I just have a small, quiet and light 1000 watt generator and one of those 40.00 blowers to point at the supercharger on hot days. If its below 80 degrees I dont use it usually.
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I'm not a big fan of throwing anything in pre blower or turbo. I dont think anything can beat getting the coolest air as possible into the blower, not sure what water would do really. I have no real data that cooling off the blower itself before a pass really makes a huge difference in power, but when its 95 degrees out I do see lower IATs when I cool the blower down.
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From: Champaign Il
I'm not a big fan of throwing anything in pre blower or turbo. I dont think anything can beat getting the coolest air as possible into the blower, not sure what water would do really. I have no real data that cooling off the blower itself before a pass really makes a huge difference in power, but when its 95 degrees out I do see lower IATs when I cool the blower down.
I read an article about Steve Morris racing engines where he claimed that water injection at the blower inlet was best. IIRC, he said the blower actually worked better due to the moisture "sealing" it up more and creating more boost. Personally, I don't see it making that much difference, but its hard to argue with a builder with his experience.
I read an article about Steve Morris racing engines where he claimed that water injection at the blower inlet was best. IIRC, he said the blower actually worked better due to the moisture "sealing" it up more and creating more boost. Personally, I don't see it making that much difference, but its hard to argue with a builder with his experience.
IMO nothing can beat cool, dry, and dense air at the blower inlet, water injection does only 1 of the three..
A little off topic, but you guys should see Steve Morris's shop
He did my block and balancing, while I was there i checked out some crazy stuff. Like near $100,000 procharged injected 2000+ HP big blocks, measly 1500 procharged big blocks etc.... He is very innovative with the Procharged stuff , and a great guy. If you guys are kicking around the idea of injecting water, give him a call and pick his brain a bit, he will give it to you straight.
He did my block and balancing, while I was there i checked out some crazy stuff. Like near $100,000 procharged injected 2000+ HP big blocks, measly 1500 procharged big blocks etc.... He is very innovative with the Procharged stuff , and a great guy. If you guys are kicking around the idea of injecting water, give him a call and pick his brain a bit, he will give it to you straight.