mike keirstead said:Whatever you say dude....it works for me.
mike keirstead said:Like i said man...when i go to the track and my car is cool as cool gets it runs 12.68-12.72 EVERTIME......When i ice the intake and inlet pipe it runs 12.58-12.64 everytime.......It may not works for some people but it works for me. So you can type all day long its not going to stop me from using a few bags of ice at the track.....i dont care if i dont use it on the street...i use it at the track and thats that.
You can mimic me...quote me....laugh at me.....i dont really care... i use ice and IT WORKS.
mike keirstead said:Your real funny...i dont use a twister....i am just saying that ice works for MEEEEEEEEE.. maybe not the next guy...so piss off
bmo37 said:and all u guys saying it works on an efi car... BS... I know its not possible to cool the intake that much to make a difference in between runs. Ever hear of the concept of intercooler on boosted applications, wonder why they don't give that up and make intake manifold coolers instead since if works so well like you say.
Point im making is that in between runs your not going to be able to cool the intake enough to make a difference in your run. Its all in your head. After every run I change my left sock and I gain 1/10 so it must work too.
stanggod said:How do you know it doesnt work, have you ever tried it? Man you must like to argue.
bmo37 said:yes i have and it doesn't drop your et .10 of a second, I've had 3 stangs, 1 camaro and a gta trans am, and its just a placebo effect. Like i said i change my left sock after every race and i drop .10 of a second every time i do it.
On a carbed application the ice on the intake has little effect but on a efi application with an upper and lower intake its damn near impossible to drop the temp of the intake and transfer the temp drop from the upper and into the lower intake.
also the entering air doesn't sit long enough in the intake to be affected by its temp, if it wasn't the case car engineers would design intakes to circulate coolant throught themselves, the reason they don't is it doesn't effect the incomming air enough to make a difference.
bmo37 said:you can't compare an intercooler that cools the acutal air to icing your intake. If you can use physics to prove your heat transfer (or drop from that matter) than I'll listen. No one can convince me that by putting ice on your upper intake that you'll be able to affect the incomming air temp going into the engine.
Funny you guys keep firing back but with no proof. I'm just sticking up for my opinion that this guy calls BS.
stanggod said:Hard to prove unless you go to the track and make runs without, and with. You could also do it on the dyno. Why can't you compare the intercooler to an intake? Have you actually seen a water to air intercooler in person.
so let me get this rightSHAGGY87 said:Mr. Yount,
I see that you look at things in an adversarial manner...
Why do lots of people ice their intakes in the staging lanes? Same reason as 90% of people like SpongeBob-Square Pants, or as all those folks a few years back wore their 'CK' shirts - because it's the latest thing.... If so-and-so is doing it, it must be good, so I'll do it too!
You have missed the point completely in what I'm stating. The temp. of the intake manifold itself will not have an influence on the incoming air temp, there is not enough saturation time for there to be an effect. The air is moving at aprox. 10 cfs - 600cfm, tell me where and how the heat transfer will take place? There is not enough dwell time - saturation time. If the air was stagnant then yes, then the air would be hotter. But in this N.A. application the incoming intake air charge will not change temperature from O.A.T. all the way to the combustion chamber (well, maybe ~2-3 degrees). Please show me in a formulaic manner if you care to differ.
Most race car applications produce abundant power in a richer than stoichiometric condition.
Good day Mr. Yount
A 5.0 efi intake does have coolant circulated through the upper/lower intake and the egr spacer.bmo37 said:... also the entering air doesn't sit long enough in the intake to be affected by its temp, if it wasn't the case car engineers would design intakes to circulate coolant throught themselves, the reason they don't is it doesn't effect the incomming air enough to make a difference.
This seems to be very plausible, and it's what I've always heard even to the case of running 180 degree F thermostat, but it has been stated that even carb'd cars benefit from icing the intake. It would seem any means of lowering temp. is beneficial even Icing an aluminum intake.the other guy said:... EFI car allows the intake to cool, which in turn provides a lower reading on the sensors in the manifold, which tricks the computer into thinking the engine is cold so it is safe to supply a better timing and fuel curve.
Azul93GT said:A 5.0 efi intake does have coolant circulated through the upper/lower intake and the egr spacer.
I think that it has been fairly well established by posters here as well as various performance publications that icing the intake has an effect. The question seems to be, what is the actual mechanism at work.
This seems to be very plausible, and it's what I've always heard even to the case of running 180 degree F thermostat, but it has been stated that even carb'd cars benefit from icing the intake. It would seem any means of lowering temp. is beneficial even Icing an aluminum intake.
I no longer have my stock intake manifolds, but isn't there a single water passage in the very center of the intake between the upper and the lower? I could be wrong.bmo37 said:show me where the upper intake circulates coolant please, unless you have a magic intake that no one else does, and the egr isn't part of the intake system rather the coolant circulated through it is used to cool the recirculated gases that weren't fully burnt by the combustion process otherwise you'll be pumping hot exhaust gases into your combustion chamber...
bmo37 said:I agree with shaggy, in theory cooler more dense air makes more hp, but the intake itself is a 30 lb piece of metal that hot from driving now your telling me by ploping a bag of ice on top is going to cool the intake to make enough difference on the incomming air, that your et will reflect it. Again I say its the placebo effect also.
I would say yes it could happen if you decide to take the upper and lower intake off in between runs and through it in a freezer for a couple of hours and could magically install it within 10 mins, than I would say yeah it effect performance.
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