do you have any numbers for h2o vs c02 vs nos???

 

I don't. The Co2 is colder & works faster compaired to water. Is it the best? The STI, up the block, has a big IC mounted in the lower bumper ( you can't miss it ) Co2 works well on his car, trust me on this 1. If you worry about Co2 being sucked into the intake, you may have the same problem with water.

Some of us have been working on passive solutions ( I'll post 1 later ) Obehave can jump in here with some comments I'm sure, he has done some good experiments. Most of the focus is on underhood heat reduction. Yes there is not much room to vent heat, in fact somewhere someone said "first you need to identify where the heat sourse is" ( if you went to the sun & wanted to find the heat sourse.... ). It's pretty easy to say, the heat is everywhere. Anyway, this info is in another thread on this site.

 

thx stevecars60,i really would like the those numbers maybe someone reading this thread might have an idea about it.it makes sense that water would be the slowest but it might give some decent numbers with ice water to be serious again with the m7 intercooler i would think that the air filter would not be a problem, what do you think???

 

Some people look at the Alta diverter & don't understand the function well. It works well with or without the water sprayer. Another benifet is the added air flow not just for the IC but the whole under hood. The stock diverter ( the black thing in applied to the under hood ) uses a lot of room for not much benifet. The Alta solution removes the OE piece & replaceses it with a more efficent & larger air mass to feed the IC. So, what I'm seeing is a much quicker recovery at low speed than the stock unit ( without water ). HP #s don't really mean much when you're dealing with this kind of heat. Making more efficient air flow will bring the HP by virtue of better temp control. When I have time I'll find the thread.
And here it is https://www.northamericanmotoring.co...ad.php?t=71261

 

ok stevecars60, i did a little research and found that a combination of water and methanol in a 50 to 50 mix might do the trick. your thoughts?

 

The stock IC has some pretty thin aluminum. Methanol is very corrosive. I think it would work but at the expence of the IC. There is only a thin layer of paint on them.
Look at the Air flow thread. There a couple of us looking for a passive system that works. Then more can be done.

 

keep me informed please!

 

We've done some side-by-side tests of dry intercoolers versus water misting and on our dyno, it doesn't make a huge impact. That's not to say that it won't on the street. I think diverters/misters such as the Alta are a really good piece, and a much better value than a big core. What we've noticed is that when the intake temps balloon to over 80 C., the timing retards regarless of knock sensor activity. The hard part is keeping temps near what they would be on the street. In the good ol' dayz, before Mr. Ross-Tech justifiably took his ball to another playground, he did exhaustive datalogs on street temps. That info still exists on this site and should be referenced when doing dynos.

Richard's suggestion to do the runs in third is actually a good one: it will keep the intake temps much better under control. Caveat Emptor! Don't compare your peak numbers to a car dynoed in 4th gear. They are not comparable. You could use such a test as a tuning tool, not a bench racing tool. I just did several runs to illuminate this for a customer. Let me scan the sheets and I'll post what I'm talking about...

 

Okay, here's what I'm talking about:






Notice the times of the dynos. That's right: same car, same day, same dyno, no modifications whatsoever to the car. Just a parasitics adjustment to the dyno computer. That's why dynos are bad sales tools: they are too easily manipulated*. But if you are looking for real tuning results in a controlled environment, there is no substitute. If anyone in this discussion is near philly, I'd be willing to do some temp comparison dyno runs between third and fourth. Maybe dyno runs in third is closer to street conditions than what we are doing now (fourth with a high velocity fan on the intercooler).



*who wants to buy our 600hp TurboKompressor kit ?

 

Have you guys considered spraying on the inside? 50/50 water/methanol mix has an amazing effect on the pre-combustion temp

 

Yup,

We did see a 15 peak uncorrected whp improvement over the base TurboKompressor kit with an Aquamist system, so that is an option.

 

the answer to that is yes but what is the downside to it?????

 

Downside to WI? Methanol is expensive but the good news is that a 50/50 mix of a gallons worth will last quite a long time on the street as it is only switched on at 10psi and over (WOT)...at the track, it might last a 20 min session using a 5gph spray at 120psi...

On turbo motors that rely on WI for increased boost, running out would be catastrophic without some type of low fluid warning...as I'm not increasing boost with fixed SC boost, running out would just mean that the ECU would automatically retard the timing back to normal and loose a few hp...

 

HEY, someone agrees with me! The short and simple is, my first dyno day and many runs, in 4th gear, showed a peak torque of 165-167 and my second dyno day, also many runs, in 3rd gear, showed a peak of 170 lbs. I think that on a my JCW, I would normally expect to see a 5 lb. difference in torque peak between 3rd and 4th. Peak hp numbers seemed to be less repeatable to me in 4th but topped at an avg. of 185 whp. In third I got 196 whp.

Please also note I am on light weight wheels and small diameter tires, 22.7".

 

Good point. People always want to compare peak HP numbers for bench racing purposes. Torque is really where the fun is: cars with torquey motors feel way faster than cars with high HP motors. An E36 M3 feels faster than an Elise, even though the Elise has a much better power-to-weight ratio.

 

http://www.snowperformance.net/prodd...prod=40060%2dg

go to this web site and check this out!

 

ooops...the secrets out

 

i fixed my timing problem with a new intercooler from M7, installed it yesterday and dyno'ed it this morning.all i can say is fantastic!!!! you can feel the diference when you are driving in all gears.at the dyno i did not pull timing and was able to gain 7hp but no torque.i still used a 4th gear pull.the a/f stayed at 12:1. now to move on to the M7 exhaust,as soon as i get it i will dyno this and post it,cheers!