restrictive airbox at temp...
bigger turbo woooooo!
stock intercooler


probably not the most efficient use of the turbo??

Call up K&N tech support they will help you determine what cone air filter would be best.. there are calculations when choosing the right air filter *length height x base* etc.. which gives you the cubic air reading.

Maybe use some more hose to feed air into the airbox?

 

Equation:

(Change in Temp) = (Absolute Intake Temp) * ((Pressure Ratio)^(.238) -1) / (Compressor Efficiency)

Absolute Intake Temp is on the Rankine Scale, so intake temp is *F +460

(Pressure Ratio) = (Boost + 14.7psi) / (14.7psi)

So, let's work through an example:

Let's say we have an 80% efficient turbo, boosting at 14.7 psi (just to make things easy). That gives us a Pressure Ratio of 2.

Let's compare a cold air intake of 70*F (530*R) and a hot air intake of 120*F (580*R)

Pluging the numbers into the equation, we get a temperature rise of

CAI: 119*F

HAI: 130*F

So, in fact, the warmer the air your turbo is ingesting, the greater the rise in temperature of that air.

On the topic of intercooling, yes, the greater the temperature difference between the ambient air and the air flowing through the intercooler the more the air is cooled, but once again it is not a linear relationship. To get the coolest intake temps to the engine, at a set boost pressure, compressor efficiency, and with or without intercooling, you must get the coldest possible air into the turbo.

 

alright guys ive got a question, would it be possible to rig up an intake filter/cone/ whatever to where the stock intercooler sits? i mean to me it makes sense cause of the air coming in from the scoop, no?

 

yeah you could

 

The problem is you would need to fab up a large rectagular tubing section to clear the hood and the top of the throttle body/manifold. Then getting it to neck down to the 3" round opening on the AFM would require some creativity in the limited space. I thought about trying it on my car (NA with a TII hood), but the whole "ram air" effect is worthless anyway.

 

FYI once an air filter has enough surface area to keep from restricting a given cfm of air flow, further increasing the filter surface area does absolutely nothing for performance, although it does tend to increase the filter cleaning or replacement maintenance interval.

Even a 100% efficient compressor's discharge temperature would vary with the intake air temperature. Go ahead and crunch some numbers in your equation and you will see.

 

You're right, if all we were talking about was the (turbo) compressor itself.

Since we're also including the intercooler in this discussion, getting close to 100% becomes a possibility.

See above note on intercooler...
BTW, do you have the actual curve plotted, or are you ASSUMING this is the case?


-Ted

 

im not gonna try it, its just since were on the topic of crazy intake business i figured id ask haha

 

gay, guh guh gayyyyy.


anyways so how about that E85? :-)

 

Try 4chan's site.

 

isint that flimsy haso going to collapse when your turbo sucks in more air than that filter will let pass through?

 

Ask Arron about physics.

 

good job! very creative, don't worry about constructive criticism, it’s your car, do what you want

 

This isn't constructive criticism, more of a warning. His engine is about to grenade itself.

 

amen

 

not a fire hazzard at all.

 

old thread is old.

 

87 t-66 old thread it is... nanaimorotard Geez I never installed that thing... what a way to revive an old crappy post...

BTW car is running great. Just uploaded BDCs timing maps.

 

.

 

nice setup , much improved!

that sharp bend directly after the compressor isn't exactly ideal, but sometimes ya gotta do what ya gotta do w/ a front mount...

 

What did you do!? The bumper is missing? That H2 airbox waz waaayyyy better than this air radiator cooler thinghy.

PUT THE H2 AIRBOX AND DRYER VENT INTAKE BACK ON!! THAT WAS BIG BALLIN!

 

lol, I wonder if when I originally posted this crap years ago I was drunk...

I guess you cant hide old posts in this forum.. hahahhaa

BTW bumper melted with the engine fire right after it grenaded itself while boosting 43.4 psi according to the megasquirt logs. H2 hummer filters tend to do that yo!