Teg4e

i have the "spearco" type intercooler which comes standard with the DRAG kit and I'm trying to figure out which way it should go. One entrance's inner diameter is 2" while the other is 1.75". Do I want a bigger entrance or exit?

Ethan

(Sorry for the newbie question)

Arturbo

Turbo----------->2.25"inlet----------->IC---------->2.5" piping outlet---------throttle body.

Hope that helps.

art

DIRep972

iTrader: (1)

but art, what if both end tanks have the same diamater inlets. does it matter then?

Smashback

Yes, you have to have the bigger of the same size pipes pointed towards the ground

ninesecrx

The smaller end of the intercooler goes to the turbo side and the bigger of the 2 towards the tb. Intercoolers dont have a designated in/out. You can use either side if they have the same size openings....Mike

digitalcongo

a thread worth bringing back imo
someone just telling you to do something is wrong
this deserves reason

if the smaller end is on the tb side the hot air enters the intercooler easy but it has a harder time leaving...
which is going to cool it down more...
if the smaller side is closer to the turbo...
it will have a harder time getting into the intercooler....
and then leave easy...

either way the the smallest part of the entire turbo pipeline is going to increase the pressure and temperature...
it mine as well be at the end of your intercooler creating a dam and cooling the air more...

granted that cooler air is more dense...
so logic says that there will be more air at the cooler side and needs a bigger port
wrong...your turbo will flow whatever air it can into the intercooler...
either way it will have the size restriction at the beginning or the end...
you do not need to make more room for it on the other end due to density change....
a diameter limit at one point limits the whole system...
but you can put it anywhere




Modified by digitalcongo at 9:09 PM 8/10/2005

nota-eg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by digitalcongo &raquo;</TD></TR><TR><TD CLASS="quote">a thread worth bringing back imo
someone just telling you to do something is wrong
this deserves reason

if the smaller end is on the tb side the hot air enters the intercooler easy but it has a harder time leaving...
which is going to cool it down more...
if the smaller side is closer to the turbo...
it will have a harder time getting into the intercooler....
and then leave easy...

either way the the smallest part of the entire turbo pipeline is going to increase the pressure and temperature...
it mine as well be at the end of your intercooler creating a dam and cooling the air more...

granted that cooler air is more dense...
so logic says that there will be more air at the cooler side and needs a bigger port
wrong...your turbo will flow whatever air it can into the intercooler...
either way it will have the size restriction at the beginning or the end...
you do not need to make more room for it on the other end due to density change....
a diameter limit at one point limits the whole system...
but you can put it anywhere


Modified by digitalcongo at 9:09 PM 8/10/2005</TD></TR></TABLE>

So if the smaller end is towards the TB won't that increase pressure, increasing temperature?

And if hot air is less dense than cold air shouldn't the TB side of the IC be more dense since the air is cooler, meaning it would need a smaller diameter hole to go through.

Seems contradictory.

Easy flow in --&gt; ()=/#######OMFG Backup here!\)&lt;---smaller hole increasing
Low Pres/Hi-Temp-&gt; l##########*************l Press&Temp

~~~warm ~&gt;
~~less dense&gt; ()=/#########~~(Cool, more dense, low vol)~~&gt;\) small side
~~high volume~&gt; l################################l

Nidius

NVM, it was covered already.

digitalcongo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nota-eg &raquo;</TD></TR><TR><TD CLASS="quote">

So if the smaller end is towards the TB won't that increase pressure, increasing temperature?
</TD></TR></TABLE>

it will either before or after...(aka your hot turbo air gets even hotter)
my theory is that bottlenecking the intercooler exit will cool the air more
(if you have the choice)

location location location

OH AND THERE IS GRAVITY IN SPACE
IT KEEPS THE PLANETS AROUND THE SUN




Modified by digitalcongo at 10:31 PM 8/10/2005

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by digitalcongo &raquo;</TD></TR><TR><TD CLASS="quote">my theory is that bottlenecking the intercooler exit will cool the air more
(if you have the choice)</TD></TR></TABLE>

So it's just a theory of yours and not something that has actually been proven?


Bottlenecking air isn't always a good thing. I would think that doing so would cause the intercooler to heatsoak. The only way to know for sure is to measure IAT temps pre intercooler, post intercooler and maybe even while the air is in the intercooler. Then you'll know for sure if your bottlenecking theory is correct.

digitalcongo

if you own an intercooler with one end bigger than the other...
then you have to make a choice...one way or the other...
my proposition stands to those who lack the knowledge to design their turbo system from start to end and are just piecing together what they have.
the "bottleneck" exists regardless of direction...
its not a bottleneck if it serves a purpose and matches flow of said turbo.
you are not adding air to your engine because the big side exits the intercooler...
this doesn't mean more air is leaving the intercooler...
the turbo is going to push the same amount of air regardless of direction
the design of your piping is the design of your engine
its all one system...make it work together
study more on air/fluid dynamics
i certainly do not know everything

its not just theory...its paying attention...
i'm not saying i cant be proven wrong...
i'm just saying what makes sense...
mars in gemini...action of the mind...
does that make any sense to you...?
cuz thats all that matters...

BlueShadow

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by digitalcongo &raquo;</TD></TR><TR><TD CLASS="quote">its not a bottleneck if it serves a purpose and matches flow of said turbo.
you are not adding air to your engine because the big side exits the intercooler...
this doesn't mean more air is leaving the intercooler...
the turbo is going to push the same amount of air regardless of direction</TD></TR></TABLE>

It is true that the amount of air leaving the turbo will be the same, but what about the density and velocity of that air? but what will the effect be (if any) will having the smaller end of the IC at the TB side? airflow velocity increases as piping diameter decreases, but what effect would having that 1.75" bottleneck at the IC outlet have on the air velocity and temperature before and after it? would the air behind the IC outlet because the outlet is smaller or would the air leave the outlet be faster since the IC outlet is smaller?

EDIT: also the original poster said that he has had a 1.75" inner diameter and 2.0" inner diameter endtanks on the IC. So I'm guessing the OD for the endtanks are 2" and 2.25". So in this case, the best thing to do is 2" towards compressor cause you'd want to match that side. He probably has a 2.25" dia upper charge pipe like most kits do. If he just matches up diameters then he'd only have to spend $10-$15 for two straight hose couplers instead of $40-$50 for two transition hoses.





Modified by BlueShadow at 12:30 AM 8/11/2005