Stealth Evo Front attempt...
Admin Emeritus
Joined: Jan 2003
Posts: 2,239
Likes: 101
From: NR Reading PA
Originally posted by RA29
What a dumbass . . . painting the intercooler black.
Black absorbs heat like crazy.
Wear a black jacket out on a sunny hot day
Then wear a white or silver jacket.
I guarantee you wearing the black jacket will make you feel much hotter. Your Intercooler needs to be cool not hot.
Also as the others said, painting the intercooler reduces the heat transfer efficiency due to the paint.
What a dumbass . . . painting the intercooler black.
Black absorbs heat like crazy.
Wear a black jacket out on a sunny hot day
Then wear a white or silver jacket.
I guarantee you wearing the black jacket will make you feel much hotter. Your Intercooler needs to be cool not hot.
Also as the others said, painting the intercooler reduces the heat transfer efficiency due to the paint.
Your comments are welcomed, however, calling a member a dumbass is not.
This thread is somewhat unecumbered by the fact that the surface area of the outside edge of the heat exchanger is very small when compared to the total surface area. Consider a 6" mailing tube that has a 3" in diameter. Turn the tube around so you are looking down the tube. Now paint the edge facing you and notice the total amount of surface area you painted compared to the outside surface area of the tube. Not much huh?
Additionally, radiant heat absorbtion and heat transfer coeficient on an air-air heat exchanger are being interchanged. Can't do that.
Speedlimit....
Originally posted by xtnct
So, would one conclude that if you have anything bigger it will not really matter, well, at 70cfm anyway? Am I intrepreting the results correctly?
So, would one conclude that if you have anything bigger it will not really matter, well, at 70cfm anyway? Am I intrepreting the results correctly?
The graphs in that document go up to airflow speed of around 200 fpm, while your front grill of your car can reasonably expect to have airflow speeds around 7000 fpm (about 80 mph).
Clearly it would be premature to interpret the test results of that document as being valid at speeds of 7000 fpm -- that airflow speed is so far away from the experimental range.
Evolving Member
Joined: Jun 2003
Posts: 447
Likes: 0
From: PA
it does look alright...
as far as airflow... airflow when spoken about in such like aerospace is like/acts like a liquid... it's flow can be disturbed or routed off... for example, take a hose to screens of various sizes and see how it's affected by the smaller openings of smaller screens... you can feel that resistance in your hands... that's kinda like how the air would react when confronted with smaller holed meshing... smaller holes equal more metal/wire mesh which would impact negatively on airflow as there's more surface to impede.
The painting part? well... i do like the look of it, i must say... but, in theory you are placing a layer of material on the surface... this could possibly be looked at as, either blocking as an extra layer the cool air would have to get through to cool as intended, or, it could act like an additional coating for the heat to be exchanged out of... also, if you added the mass of the paint itself, it may also restrict at least slighty, the air that must flow through the IC to the radiator by the ducts in the IC...
It would definetly save costs on IC damage though... that i do agree... but, it might do damage in otherways, be it performance or engine reliability... heat can kill even the strongest engine... I'd just keep eye on everything, just in case... if nothing goes wrong, well, then that's great, lot's of ppl will be following suit...
but... if my IC got pretty beat up, it'd give me an excuse to upgrade to a higher/bigger model... say a Greddy 4-row, with N2O IC cooldown sprayer...
as far as airflow... airflow when spoken about in such like aerospace is like/acts like a liquid... it's flow can be disturbed or routed off... for example, take a hose to screens of various sizes and see how it's affected by the smaller openings of smaller screens... you can feel that resistance in your hands... that's kinda like how the air would react when confronted with smaller holed meshing... smaller holes equal more metal/wire mesh which would impact negatively on airflow as there's more surface to impede.
The painting part? well... i do like the look of it, i must say... but, in theory you are placing a layer of material on the surface... this could possibly be looked at as, either blocking as an extra layer the cool air would have to get through to cool as intended, or, it could act like an additional coating for the heat to be exchanged out of... also, if you added the mass of the paint itself, it may also restrict at least slighty, the air that must flow through the IC to the radiator by the ducts in the IC...
It would definetly save costs on IC damage though... that i do agree... but, it might do damage in otherways, be it performance or engine reliability... heat can kill even the strongest engine... I'd just keep eye on everything, just in case... if nothing goes wrong, well, then that's great, lot's of ppl will be following suit...
but... if my IC got pretty beat up, it'd give me an excuse to upgrade to a higher/bigger model... say a Greddy 4-row, with N2O IC cooldown sprayer...
Evolving Member
Joined: Jun 2003
Posts: 162
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From: Portland, OR soon to be Austin, TX
Would you mind me asking how you got that screen mesh to stay in there? I got some black screen window mesh and I want to put it over the intercooler area on the inside so bugs and rocks won't bend the fins on my intercooler.
Admin Emeritus
Joined: Jan 2003
Posts: 2,239
Likes: 101
From: NR Reading PA
As far as performance goes, it does not appear be very detrimental. Using xtnct's road dyno, his car (with painted intercooler and screen mesh) recorded 5 more HP than my EVO without. Go figure.
Speedlimit..
Speedlimit..
Looks like somebody giving you a big smile just after removing their dentures.
Originally posted by Tarmac Black
plus the extra paint makes it heavier. LOL
plus the extra paint makes it heavier. LOL
paint 
Newbie
Joined: Mar 2002
Posts: 14
Likes: 0
From: South OC, CA
Originally posted by Speedlimit
As far as performance goes, it does not appear be very detrimental. Using xtnct's road dyno, his car (with painted intercooler and screen mesh) recorded 5 more HP than my EVO without.
As far as performance goes, it does not appear be very detrimental. Using xtnct's road dyno, his car (with painted intercooler and screen mesh) recorded 5 more HP than my EVO without.