collection of intercooler fin pictures (ic insides and outs)
http://www.socalevo.net/forum/index.php?topic=38152.0
Yeah, so I just noticed you were the person that gave me that link.
My ARC is comming off today, I'll clean it up and get better internal pics than what you've got...
Yeah, so I just noticed you were the person that gave me that link.
My ARC is comming off today, I'll clean it up and get better internal pics than what you've got...
Last edited by I'mStock; Mar 1, 2007 at 07:53 AM.
sounds great. ^
hey 94awd. i guess i'm askin' for the extra hks pics cuz i was alawys under the impression that they used their "hybrid" finning on the evo cores. something that i can't really make out in the pics but doesn't really actually appear to exist in this example of the hks core. there's supposed to be extruded lobefin transfer tubes PLUS internal finning... oh well.
hey 94awd. i guess i'm askin' for the extra hks pics cuz i was alawys under the impression that they used their "hybrid" finning on the evo cores. something that i can't really make out in the pics but doesn't really actually appear to exist in this example of the hks core. there's supposed to be extruded lobefin transfer tubes PLUS internal finning... oh well.
Nice little velocity stacks????
1. Those are not velocity stacks
2. Its an extruded piece of tube with with fins shoved into tube. The tube is then pinched to secure the fins inside the tube. Packed fin design.
3. The section where the tube protrudes from the header plate is not nice. Its a restriction.
4. we don't like this design because there can be spots where the internal fin doesn't make contact with the inner tube wall reducing heat transfer.
Edit: The Ebay IC (second one pictured) is not a slpit fin. Its a stamped fin w/ a short lance length setup in a staggered pattern.
3rd cooler is a wavy fin, looks to be a long lance length, and looks to be a bumped fin design, cant tell need a better photo.
4th pic is also a wavy fin design w, a high FPI.
There is also an extruded tube design that uses no fins, and a wavy fin that is split, like a garrett core.
1. Those are not velocity stacks
2. Its an extruded piece of tube with with fins shoved into tube. The tube is then pinched to secure the fins inside the tube. Packed fin design.
3. The section where the tube protrudes from the header plate is not nice. Its a restriction.
4. we don't like this design because there can be spots where the internal fin doesn't make contact with the inner tube wall reducing heat transfer.
Edit: The Ebay IC (second one pictured) is not a slpit fin. Its a stamped fin w/ a short lance length setup in a staggered pattern.
3rd cooler is a wavy fin, looks to be a long lance length, and looks to be a bumped fin design, cant tell need a better photo.
4th pic is also a wavy fin design w, a high FPI.
There is also an extruded tube design that uses no fins, and a wavy fin that is split, like a garrett core.
Last edited by EVO8emUp; Mar 1, 2007 at 12:18 PM.
Bar and plate cores are stronger than tube and fin cores, however, they are heavier.
Wavy fin design uses less material and is lighter, but the stamped fin is supposed to have better heat transfer characteristics.
Extruded tube cores have an extremely low deltaP, however, they don't transfer as much heat.
I mean, there are so many pros and cons, you could go on and on.
Long story short, there is no one best design. It all depends on the application and all applications may be different.
Wavy fin design uses less material and is lighter, but the stamped fin is supposed to have better heat transfer characteristics.
Extruded tube cores have an extremely low deltaP, however, they don't transfer as much heat.
I mean, there are so many pros and cons, you could go on and on.
Long story short, there is no one best design. It all depends on the application and all applications may be different.
you swear like the the nomenclature is well established...
correcting someone and then introducing an official term like wavy fin.... c'mon
split punched wavy bumpy lobe extruded you're being VERY VERY loose in your terminology.
there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it...
please if you're gonna come in correcting people at least use more rigorous definitions.
correcting someone and then introducing an official term like wavy fin.... c'mon
split punched wavy bumpy lobe extruded you're being VERY VERY loose in your terminology.
there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it...
please if you're gonna come in correcting people at least use more rigorous definitions.
I'm sorry the wavy fin is called "wavy fin". When I talk to the person that coined the term wavy fin, I'll let him/her know that you are not pleased.
These are the terms that I have been acustomed to here. What do we know? We sell more intercoolers and oil coolers than every company on these forums combined. And that's a fact!
We also have a sample core here that is a tube and fin, however, the tube is held into the header plate with a grommet. weird.
"there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it... "
What I meant to say was extruded tube cores (the ones with no fins) have a low deltaP but don't transfer as much heat as a core with fins.
All extruded tube means is that the charge tube was extruded. If you want to get all technical, even some of the pieces of a bar and plate cores are extruded. (face bars and header bars) Parting sheets are typically rolled.
But hey, I will tell everybody right now.. I'm not an expert.
If you want to talk to one, he charges $50 per hour.
These are the terms that I have been acustomed to here. What do we know? We sell more intercoolers and oil coolers than every company on these forums combined. And that's a fact!
We also have a sample core here that is a tube and fin, however, the tube is held into the header plate with a grommet. weird.
"there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it... "
What I meant to say was extruded tube cores (the ones with no fins) have a low deltaP but don't transfer as much heat as a core with fins.
All extruded tube means is that the charge tube was extruded. If you want to get all technical, even some of the pieces of a bar and plate cores are extruded. (face bars and header bars) Parting sheets are typically rolled.
But hey, I will tell everybody right now.. I'm not an expert.
If you want to talk to one, he charges $50 per hour.
Last edited by EVO8emUp; Mar 1, 2007 at 01:08 PM.
We sell more intercoolers and oil coolers than every company on these forums combined. And that's a fact!
I'm sorry the wavy fin is called "wavy fin". When I talk to the person that coined the term wavy fin, I'll let him/her know that you are not pleased.
These are the terms that I have been acustomed to here. What do we know? We sell more intercoolers and oil coolers than every company on these forums combined. And that's a fact!
We also have a sample core here that is a tube and fin, however, the tube is held into the header plate with a grommet. weird.
"there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it... "
What I meant to say was extruded tube cores (the ones with no fins) have a low deltaP but don't transfer as much heat as a core with fins.
All extruded tube means is that the charge tube was extruded. If you want to get all technical, even some of the pieces of a bar and plate cores are extruded. (face bars and header bars) Parting sheets are typically rolled.
But hey, I will tell everybody right now.. I'm not an expert.
If you want to talk to one, he charges $50 per hour.
These are the terms that I have been acustomed to here. What do we know? We sell more intercoolers and oil coolers than every company on these forums combined. And that's a fact!
We also have a sample core here that is a tube and fin, however, the tube is held into the header plate with a grommet. weird.
"there are extruded tubes that just have fins packed in, there are extruded tubes where the lobes are extruded and that's it... "
What I meant to say was extruded tube cores (the ones with no fins) have a low deltaP but don't transfer as much heat as a core with fins.
All extruded tube means is that the charge tube was extruded. If you want to get all technical, even some of the pieces of a bar and plate cores are extruded. (face bars and header bars) Parting sheets are typically rolled.
But hey, I will tell everybody right now.. I'm not an expert.
If you want to talk to one, he charges $50 per hour.
in that case... what were you referring to exactly? just qutoe the pics and highlight what you're trying to differentiate wtih pics of your own.
These are not velocity stacks, its the end of the tube.
It's an piece of tube with with fins shoved into it. The tube is then pinched to secure the fins inside. Packed fin design. I was just informed this morning that most of these tubes are not extruded. The section where the tube protrudes from the header is a restriction.
We don't like this design because there can be spots where the internal fin doesn't make contact with the inner tube wall reducing heat transfer.
This IC Is a stamped fin w/ a short lance length setup in a staggered/Offest pattern. The lance length is the depth of fin.
We use this type of B&P core.
This core is a wavy style / bumped fin w/ a long lance length, see how deep or
wide the fin is? We call it bumped fin because the bachine bumps the fin to get the convex/concave shape, however you want to look at it.
[/quote]This is also a tube and fin (wavy) design w/, a high FPI.
There is also an extruded tube design that uses no fins, and a wavy fin that is perforated, like a garrett core.
You can get the same results with any of these cores. The FPI, fin style and core size may change from core to core to get the same results.
We don't do performance automotive any more. Most of our business is industrial,marine and aviation. We do OTR stuff too. 99% of what we manufacture
is for diesel applications, same deal, different multiplier.
The last performance automotive product we made was for the SRT-4.
I got tired of having to explain this info over and over again, not to mention everybody seems to be the intercooler expert. I just got tired of the BS,
and the sh|t companies that would order one of our units, record the dims and sell cheap knock offs for 1/2 the price while claiming that their design flows 1200cfm w/ no pressure drop, and ppl would believe this crap.
Example of the info that we provide when producing a core:
LxWxH
External fin 6.35mm height offest, 12 fpi, 0.17mm thickness
Internal fin 3mm height, offset, 8fpi, 0.17mm thickness.
Test pressure 10bar.
This is actually the "secret info". This is what will make one core better than the other when they both look to be identical.
I have a few pics, if somebody wants to host them, I'm at work.
so, you're saying this type of core is good? because this is the same core that XSPower IC use. infact, i think the IC in the the picture is an XSPower IC or the Evo.