Pressure Drop of 8" JRC Intercooler
03-04-2005, 02:08 PM
#5
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Re: (kabaroo)
I just bought the 6" one, and I heard it drops about 0.5 psi at 6psi ... I think it depends on the pressure you put out of the turbo, like more psi -> more drop ... but don't quote me on that
03-04-2005, 04:41 PM
#7
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Re: (m R g S r)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r »</TD></TR><TR><TD CLASS="quote">hmm. . .pressure is pressure....maybe the cfm has an effect on it. . . 
</TD></TR></TABLE>
I just got the 8" as well. Bump For an answer!
Phil
</TD></TR></TABLE> I just got the 8" as well. Bump For an answer!
Phil
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03-04-2005, 05:21 PM
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Re: Pressure Drop of 8" JRC Intercooler (B16CRXT)
There is going to be pressure drop across any intercooler. That is what it is for. When air gets colder, it drops in pressure, when air gets hot, it expands, creating more pressure. If you get a pressure drop, it means your intercooler is working.
03-04-2005, 05:40 PM
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Re: Pressure Drop of 8" JRC Intercooler (Hoodwinked)
i like the intercooler i ran it on a evo mr, and that intercooler cools alot hot from one side and cold in another. i say buy it , just put the hose that comes out of the wastegate after the intercooler or in the intake manifold that whay u will actually get the psi u want. get me?
03-07-2005, 04:24 PM
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Re: (kabaroo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kabaroo »</TD></TR><TR><TD CLASS="quote">i didnt know he did back door IC's. focker, i woulda got me one of those instead.</TD></TR></TABLE>
Yah he started those not too long ago. I would have gotten one as well if he had them when i bought mine.
Yah he started those not too long ago. I would have gotten one as well if he had them when i bought mine.
03-07-2005, 06:06 PM
#17
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Re: Pressure Drop of 8" JRC Intercooler (Hoodwinked)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hoodwinked »</TD></TR><TR><TD CLASS="quote">There is going to be pressure drop across any intercooler. That is what it is for. When air gets colder, it drops in pressure, when air gets hot, it expands, creating more pressure. If you get a pressure drop, it means your intercooler is working.</TD></TR></TABLE>
While that is true, it isn't what is tested in the pressure drop test.
In the pressure drop test, an intercooler has forced air at ambient temperature passed through it. The air doesn't cool, so the drop test simply tests the restriction imposed by the intercooler. Thus the lower the number, the better, usually.
While that is true, it isn't what is tested in the pressure drop test.
In the pressure drop test, an intercooler has forced air at ambient temperature passed through it. The air doesn't cool, so the drop test simply tests the restriction imposed by the intercooler. Thus the lower the number, the better, usually.
03-07-2005, 06:12 PM
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Re: Pressure Drop of 8" JRC Intercooler (beepy)
you do realize that those backdoor intercoolers dont fit our cars right.... the inlet is placed right where the mounts for the bumper support is
03-07-2005, 06:56 PM
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Re: Pressure Drop of 8" JRC Intercooler (Hoodwinked)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hoodwinked »</TD></TR><TR><TD CLASS="quote">There is going to be pressure drop across any intercooler. That is what it is for. When air gets colder, it drops in pressure, when air gets hot, it expands, creating more pressure. If you get a pressure drop, it means your intercooler is working.</TD></TR></TABLE>
Not true at all. If this was a fixed volume system like air in a balloon, then yes, cooling it does cause a pressure drop. Yet because air is constantly flowing through the intercooler and being ingested by the engine, the cooling effect merely makes the air more dense(it occupies less volume instead of dropping the pressure, which you want to happen).
The pressure drop in an intercooler has to do with all the fluid friction from the large surface area inside of it. It's like blowing through a bunch of really small straws versus one big one. More surface area = more drag which manifests itself as some pressure(internal energy) of the flow going towards overcoming this drag. So you end up with a pressure drop when looking at the whole core.
Not true at all. If this was a fixed volume system like air in a balloon, then yes, cooling it does cause a pressure drop. Yet because air is constantly flowing through the intercooler and being ingested by the engine, the cooling effect merely makes the air more dense(it occupies less volume instead of dropping the pressure, which you want to happen).
The pressure drop in an intercooler has to do with all the fluid friction from the large surface area inside of it. It's like blowing through a bunch of really small straws versus one big one. More surface area = more drag which manifests itself as some pressure(internal energy) of the flow going towards overcoming this drag. So you end up with a pressure drop when looking at the whole core.
03-07-2005, 09:20 PM
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Re: Pressure Drop of 8" JRC Intercooler (wantboost)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost »</TD></TR><TR><TD CLASS="quote">you do realize that those backdoor intercoolers dont fit our cars right.... the inlet is placed right where the mounts for the bumper support is</TD></TR></TABLE>
OH NO WHAT WILL I EVER DO!?!?!!?!
I need to get a hold of Tyrus and get a refund right away. I can't believe I didn't think to measure and make sure it would fit before ordering it. God I am so stupid and you are so smart.
</sarcasm>
My CRX chasis is highly modified and not really near stock, I wont have any problems running this intercooler with the top mount turbo manifold we're building.
OH NO WHAT WILL I EVER DO!?!?!!?!
I need to get a hold of Tyrus and get a refund right away. I can't believe I didn't think to measure and make sure it would fit before ordering it. God I am so stupid and you are so smart.
</sarcasm>
My CRX chasis is highly modified and not really near stock, I wont have any problems running this intercooler with the top mount turbo manifold we're building.
03-07-2005, 09:30 PM
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Re: Pressure Drop of 8" JRC Intercooler (Def)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Def »</TD></TR><TR><TD CLASS="quote">
Yet because air is constantly flowing through the intercooler and being ingested by the engine, the cooling effect merely makes the air more dense(it occupies less volume instead of dropping the pressure, which you want to happen).
</TD></TR></TABLE>
If the air is occupying less volume, then the pressure has dropped, no?
When in boost, your charge piping is pressurized. So when air flows through it, it occupies less volume like you said, in turn creating less pressure.
If what you are saying is true, then how come when you tap your wastegate off the compressor housing, the intake manifold pressure is less than the what the turbo is spitting out? If you tap your WG off the intake manifold, then how come your turbo is actually spitting out a few more pounds then what it shows in the manifold? Where does the pressure go?
Yet because air is constantly flowing through the intercooler and being ingested by the engine, the cooling effect merely makes the air more dense(it occupies less volume instead of dropping the pressure, which you want to happen).
</TD></TR></TABLE>
If the air is occupying less volume, then the pressure has dropped, no?
When in boost, your charge piping is pressurized. So when air flows through it, it occupies less volume like you said, in turn creating less pressure.
If what you are saying is true, then how come when you tap your wastegate off the compressor housing, the intake manifold pressure is less than the what the turbo is spitting out? If you tap your WG off the intake manifold, then how come your turbo is actually spitting out a few more pounds then what it shows in the manifold? Where does the pressure go?
03-07-2005, 10:23 PM
#23
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Re: Pressure Drop of 8" JRC Intercooler (Hoodwinked)
i say hook 2 boost gauges up, on at the manifold and one at the turbo. do your own test, im sure you could borrow a friends for an hour. i thought about doing this. im definatly getting the JRC 8" though. cant beat the price and the proven performance.
i thought about doing this. im definatly getting the JRC 8" though. cant beat the price and the proven performance.
03-08-2005, 02:22 AM
#24
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Re: Pressure Drop of 8" JRC Intercooler (SP00LIN)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SP00LIN »</TD></TR><TR><TD CLASS="quote">i say hook 2 boost gauges up, on at the manifold and one at the turbo. do your own test, im sure you could borrow a friends for an hour. </TD></TR></TABLE>
God Idea
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SP00LIN »</TD></TR><TR><TD CLASS="quote"> im definatly getting the JRC 8" though. cant beat the price and the proven performance. </TD></TR></TABLE>
So true. (I just got mine)
Phil
God Idea
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SP00LIN »</TD></TR><TR><TD CLASS="quote"> im definatly getting the JRC 8" though. cant beat the price and the proven performance. </TD></TR></TABLE>
So true.
(I just got mine)Phil
03-08-2005, 03:01 PM
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Re: Pressure Drop of 8" JRC Intercooler (hondaguyef)
since there's a bit of confusion, I'll try to explain
-> volume - hot air takes more volume than cold air.
-> pressure - all the same if no change at the temperature and flow
-> flow - depends on distance and shape(diameter size, curves) of the pipping
so, since there's change in the temperature after the intercooler, the air occupies less volume, thus the pressure drops due to the continuous flow. If there was no flow, after some time the pressure would become equal all the way into the pipping, but that's not the case.
-> volume - hot air takes more volume than cold air.
-> pressure - all the same if no change at the temperature and flow
-> flow - depends on distance and shape(diameter size, curves) of the pipping
so, since there's change in the temperature after the intercooler, the air occupies less volume, thus the pressure drops due to the continuous flow. If there was no flow, after some time the pressure would become equal all the way into the pipping, but that's not the case.