I like the VS racing coolers for budget builds
Treadstone FMIC vs CX Racing FMIC *results inside*
- Thread starter Chances50
- Start date
I like the VS racing coolers for budget builds
With the OP pulley setup he should be seeing around 15 psi at 7k rpms. So there is a choking point.
Using your analogy the cloth would have more restriction which in turn would result in more pressure (boost). The screen would have less restriction and in turn result in less pressure (boost). Boost is not a measurement of force, it's a measurement of back-pressure.
The cloth (the restrictive) would have less force on the opposite end of the straw but pressure (boost) would be higher.
The screen wire (less restrictive) would have more force on the opposite end of the straw but the pressure (boost) would be lower.
So your analogy proves that if something post-blower is added and boost increases that means that a restriction was put in place. If something post-blower was added and boost decreases that means that a restriction was removed.
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Never heard of the, ill look into them thanks. What company are they from?
Something i really like about treadstone coolers is there new feature they are doing for the inlet side of the IC. They added that divider to move air to the top of the IC as well as the bottom
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It is all about where you measure.
In the straw analogy, "boost" before the cloth would be really high, but after fairly low...with the wire, they should be close to the same and therefore indicating a restriction removal.
But the question we need answered is how much it is actually cooling the charge.
The only place where the measurement matters is how much your engine is actually taking in.
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maybe my example was not complete enough, so see if you follow this.....
you have a fixed space ( the intake manifold) that has a leak ( air moving into the combustion chamber and out the exhaust) at one flow rate from the blower( the cx racing intercooler in the path from blower) you build 11 psi meaning you have more air in the space than is leaking. Now increase the flow into the space ( switching to the treadstone unit) you have even more air pushed into the space causing higher boost. You did not create a restriction you increased the volume of air.
More efficient intake/exhaust paths increase the rate that the air leaks out keeping less of the air pushed into the space in the space meaning less boost
the power pipe allows more air to be pushed into the space by the blower creating a similar scenario as a more free flowing intercooler.
Boost may by a book mean a measure of resistance, but it is more accuratley defined as air left over, be it by restricting the volume of air leaving a space or by increasing the air entering a space.
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If he had a large restriction at the inlet of the cooler and was measuring after the cooler it would be low since the pressure build up is before the intercooler. Now that the intercooler is no longer the primary resitriction the engine itself has become the primary restriction thus why he is now reading higher boost levels at the intake. Really not that hard of a concept but like most have said I wonder what the intake temps look like. I run a Treadstone TR10 which is similar to the CXRacing 3" core setup he used to run....I use a 17psi pulley combo and I currently see 17psi at the manifold. It's a matter of cheap intercooler design that caused his issue, I've seen the cxracing flow just fine or block a ton of air from getting through thus why I always say not to cheap out of stuff like this.
You're thinking into this too much. Boost is a measurement of restriction, AT THE ENGINE.
Your mouth is the blower, the straw is a pipe leading to the intercooler, and the cloth is the intercooler. You measure boost at the engine, which is after the intercooler. You blow through the straw, into the cloth which backs up air flow. This results in a lower flow rate to the engine, which would read a lower boost. Replacing the cloth with a screen(or anything that flows better) allows a higher volume of air to pass through at a faster rate, which in turn will cause a high pressure scenario at the engine.
If I was measuring my boost before the Intercooler And added the Intercooler and the pressure went up I added a restriction, but since the gauge is at the manifold it is readIng the increased boost because I removed a restriction.
Reguardless of all the BS the Car is making more power and pulls A LOT harder throttle response is more crisp. All signs that the CX cooler was a restriction.
Reguardless of all the BS the Car is making more power and pulls A LOT harder throttle response is more crisp. All signs that the CX cooler was a restriction.
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For comparisson sake I measured boost at the blower before I swapped to the tread stone and was seeing 20.5 if the new Intercooler is a restriction that number should go up so I'll hook it up there again. But im willing to put $100 that says it didn't go up...
Correct! And now it is getting more air to it which is why the manifold pressure went up.
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god this is a cluster eff of a thread.... The boost goes up and down and blah blah blah.. I think I read 1 post that has it correct in terms of how boost went UP with a less restrictive intercooler.. Good god. :nonono:
The bottom line is this...did the TR IC remove a restriction that lets more air in so much more air you see a Boost increase--which I believe is happening
StrokeMe is saying your boost went up due to a restiction increase in the system-possible but unlikely--with a bigger IC?
StrokeMe is saying your boost went up due to a restiction increase in the system-possible but unlikely--with a bigger IC?
Yeah but that's modified! I ditched mine and went with a Donathan Chromoly!Yes you can fit the 4.5" core here is my setup
I believe you, just trying to make sense of it. From experience I'm use to putting a less restrictive exhaust on my car and seeing less boost, or opening up the heads and seeing less boost. But I'm in no way calling you a liar, just trying to understand how removing a restriction after the blower creates more boost.
You do know this IS a discussion board right? I said what I thought, others say what they think, that is how a discussion works.
Look at it as if the old Intercooler wasn't letting the air the blower is pushing past so I had a ton of pressure built up between the blower and intercooler. When you remove a restriction downstream from manifold vaccum you will lower boost. But in this case the motor simply wasn't getting all the air that the blower was pushing.
Take your car for example, if you stuck a sock in between the blower and the throttle body your boost would decrease because the sock won't allow the air to get to the motor, remove the sock and now all the air the blower is pushing now has a open path to the motor where it's pressure is actually read.
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