Procharger Intake Air Temps IAT
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Procharger Intake Air Temps IAT
I recently installed an aeroforce guage in my car
I am really obsessed with my temps now!
Just dont know what is normal?
This morning it was in the 40's outside & cruising my
intake temp was in the 50's but spiked up to 85!
Sustained full thottle. I cannot imagine what it is when
its hot out. I am running the bigger procharger intercoolers,
and 8psi boost. Probably will never run more that 11psi
or 650RWHP max. I am at 500RWHP on the Dynojet now.
I have been thinking of intalling a LT1 radiator to help my
coolent temps. So last night I took a look at my radiator
and I had some crud in it. I vacummed most of it out.
I ended up ripping out all the plastic dam. Not the bottom one.
(2pcs in front of the AC Condenser) I was thinking opening it
up would help with stop & go temps, BUT may be bad for
Air intake temp because the Intake Plenum is right above it.
I cant believe that the procharger heats the air that much.
I am really obsessed with my temps now!
Just dont know what is normal?
This morning it was in the 40's outside & cruising my
intake temp was in the 50's but spiked up to 85!
Sustained full thottle. I cannot imagine what it is when
its hot out. I am running the bigger procharger intercoolers,
and 8psi boost. Probably will never run more that 11psi
or 650RWHP max. I am at 500RWHP on the Dynojet now.
I have been thinking of intalling a LT1 radiator to help my
coolent temps. So last night I took a look at my radiator
and I had some crud in it. I vacummed most of it out.
I ended up ripping out all the plastic dam. Not the bottom one.
(2pcs in front of the AC Condenser) I was thinking opening it
up would help with stop & go temps, BUT may be bad for
Air intake temp because the Intake Plenum is right above it.
I cant believe that the procharger heats the air that much.
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It seems normal... I had a temp increase of 40-50 degrees when i was running 8psi and around 70F when i was running 13psi. I had the 3.5" intercoolers though. Do u have the plastic deflectors installed right under the intercoolers? I mean are they titled to push air upward or downward? Some people have them titled the wrong way which could make them less efficient.
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Compressing air makes heat, cant do much about it.
Why not add a methanol kit? That makes watching your IAT's very fun:
I'm not sure how useful a 25 degree IAT is, but the point is that you can drop ambient by over 30 degrees. I'm using the Alkycontrol kit, mine starts to ramp in at about 3 psi. Max boost on that graph was about 11.3 psi.
Last edited by RW99; 12-07-2006 at 12:36 PM.
#5
Ya, maybe you can explain your graph to us? That doesn't look like a boost "curve" I've ever seen. Is the time scale extremely compressed? You make 13+ psi instantly?
55 in HG/2 -14.3 or so for atm press.
Overdriven roots flipping the throttle open for a flash?
55 in HG/2 -14.3 or so for atm press.
Overdriven roots flipping the throttle open for a flash?
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Originally Posted by LSs1Power
It seems normal... I had a temp increase of 40-50 degrees when i was running 8psi and around 70F when i was running 13psi. I had the 3.5" intercoolers though. Do u have the plastic deflectors installed right under the intercoolers? I mean are they titled to push air upward or downward? Some people have them titled the wrong way which could make them less efficient.
pretty much level. I was thinking of shimming the back
of them down to catch more air.
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
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Sorry. It's just an autotap log from a little freeway driving. X scale is in seconds; Y scales are MAP in blue (inches Hg) and IAT in orange (degrees F). The boost "spike" is just me going WOT for maybe five seconds or so.
And yes, (~53 in. Hg X 0.4912) - 14.7 for the boost psi calculation. Also what the Eboost logged for max boost on that little run.
And yes, (~53 in. Hg X 0.4912) - 14.7 for the boost psi calculation. Also what the Eboost logged for max boost on that little run.
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Originally Posted by mondi2002
Yeah thet have the flaps on them but they are
pretty much level. I was thinking of shimming the back
of them down to catch more air.
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
pretty much level. I was thinking of shimming the back
of them down to catch more air.
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
My valve wasnt vented to atmoshpere at the time. I read somewhere that people had better results with them vented to the atmosphere.
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Originally Posted by mondi2002
Yeah thet have the flaps on them but they are
pretty much level. I was thinking of shimming the back
of them down to catch more air.
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
pretty much level. I was thinking of shimming the back
of them down to catch more air.
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
yeah I'd like to know if you can vent it to the atmosphere too
#11
Originally Posted by RW99
Sorry. It's just an autotap log from a little freeway driving. X scale is in seconds; Y scales are MAP in blue (inches Hg) and IAT in orange (degrees F). The boost "spike" is just me going WOT for maybe five seconds or so.
And yes, (~53 in. Hg X 0.4912) - 14.7 for the boost psi calculation. Also what the Eboost logged for max boost on that little run.
And yes, (~53 in. Hg X 0.4912) - 14.7 for the boost psi calculation. Also what the Eboost logged for max boost on that little run.
I have some non-intercooled logs from a carbureted car, but I doubt anybody is interested in that here. I currently measure SC inlet, hat and plenum temps. So far the carburetor is pulling over 90 degrees out of the air at max boost. This is a similar phenomenon that could be experienced by methanol, though injected methanol is going to be at a lower volume.
Rolling down the road the fuel will drop the temp in the plenum below inlet. The SC adds about 20-30 degrees to the inlet temp depending on how fast I'm driving and the blower is spinning.
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Originally Posted by Mark98SS
Those twins don't get a whole lot of flow & the total surface area is pretty small. A 12x24 front mount will drop the IATs by 30-40 down the track.
May be able to fit one in front of the Air dam.
#15
I have yet to see any definitive back to back tests on the twins vs. a front mount. The twins work much better than many give them credit for. The F-body is a bottom breather and they get substanitial air. Even high output "blue fans" can't come close to match the air volume and velocity of on road/track use. I want to see some data on pre I/C and post I/C temp with both setups, and not just factory OBDII IAT data from one point.
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Id like to see a comparision of the NEW STAGE II kit twin intercoolers that are sheetmetal and 4.5"
About to put that kit on my zo6. I think belt slip problems have been totally eliminated with this new kit as well.
About to put that kit on my zo6. I think belt slip problems have been totally eliminated with this new kit as well.
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Originally Posted by andereck
I have yet to see any definitive back to back tests on the twins vs. a front mount. The twins work much better than many give them credit for. The F-body is a bottom breather and they get substanitial air. Even high output "blue fans" can't come close to match the air volume and velocity of on road/track use. I want to see some data on pre I/C and post I/C temp with both setups, and not just factory OBDII IAT data from one point.
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Originally Posted by andereck
I have yet to see any definitive back to back tests on the twins vs. a front mount. The twins work much better than many give them credit for. The F-body is a bottom breather and they get substanitial air. Even high output "blue fans" can't come close to match the air volume and velocity of on road/track use. I want to see some data on pre I/C and post I/C temp with both setups, and not just factory OBDII IAT data from one point.
I can give you an answer on this once everything goes back together. I can leave the same pulley i had on the blower just for a few runs to log in the IAT. We were reaching 140F in 70F ambient at 13psi. We will see what the IAT increase with the FMIC.
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Originally Posted by mondi2002
Would venting the bypass valve to the atmosphere help?
What size filter would I need for the extra spot on the hat?
What size filter would I need for the extra spot on the hat?
YES!!!
Venting to the Atmoshere, helps normal driving IAT's A LOT!
As others have stated the trade off is the sound. It's a bit louder with the air rushing around. I place filters on the ends of the Bypass valve, not to keep the dirt out (cause it's always blowing out) but to just hush the sound a bit on street cars.
Most people plug the hole in the hat with some form of rubber cap. Or take a peice of hose, then place a metal plug in the end of the hose.
Hope that helps,
EA