Intercooler Effectiveness, Part II (Under Boost Conditions)
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Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
Intercooler Effectiveness, Part II (Under Boost Conditions)
I finally made it to the track since I installed my air temperature gauges (See previous post called Intercooler Effectiveness).
Temperature: 80 degrees
Humidity: 22 percent
Pressure: 28.14 inches
Before the run:
The pre-IC temp was approximately 130 degrees.
The post-IC temp was about 100 degrees.
Air temp in the plenum: 132 degrees.
After the run (WITH water/alcohol injection):
The pre-ic temp was up to 187 degrees.
The post-IC temp was 122 degrees.
Air temp in the plenum: 97 degrees (thanks to water/alcohol).
The blower put out 12 pounds of boost and I was able to run 38 degrees advance with ZERO knock retard for the duration of the run.
And for those with inquiring minds, the result of this run was a 12.21 @ 112.52 mph.
My objective for tonight was not to go all out to beat my best but to acquire scanner data. In fact, I went out in "street trim" tonight. Now, I'm very confident the blower system works well that the next time I race, I'll go in "race trim".
------------------
Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.
http://willie.camaro-firebird.org/
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
[This message has been edited by Willie (edited September 28, 2001).]
Temperature: 80 degrees
Humidity: 22 percent
Pressure: 28.14 inches
Before the run:
The pre-IC temp was approximately 130 degrees.
The post-IC temp was about 100 degrees.
Air temp in the plenum: 132 degrees.
After the run (WITH water/alcohol injection):
The pre-ic temp was up to 187 degrees.
The post-IC temp was 122 degrees.
Air temp in the plenum: 97 degrees (thanks to water/alcohol).
The blower put out 12 pounds of boost and I was able to run 38 degrees advance with ZERO knock retard for the duration of the run.
And for those with inquiring minds, the result of this run was a 12.21 @ 112.52 mph.
My objective for tonight was not to go all out to beat my best but to acquire scanner data. In fact, I went out in "street trim" tonight. Now, I'm very confident the blower system works well that the next time I race, I'll go in "race trim".
------------------
Willie
Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig) with 50-hp nitrous: 12.043 @ 112.86 mph.
ATI D1SC (10-psig): 12.056 @ 116.62 mph.
All stats are altitude corrected for 3,100 feet using NHRA's Altitude Correction Table.
http://willie.camaro-firebird.org/
1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.
[This message has been edited by Willie (edited September 28, 2001).]
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Car: 1987 Z28 Convertible
Engine: 305 TPI
Transmission: 5-speed
<font face="Verdana, Arial" size="2">Originally posted by blowen90ta:
what ratio of alcohol do you run and what type of alcohol?</font>
what ratio of alcohol do you run and what type of alcohol?</font>
Willie
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Good info ![](https://www.thirdgen.org/messgboard/smile.gif)
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Check out my Hompage,or the beginnings of one.355 dynoed at 400HP at 5800RPM & 410LBFT of TQ,on Motorhttp://www.procharged89z.cz28.com/index.html
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Check out my Hompage,or the beginnings of one.355 dynoed at 400HP at 5800RPM & 410LBFT of TQ,on Motorhttp://www.procharged89z.cz28.com/index.html
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I will be posting some temps also,only in plenum temps since I can get these of my engine moniter screen and can get them under boost with my datalog
------------------
Check out my Hompage,or the beginnings of one.355 dynoed at 400HP at 5800RPM & 410LBFT of TQ,on Motorhttp://www.procharged89z.cz28.com/index.html
------------------
Check out my Hompage,or the beginnings of one.355 dynoed at 400HP at 5800RPM & 410LBFT of TQ,on Motorhttp://www.procharged89z.cz28.com/index.html
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Willie
With the compression ratio you currently have how much boost are you going to be able to put into that engine? Ever thought about lowering it and cranking it up some more?
RMK
With the compression ratio you currently have how much boost are you going to be able to put into that engine? Ever thought about lowering it and cranking it up some more?
RMK
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Car: 1991 Firebird Formula
Engine: 383 Supercharged and Intercooled
Transmission: 6-Speed
Axle/Gears: Stock 10 bolt 3.42
Cool thanks for the info
------------------
'91 Formula
383CI Superram, Sportman II's
SLP Cam 214/224 .470/.490
Vortech V1 S-Trim with custom 8 rib pullies
5-speed
3.42
12.34@117.04, 1.91 60Ft.
on Drag Radials
------------------
'91 Formula
383CI Superram, Sportman II's
SLP Cam 214/224 .470/.490
Vortech V1 S-Trim with custom 8 rib pullies
5-speed
3.42
12.34@117.04, 1.91 60Ft.
on Drag Radials
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