Extreme changes
07-13-2006, 03:32 PM
#31
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Originally Posted by willwren
3-bar structure is the INTENSE. It'* hard to tell from my pic the opening diameter difference, but this one is easier:
Rough measurements on my screen show the larger thermostat to be a 16.7 percent increase in diameter. That'* better than a 30% increase in area (flow) assuming both thermostats open the same distance.
The car was very confused this morning. Scans were with 92 pump gas, no water injection, 60° ambient temps. First couple runs I got 10-15° of KR at mid-throttle, and 0° of KR at WOT. Very odd. Next two runs started changing to 7° of KR at mid, 10° of KR at WOT, and the last run was 5° at mid (about 7psi) and 11° at WOT. I don't think these numbers really mean anything at this point. My PCM needs some adjustment time.
Thermostat change gave me consistent 175° temps after warmup in 60° ambient air temps on the way to work. It should stay similar, maybe 185° in 100° ambient.
Rough measurements on my screen show the larger thermostat to be a 16.7 percent increase in diameter. That'* better than a 30% increase in area (flow) assuming both thermostats open the same distance.
The car was very confused this morning. Scans were with 92 pump gas, no water injection, 60° ambient temps. First couple runs I got 10-15° of KR at mid-throttle, and 0° of KR at WOT. Very odd. Next two runs started changing to 7° of KR at mid, 10° of KR at WOT, and the last run was 5° at mid (about 7psi) and 11° at WOT. I don't think these numbers really mean anything at this point. My PCM needs some adjustment time.
Thermostat change gave me consistent 175° temps after warmup in 60° ambient air temps on the way to work. It should stay similar, maybe 185° in 100° ambient.
on topic
How has the car felt (butt dyno) wise? Your temputure was 175° consistent, is that with the fan override on or not?
07-13-2006, 04:33 PM
#32
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Not with fans. But those will still be necessary at the track.
Despite the random freaky KR readings in sporadic load areas, the butt-dyno noticed an increase. This does NOT mean I'm good to go once I have the KR well controlled.
On extremely hot days, this pulley may create more heat, cancelling out any gains in power. That'* what I'm trying to figure out in the next week before WCBF. Am I going to run a 2.0" or 2.2" pulley at Woodburn.
Despite the random freaky KR readings in sporadic load areas, the butt-dyno noticed an increase. This does NOT mean I'm good to go once I have the KR well controlled.
On extremely hot days, this pulley may create more heat, cancelling out any gains in power. That'* what I'm trying to figure out in the next week before WCBF. Am I going to run a 2.0" or 2.2" pulley at Woodburn.
07-13-2006, 07:57 PM
#33
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When I was running my 2" pulley my car had a hard time with it also (stock PCM). Stock PCM still doesn't like seeing that much boost that is the only reason I have not ran the car at the track with the 2".
What was your peak boost? What was your 02 at? INT? BLM? Spark Advance?
What was your peak boost? What was your 02 at? INT? BLM? Spark Advance?
07-13-2006, 08:16 PM
#34
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Blazin, any of those numbers are almost irrelivent at this point as the PCM is still in learn mode, and will toss out numbers as it tries to find an equilibrim in the system, if it can do so.
Give it a week
Give it a week
07-13-2006, 09:49 PM
#35
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Matt nailed that one. He'* been there. The JET PCM is another variable.
My numbers are all over the map right now. Things are starting to settle in now, but it'* obvious that I won't be changing pulleys at the track. No 'learn time'. I have to know a week in advance. Tomorrow morning will show more.
I haven't hit peak boost yet. I've held it to no more than 12psi while watching KR and fuel trims. The noise is NOT what I expected. The highest pitch is higher, even at only 12psi, but it'* wierd......there'* a second harmonic now at a slightly lower frequency now. It sounds like two superchargers. One with a 2.2", one with a 2.0". Greyhare and I both heard it at lunch today.
The good news is that the extreme thermostat change was just what the Dr. ordered for a hot day and a 10% underdrive pulley.
My numbers are all over the map right now. Things are starting to settle in now, but it'* obvious that I won't be changing pulleys at the track. No 'learn time'. I have to know a week in advance. Tomorrow morning will show more.
I haven't hit peak boost yet. I've held it to no more than 12psi while watching KR and fuel trims. The noise is NOT what I expected. The highest pitch is higher, even at only 12psi, but it'* wierd......there'* a second harmonic now at a slightly lower frequency now. It sounds like two superchargers. One with a 2.2", one with a 2.0". Greyhare and I both heard it at lunch today.
The good news is that the extreme thermostat change was just what the Dr. ordered for a hot day and a 10% underdrive pulley.
07-13-2006, 10:59 PM
#36
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With your underdrive, you certainly needed the extra cooling control.
Thats whats fun about these cars, telling people..shhhh shes learning!
Ill take er for a spin Bill, and tell u what i figure, i gotta hear the harmonic Symphony of the M62 once again.
Thats whats fun about these cars, telling people..shhhh shes learning!
Ill take er for a spin Bill, and tell u what i figure, i gotta hear the harmonic Symphony of the M62 once again.
07-13-2006, 11:51 PM
#37
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Originally Posted by SSEimatt93
Ill take er for a spin Bill, and tell u what i figure, i gotta hear the harmonic Symphony of the M62 once again.
07-13-2006, 11:53 PM
#38
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worst case scenario, we pull it sunday night, im always game for an M62 pulley swap lol
