Dynoed today...sucks...:-(
02-20-2008, 09:42 PM
#41
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Found the squeak,,,
went for a test drive tonight, about 10 mins into it the squeak got real bad, then the belt broke
.. Luckily I was able to make it home..Jacked it up and spun all the pulleys by hand, the sprung tensioner I couldn't spin at all and the idler/manual tensioner on the head unit is real rough when you spin it..Wonder if the tensioner was sticking at high speed causing the sputter/surging...Damn, gotta pull the steering rack to replace it too 
Chris
went for a test drive tonight, about 10 mins into it the squeak got real bad, then the belt broke
.. Luckily I was able to make it home..Jacked it up and spun all the pulleys by hand, the sprung tensioner I couldn't spin at all and the idler/manual tensioner on the head unit is real rough when you spin it..Wonder if the tensioner was sticking at high speed causing the sputter/surging...Damn, gotta pull the steering rack to replace it too Chris
02-20-2008, 10:20 PM
#42
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02-21-2008, 07:13 PM
#43
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well got the sprung tensioner off. When the belt broke it rode on the balancer leaving a little lip on it that made it feel locked. Once I cleaned it up it spun fine..Oh well, I have the old black anodized aluminum one and Chris at ECS is sending me there new updated steel one..
Now the manual tensioner idler feels real sticky and rough. Makes noise when spun by hand. I'm going to replace it for sure. All the other pulleys feel great. Hopefully that was my squeak. I started the motor without the belt and it sounded perfect..So its not a loose cam bolt
or AC clutch...All the parts should be here tomorrow. So hopefully a test drive Sat or Sunday to see if its sorted out. I also ordered new wires and the comp cams spring shim kit so I can shim my springs to a little higher seat pressure to see if it might have been valve float as well...
Now the manual tensioner idler feels real sticky and rough. Makes noise when spun by hand. I'm going to replace it for sure. All the other pulleys feel great. Hopefully that was my squeak. I started the motor without the belt and it sounded perfect..So its not a loose cam bolt
or AC clutch...All the parts should be here tomorrow. So hopefully a test drive Sat or Sunday to see if its sorted out. I also ordered new wires and the comp cams spring shim kit so I can shim my springs to a little higher seat pressure to see if it might have been valve float as well...
02-24-2008, 08:37 PM
#44
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Well guys, Just went for a test drive.. 
18psi of boost..I think I need to change my shorts 
Crazy fast... Still not sure what the problem was. I think it was valve float, not spark related. But I didn't test them 1 at a time. I did all the changes all at once. Shimed the springs to roughly 155lbs on the seat, changed my spark dwell time and new plug wires..Pulls clean(except for a little wheel spin) to 6400rpm and I ran out of road.. 
Redyno this week...
18psi of boost..I think I need to change my shorts Crazy fast... Still not sure what the problem was. I think it was valve float, not spark related. But I didn't test them 1 at a time. I did all the changes all at once. Shimed the springs to roughly 155lbs on the seat, changed my spark dwell time and new plug wires..Pulls clean(except for a little wheel spin) to 6400rpm and I ran out of road.. Redyno this week... 
02-24-2008, 10:34 PM
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I think I'm going to take it easy until I fell comfortable with it. Plus my daughter's 1 year birthday party is Sat. My parents are coming from Florida and I have a very long list of things I need to get done around the house before then..I didn't get anything done except car stuff this weekend... 
02-26-2008, 06:35 AM
#51
Well guys, Just went for a test drive.. 18psi of boost..I think I need to change my shorts Crazy fast... Still not sure what the problem was. I think it was valve float, not spark related. But I didn't test them 1 at a time. I did all the changes all at once. Shimed the springs to roughly 155lbs on the seat, changed my spark dwell time and new plug wires..Pulls clean(except for a little wheel spin) to 6400rpm and I ran out of road.. Redyno this week...
18psi of boost..I think I need to change my shorts Crazy fast... Still not sure what the problem was. I think it was valve float, not spark related. But I didn't test them 1 at a time. I did all the changes all at once. Shimed the springs to roughly 155lbs on the seat, changed my spark dwell time and new plug wires..Pulls clean(except for a little wheel spin) to 6400rpm and I ran out of road.. Redyno this week...
04-01-2008, 09:00 PM
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See those 2 welds next to the reluctor wheel...I think(hope
) that is the cause of my high rpm stumble... They are pretty high and right next to the crank pickup...If knocking those down doesn't fix my stumble I'm going to burn the car to the ground... 
04-01-2008, 10:32 PM
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This guy Nicky Boy over at Hp tuners had the same problem. Turned out to be a crank sensor. Even a vid of it doing it at 16psi. Here is his threads.
http://www.hptuners.com/forum/showth...t=crank+sensor
http://www.hptuners.com/forum/showthread.php?t=16041
http://www.hptuners.com/forum/showth...t=crank+sensor
http://www.hptuners.com/forum/showthread.php?t=16041
04-01-2008, 10:45 PM
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This guy Nicky Boy over at Hp tuners had the same problem. Turned out to be a crank sensor. Even a vid of it doing it at 16psi. Here is his threads.
http://www.hptuners.com/forum/showth...t=crank+sensor
http://www.hptuners.com/forum/showthread.php?t=16041
http://www.hptuners.com/forum/showth...t=crank+sensor
http://www.hptuners.com/forum/showthread.php?t=16041
04-02-2008, 07:09 PM
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Also thanks to Dave at Canadian Performance Engines for talking to me today. He thinks this could have been the problem as well. If it doesn't work, he wants me to try a crank relearn with a GM TechII and see if that might help as well..