Zilla's rebuild (exhaust mod revealed, gauges going in.....) - Page 42 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 04-20-2007, 09:47 PM   #411
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New lifters always tick when they start up. These are Comp Cams OE lifters with half the preload of OEM lifters. They're expected to take a little while, and I was warned about this by both CompCams and ZZP.

Not sure it'* lifter tick anyway. Might be a slight exhaust leak. I'll diagnose it later, but it is getting quieter. All the lifters were ticking through the first 5 minutes or so, and it'* been getting quieter each time I drive it.

Vid shot, editing for uploading now.
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Old 04-20-2007, 09:55 PM   #412
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Cant wait
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Old 04-20-2007, 10:23 PM   #413
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Where'* the VID! Can't wait, going into convulsions!!!!!!!!!!!!!!!!
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Old 04-20-2007, 10:39 PM   #414
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Microsoft Movie Maker just locked up on me.

I'll get it going sometime tonight in the IN MOTION section. Better get this one back on topic for now.
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Old 04-21-2007, 12:32 AM   #415
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Old 04-22-2007, 04:09 PM   #416
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UPDATE:

Went after the front valvetrain today, as the stethescope pointed to the front bank for the ticking, possibly the #1 cylinder. In the process of disconnecting and inspecting plug wires, found the coil end of #3 wire was pulled partly back out of the boot, and not in full contact with the coil post.

Found nothing out of the ordinary on the front valvetrain, even after completely disassembling and reinspecting each piece. No noise there, has to be a lifter. Put it back together, and added half a bottle of Lucas Oil Stabilizer to thicken things up for the lifter'* benefit.

Took it out for a drive in lower gears than it wanted (2nd gear in a 45 zone, 3rd in a 55, up to 75mph) to hold the RPM'* high for a 5-minute drive. Power was noticably better with #3 firing consistently, and the ticking is BARELY audible at idle now. Homing in on it, and getting close to doing some scans.

On a side note, I found a bad-nasty exhaust leak coming out of the heat shield over the crossover pipe. This will be repaired probably this week if the budget permits the remainder of the exhaust work.

Katie and I are going to fix the airmix actuator on the 95 today, then take the SSEi out for some more runs.
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Old 04-22-2007, 04:18 PM   #417
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Sounds good. Glad you got that tick minimized. Are you gonna take those manifolds to a weld shop to fix?
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Old 04-22-2007, 04:19 PM   #418
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more videos too right?
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Old 04-22-2007, 04:33 PM   #419
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Yup, the crossover leak is something I experienced on my old 95. A split about 3 inches long...... KR BABY!!! Was blowing the insulation out of the heat shield.

You can see it in this pic:

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Old 04-23-2007, 11:54 AM   #420
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Car is definitely coming to me.

Lifter tick is there on cold starts only, goes away when warm now. Power is coming on. New vid from this morning'* commute to work is posted in my IN MOTION topic.

Need to get the exhaust work done so I can do some wideband checks, and I'll probably do some scans this afternoon.
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