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ok i've been through this for a while. cracking multiple starters & multiple tranny pulls to change flexplates(breaking teeth). i've even checked clearance for the starter gear and shimmed them different ways. the new starter hasnt cracked yet but i did break a couple teeth off the flexplate already. i can get it started but it will struggle while starting and sometimes get caught or seem to "kick back" here and there. here's my question:

could this be a loose timing chain causing it to not fire at exactly the right time or my cam/valves be off just a little because of it causing my delemna? i've heard of some timing issues being the cause of breaking starters.
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94 z28 a4, 2.02/1.60 valves, cc305 cam, 1.6 Crane Gold's, Pacesetter LT's & Borla, BBK 52mm TB, K&N CAI, ported MAF, TP 4L60e, Fuddle HPS.3600 stall, MSD digital 6, 42#Injectors, Walbro 255, CSR electric WP, and a 130rwhp shot. 10.960@124.01 1.594 60'
[ Edited on 04/19/2009 @ 12:23:41 ]

What is your cranking compression?


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Welcome to the Internet, where everyone's a mechanic and has a 10 second car.

2000 Camaro SS, 6 Speed, Black/Black. Going for low 12's!
1980 Z28 - Miss ya buddy!

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Posted By: plan_Z On: 04-21-2009 @ 19:29:04     Reply | Top | Edit

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stock bottom end. last time i did a compression test it was all in the 160-170 range
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94 z28 a4, 2.02/1.60 valves, cc305 cam, 1.6 Crane Gold's, Pacesetter LT's & Borla, BBK 52mm TB, K&N CAI, ported MAF, TP 4L60e, Fuddle HPS.3600 stall, MSD digital 6, 42#Injectors, Walbro 255, CSR electric WP, and a 130rwhp shot. 10.960@124.01 1.594 60'

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Posted By: Lukn4Trbl On: 04-21-2009 @ 20:10:52     Reply | Top | Edit

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That's nothing to worry about then.

try pulling all the plugs and rotating the motor
by hand using a lever.

I'm thinking something is binding, or excessive
friction is causing the breakage (if not shimming).
--
Welcome to the Internet, where everyone's a mechanic and has a 10 second car.

2000 Camaro SS, 6 Speed, Black/Black. Going for low 12's!
1980 Z28 - Miss ya buddy!

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