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Broken Rocker?

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Old Aug 19, 2009 | 04:19 PM
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Default Broken Rocker?
Just installed the new cam and when we started it up it ran and then broke a rocker, what could cause that?
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Old Aug 19, 2009 | 05:23 PM
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possibly incorrect pushrod length or the cam was installed wrong...
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Old Aug 19, 2009 | 05:47 PM
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Check your preload, make sure the cam is installed properly, rocker pedestal is installed, etc. all need to be looked over. Did it knock the needle bearings out or did it actually break the rocker? Did you check PTV before firing it up? What springs are you using? Let me know and I'll see if we can help determine the cause.

Jon
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Old Aug 19, 2009 | 08:05 PM
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Originally Posted by Jon@Texas-Speed
Check your preload, make sure the cam is installed properly, rocker pedestal is installed, etc. all need to be looked over. Did it knock the needle bearings out or did it actually break the rocker? Did you check PTV before firing it up? What springs are you using? Let me know and I'll see if we can help determine the cause.

Jon
It actually broke the rocker, I'm using patriot xtreme springs. It ran for about 20 seconds then it broke.
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Old Aug 19, 2009 | 08:22 PM
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Originally Posted by kinglt-1
possibly incorrect pushrod length or the cam was installed wrong...
Pushrod length is correct, can you be any more specific on what might have gone wrong so that I can fix it?
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Old Aug 19, 2009 | 09:04 PM
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Oh and also is it possible that the rocker just couldn't handle the upgraded springs and pushrods?
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Old Aug 19, 2009 | 10:04 PM
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Stock rockers are pretty stong, that should not of been the problem.
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Old Aug 19, 2009 | 10:14 PM
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Well that sucks I wish it was that easy. I'm ordered yella terra 1.7 rockers and I'm going to double check everything and hope that solves the issue.
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Old Aug 20, 2009 | 12:14 AM
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Never mind, just gonna build a new motor.
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Old Aug 20, 2009 | 12:27 AM
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What made you decide this all of sudden?
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Old Aug 20, 2009 | 12:40 AM
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Well I'm leaving for college Friday so the goal was to get the car done before then so I could drive it a couple times. Since that didn't happen and I won't be driving it for the next 8 months I figured why not just build a stroker motor.
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Old Aug 20, 2009 | 04:43 AM
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Check for coil bind, that will break them fairly quick.
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Old Aug 21, 2009 | 09:23 AM
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Originally Posted by vettenuts
Check for coil bind, that will break them fairly quick.
^^^^true story^^^^
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Old Aug 21, 2009 | 09:29 AM
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were they adjusted right? could have gotten some ptv smackage if you adjusted them 180* out
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Old Aug 21, 2009 | 03:58 PM
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why do ppl insist on adjusting rockers? u tighten them up till they seat, no matter where that lifter is on that cam lobe, it will tighten correctly. if its at the peak of the lobe, it will open the valve as u tighten.
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Old Aug 21, 2009 | 11:33 PM
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Originally Posted by 2001ws6-500hp
why do ppl insist on adjusting rockers? u tighten them up till they seat, no matter where that lifter is on that cam lobe, it will tighten correctly. if its at the peak of the lobe, it will open the valve as u tighten.
wow...what kind of advice is that?
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