 Why did my rockers break? 6 cylinder |
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| David Stowers |
 May 16 2022, 09:32 AM
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Member  Group: Members Posts: 99 Joined: 28-June 12 From: UK Member No.: 14,613 Region Association: None  |
Hi all,
All 3 exhaust rockers broke on one side (4,5,6) when I started my engine for the first rime after cam and rocker re grind. What’s the likely cause here folks? Thank you |
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| mb911 |
May 16 2022, 04:31 PM
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#2
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914 Guru Group: Members Posts: 7,560 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest 
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Ugh what a sick feeling. My guess is wrong cam timing and could the down have been missed when timing that cam or forgot to TQ the cam nut?
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Posts in this topic
David Stowers Why did my rockers break? 6 cylinder May 16 2022, 09:32 AM
Superhawk996 Lots of possibilities. None of them good.
I... May 16 2022, 09:38 AM
David Stowers
Lots of possibilities. None of them good.
I... May 16 2022, 09:42 AM nditiz1 At what point did they break?
Did the cam timing ... May 16 2022, 10:02 AM brant I've been told in the past that some year of T... May 16 2022, 10:52 AM porschetub
I've been told in the past that some year of ... May 16 2022, 07:03 PM rgalla9146 :agree: all of the above.
Consider yourself a... May 16 2022, 04:02 PM euro911
:agree: May 16 2022, 05:04 PM fixer34 Assuming the pistons hit the exhaust valves while ... May 16 2022, 05:44 PM r_towle The valve hit the piston.
Either valve timing or c... May 16 2022, 06:07 PM sixnotfour Bad News, you bumped cast pistons.... May 16 2022, 09:07 PM mepstein cam timed 180 degrees out? It happens. May 16 2022, 09:19 PM sixnotfour
cam timed 180 degrees out? It happens.
:beer2: May 16 2022, 09:44 PM Retroracer Like @FIxer34 suggested, missing or sheared cam ... May 17 2022, 07:18 AM burton73 Cam timing on my 6
This is not so easy and you ... May 17 2022, 10:43 AM sixnotfour Many shops have the tools ,but have done 180 out a... May 17 2022, 08:15 PM Luke M Have you checked the valve to piston clearance ? T... May 18 2022, 08:13 AM ClayPerrine I have lots of experience with setting the cam tim... May 18 2022, 11:04 AM Jake Raby
I have lots of experience with setting the cam ti... May 18 2022, 08:01 PM |
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