Broken Rocker Arms
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From: Philly Area ----- George Washington took a dump in my backyard!
Broken Rocker Arms
Had to replace the chain to block gasket on the left side and managed to knock the cam timing way out of spec, things just didn't sound right after I put it back together, so I dropped the engine last week.
It looks like I'm lucky that only the rockers broke!
It looks like I'm lucky that only the rockers broke!
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From: Philly Area ----- George Washington took a dump in my backyard!
Shawn
I certainly hope so!
I'll have to talk to my club experts to see how to check for any other damage.
Gonna do a compression and leakdown test.
I certainly hope so!
I'll have to talk to my club experts to see how to check for any other damage.
Gonna do a compression and leakdown test.
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From: Deep Downtown Carrier, OK
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Nordschleife Master
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From: not in HRM
The 964 motor is an interference motor , that all three broke tells me that the pistons kissed the valves .
Long ago my father bought my brother a rebuilt 356 motor for my brother .
My brother and I went and picked it up from the rebuilder , when we got it home we put it up on the bench and tried to turn it over by hand , it would turn up to a point then lock up , we could turn it pretty far in the other direction until it locked up again . This was before my first car , before I really knew anything about anything . I thought that it locked up like that was wrong but I really had no clue why we could turn it back and forth so far before it would lock up hard .
Looking back I can see that the guy who bebuilt it never spun the motor before he sold it . He sent it out the door with a fatal flaw .
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Nordschleife Master
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From: Deep Downtown Carrier, OK
I don't think so . If you screw up the valve adjustment such that the valve is held off the seat
But in this case the OP bumped the cam timing off, we don't know which direction, but can deduce...
But in this case the OP bumped the cam timing off, we don't know which direction, but can deduce...
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From: not in HRM
I gave an example of the valve being off the seat that is common and does not lead to broken rocker arms .
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From: Vancouver Island, BC , Canada
It seems to me, for all 3 rockers to break, there must have been something stopping the valves. "PISTONS" !!!!!! Sorry to say Louz, but that would be my first guess, and if that is the case, you will also have bent valves.
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From: Roseville, CA
Or zero. Basically what happened with all the Day One-to-3.2L cars when a tensioner laid down. Pop heads off, replace guides, surface heads, replace whatever valves are bent, reassemble............