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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Rocker assembly not flush

Old Dec 30, 2025 | 09:45 AM
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Funkyfrguy's Avatar
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Rocker assembly not flush

I am going to bolt my rocker assembly to cylinder and it is not completely flush. If I push one side the other moves up. I do have cam dowel at tdc. Seems like If intrigue the head bolts down I will bend something. Thanks.
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Old Dec 30, 2025 | 10:48 AM
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No matter where you have the cam positioned, some of the valves are going to be open.
This means that that those valves rockers will be standing on their cam lobes and forcing those valves springs to compress.
This is why the rocker assembly will not lay flat.
Tighten all the head bolts little by little until all the rocker towers come flat onto the head.
The force required should be minimal.
It IS important that both the cam and crank are set correctly in relationship to each other, or there is risk that open valves could interfere with an improperly positioned piston and be damaged.
Once its down flat, you can torque it down in several steps, using the correct bolt sequence.

Last edited by millball; Dec 30, 2025 at 02:40 PM.
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