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Dougie

Valve clearance

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Dougie

I own a 2008 Malibu Response Lxi with Indmar 320 LCR engine. One of valve damaged and had to remove cylinder head for refurbishment.

Please can someone give details on where to find technical data on valve clearances for this engine.

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ahopkinsVTX

I'd try reaching out to Indmar.

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Woodski

@Dougie:  Going by the assumption your engine has hydraulic lifters, it will unless something was changed, you set to zero lash.  Here is a description on doing it: 

Bring the number one cylinder to TDC. You'll know that by the timing mark being on or near zero and if you stick a screwdriver in that spark plug hole the piston will be all the way up. Loosen the rocker arm stud on both valves and then tighten one up while slowly turning the pushrod with your fingertips. When the pushrod can't be turned then stop and adjust the nut down 1/4 to 1/3 turn more. Then do the other one on number one cylinder. Now here's why this is so easy...you can adjust more valves without turning the engine over while the motor is in the number one position. Here's the sequence...you can adjust the exhaust valves on cylinders 1,3,4, and 8. Then you can adjust the intake valves on 1,2,5, and 7. All done the same way by turning the pushrod...etc etc. Rotate the engine one full turn or 180 degrees coming back to the zero timing mark. Now number 6 cylinder is up in firing position. Adjusting the rest of the valves in this order....exhaust on 2,5,6, and 7...then the intake on 3,4,6,and 8. Once the valves are set like this just button the engine up and if you did it right they will not need touched again.

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