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powerstrokeG38R
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38 Posts
Discussion Starter #1
Has anyone done the 910 springmod? Am getting ready to orde the parts and i wasu wondering the best why to Change the spring,what shims you used ,did you put new seats in,and did you put new keeper in too?
 

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the stryker god
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3,659 Posts
They can be done with the engine in but I'd hate to know I had to do it that way. I have swamps valve spring tool and micrometer. I didn't worry with seals or retainers. Be sure to pick up some shims so you can install them at the proper height for desired seat pressure.
 

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powerstrokeG38R
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38 Posts
Discussion Starter #3
Did you put the piston top dead and blow air into it? What does the micrometer do? And am doin them bc am pulling my motor
 

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the stryker god
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3,659 Posts
No air, just tdc. The micrometer measures installed height. Your installed height determines your seat pressure. For 125 psi of seat pressure you need an stalled height of 1.78 inches. That's what the shims are for.
 

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powerstrokeG38R
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38 Posts
Discussion Starter #5
Oh okay thanks for the help!
 

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powerstrokeG38R
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38 Posts
Discussion Starter #6
One more thing by install height you mean all put back together. And you measure the length of the spring?
 
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