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Priming the oil pump (pre-install)

Posted By DANIEL TINDER 2 Months Ago
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DANIEL TINDER
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Y-Block book instructs to flood & then turn the gears, but with the motor on a stand upside down, it looks like the oil would just run out. I'm wondering if only lubing the gears would be enough, since I plan to throughly prime the engine with a drill before first start regardless (?).  I certainly would like to avoid turning the motor over to install the pump.

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KULTULZ
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Big Tim
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Make sure the gears are nice and oiled. Then prime the motor with the drill as you were planning.
The oil that's on the gears should seal enough to create a suction that should pull oil from the pick up.

DANIEL TINDER
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Big Tim (7/13/2026)
Make sure the gears are nice and oiled. Then prime the motor with the drill as you were planning.
The oil that's on the gears should seal enough to create a suction that should pull oil from the pick up.



I was thinking of using the 50/50 mix of oil & STP I have prepped for assembling the valve train, since would be less likely to run out and make a mess before I actually get the pump installed.


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55blacktie
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If you're using STP (unless the formula has changed over the years), I hope you're working in a clean, dust-free environment. The stuff is sticky. 
KULTULZ
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I was thinking of using the 50/50 mix of oil & STP I have prepped for assembling the valve train


Just wondering, are you going to use this mixture for cam lobes and followers break-in also?



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DANIEL TINDER
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KULTULZ (7/13/2026)
I was thinking of using the 50/50 mix of oil & STP I have prepped for assembling the valve train


Just wondering, are you going to use this mixture for cam lobes and followers break-in also?


No, just pushrod ends, rocker tips/shafts, etc.  


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KULTULZ
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DANIEL TINDER
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KULTULZ (7/14/2026)


I usually take seller’s product recommendations with a grain of sand. I had to laugh though, when they talk about their lube’s ‘stickability’. Nothing sticks like STP. The damn stuff is nearly impossible to clean off 😁!


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KULTULZ
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No, the reference was meant to describe using ASSEMBLY LUBE in the engine before first fire.

STP is (was) a quick can of compression and/or low oil pressure correction.


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