Oil priming
#1
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I am priming an LQ4 block with ls3 top end. Getting oil out of the sending unit hole but can’t get oil at push rods/rockers. Help. Using the weed sprayer method.
#2
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Last edited by grinder11; 12-07-2023 at 10:22 AM.
#3
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I made my own using a 4" PVC tube from Lowes. Tube was maybe 42"-48" long. Cap one end, drilled/tapped for pipe thread, and installed a shut off valve. Hose on shut off went to the oil port on drivers side at front of the block. Drilled/tapped the second cap for quick disconnect, filled tube with 6-7qts of oil, then glued last cap on. Lowered air pressure to 45lbs. Hooked up the air, and opened the valve. Several seconds later, oil out the pushrods.....
#4
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Then it didn't work fine in my opinion. I suspect you didn't pump quite enough pressure into the sprayer, or wait quite long enough. But if motor runs fine, with good pressure, I'm sure it's good.
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blackdak318 (12-08-2023)
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#9
ModSquad
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There used to be a video floating around here of a guy with an LS on an engine stand. Dude was turning the crank by hand with a ratchet or maybe a box end wrench, and getting oil out of the rockers. Not just a little oil either. I’ll try and find it. It really doesn’t take much once the filter and all the oil passages are filled.
#10
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Years ago, after I made my PCV/air over oil primer, I had an old timing chain/oil pump drive gear laying around. I decided I'd take it to work, use an I.D. grinder to open up the I.D. so it would spin on the crank. Then I made up a strap that bolted to the the gear, and drilled a hole in the center. Then I tapped the hole. Screwed a short Allen head bolt (aka SHCS) into it. Now I could chuck the bolt head in a drill motor. Greased the crank up just a bit, and that drill motor primed the engine within 5-10 seconds!! Summit now sells the same thing I made up %##÷=/<$$-@%![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
Oh well, shoulda patented it.......
![Bang Head](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_banghead.gif)
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G Atsma (12-08-2023)
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wannafbody (12-10-2023)
#12
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My engine was a take out but i preoiled it just to be safe. I used the method I use on aircraft recip engines. Unplugged fuel injectors and coils, removed sparkplugs so it wouldnt make compression then turned the engine over using the starter. Bill
#13
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There used to be a video floating around here of a guy with an LS on an engine stand. Dude was turning the crank by hand with a ratchet or maybe a box end wrench, and getting oil out of the rockers. Not just a little oil either. I’ll try and find it. It really doesn’t take much once the filter and all the oil passages are filled.
https://ls1tech.com/forums/generatio...dry-start.html
#14
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Thanks for the advice, I will try to make it.
Last edited by CharlesWilson; 12-19-2023 at 02:12 AM.