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06-21-2005, 11:19 PM
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#1 |
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needin' money
Join Date: May 2005
Location: Chickasha, Oklahoma
Posts: 1,106
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what is it?
what is preloading the lifters, and how do you do it?
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06-22-2005, 01:15 AM
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#2 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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If you are talking standard hydraulic tappet lifters, it bascially is filling the lifters up with oil before you install them into your engine so the engine achieves full oil pressure as quick as possible when you start it up for break in.
In all reality, it really isn't nessessary, but it is worth the extra time as far as I am concerned. To preload them, simply put them into some fresh, clean oil, and let them fill up with oil. I just stuck mine into a clean container full of oil, and let them sit there overnight (oil is pretty thick, so the air may need some time to work its way out). After that, use the same oil to lubricate the lifter bores, and slide the lifter (with break in fluid on the bottom and sides) into their bores.
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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06-22-2005, 02:55 AM
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#3 |
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california fill
Join Date: Apr 2004
Location: Sunny So-Cal
Posts: 694
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or it could mean setting the valve lash... preload is usually a term for how much tension is put on a bearing.. in this case, how much tension is put onto the lifter after zero lash (1/2 turn after zero lash outta be good)
just a thought... pc |
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06-22-2005, 07:11 AM
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#4 |
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White 82
Join Date: Feb 2004
Location: Eustace, Texas
Posts: 100
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 but i preset mine with about a 1/4 turn with the intake off so i can see whats going on hand turning it several times
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1966 GTO 455 e-heads, 1982 Chevy k10 4'' lift 33’' tires, 2008 Pontiac g6 v6 |
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06-22-2005, 10:01 AM
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#5 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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Ah, thats right, could be setting the lash too
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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06-26-2005, 05:56 PM
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#6 |
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needin' money
Join Date: May 2005
Location: Chickasha, Oklahoma
Posts: 1,106
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what if you pre-oiled the oil pump with the oil pump primer, would that do the same thing
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06-26-2005, 07:25 PM
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#7 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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yep, it should!
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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