Roller lifters won't lash properly
#1
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
Roller lifters won't lash properly
I am currently in the final steps of putting my engine back together. Fifteen of the hydraulic roller lifters had absolutely no plunger movement at all causing the 1/4 turn after zero lash to open my valve rather than preload the plunger. The last one seems to lash fine. What gives?
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Its possible theyre all drained of oil. Dont know if youve done this already but back them off a turn or two and see if the pushrods can be moved up and down by hand. If not, then your going past the zero lash point without realizing it.
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
Forgot to mention, the oiling system has been primed, with oil flowing out of the lifter pushrod hole. There is absolutely no plunger movement on the fifteen, whether I try pushing on them by finger or when attempting to set the lash. If I were to back the polylocks off 2 turns after my 1/4 turn valve opening lash, there would be at least 1/8" of play between the pushrod and lifter, this is definately not a 'missing zero lash' issue.
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Oh, opposite problem, theyre full of cold oil! Set them and let it sit and the valves should close on their own as the oil drains out.
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
How long should they sit? I still think it is a different issue as the plunger is stiffer than my 1.530 OD valve springs with 100 some lbs of seat pressure in additon to one lifter seemingly lashing fine. I appreciate the input, I am just kind of reluctant to think that this is normal. I lashed two lifters with a full turn, I will see how long they hold.
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#9
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
The valves did eventually close, took roughly 2 minutes. However, I still do not think this is normal. This is what I think I am running into.
-Excerpt from Crane Cams website - http://www.cranecams.com/?show=faq&id=3
Do Hydraulic Lifters Need to be Primed with Oil?
Many people mistakenly believe that hydraulic lifters must be soaked in oil overnight and be hand pumped up with a pushrod before installing into a new engine, however this is not necessary. In fact, this could cause the lifter to act as a “solid” and prevent obtaining proper preload. What is very necessary is the priming of the entire engine’s oil system before starting up a new engine for the first time. This is done by turning the oil pump with a drill motor to force oil throughout the entire engine. Crane Cams offers oil pump primers for Chevrolet and Ford engines.
I soaked these lifters in oil 13 months ago and set them back in their bores. I have started taking them apart, cleaning them, and putting them back together and they seem to work again. I dunno if there should be oil where the spring sits, below the plunger, but they are filled. Either way, I can rest easy. Thanks for the input.
-Excerpt from Crane Cams website - http://www.cranecams.com/?show=faq&id=3
Do Hydraulic Lifters Need to be Primed with Oil?
Many people mistakenly believe that hydraulic lifters must be soaked in oil overnight and be hand pumped up with a pushrod before installing into a new engine, however this is not necessary. In fact, this could cause the lifter to act as a “solid” and prevent obtaining proper preload. What is very necessary is the priming of the entire engine’s oil system before starting up a new engine for the first time. This is done by turning the oil pump with a drill motor to force oil throughout the entire engine. Crane Cams offers oil pump primers for Chevrolet and Ford engines.
I soaked these lifters in oil 13 months ago and set them back in their bores. I have started taking them apart, cleaning them, and putting them back together and they seem to work again. I dunno if there should be oil where the spring sits, below the plunger, but they are filled. Either way, I can rest easy. Thanks for the input.
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