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nhramnl · 02-27-2020, 02:53 PM

Just a guess, but I would say so that no oil can be squeezed back out of the lifter cavity, under high valve spring pressure. With the hole blocked, the lifter would act just like a solid lifter.

02-27-2020, 02:53 PM	#2
nhramnl Senior Member Join Date: Feb 2010 Posts: 507 Likes: 8 Liked 358 Times in 83 Posts	Re: Solid lifter low oil band Just a guess, but I would say so that no oil can be squeezed back out of the lifter cavity, under high valve spring pressure. With the hole blocked, the lifter would act just like a solid lifter.