Jeg's Hydraulic Lifters USA Made

[smeg]

.002-.0025"

[CamKing]

How much crown (convex) should be on a lifter to spin properly?

52"-58" Radius

[Walter R. Malik]

probably like everything else, actually made in china, final assembly here=made in America.

The law about that states ... 55% of the total product must be made in the United States of America to garner the "Made in USA" label.

I think that is about to be changed to 75%.

[CamKing]

probably like everything else, actually made in china, final assembly here=made in America.

The law about that states ... 55% of the total product must be made in the United States of America to garner the "Made in USA" label.

I think that is about to be changed to 75%.

"Made" is the key word.
What percentage of the lifter being "Made" is assigned to the raw materials, casting, heat treat, rough machining, finish machining, centerless grinding, assembly, QC, and boxing ?

Is the process of finish grinding and assembling the lifters a larger percentage then the raw material, and casting of the lifter bodies?

[BradH]

How is that % "Made in U.S.A." determined?
- by component weight % of total assembly?
- by component cost % of total assembly?
- by # of components % in total assembly?
- < fill in another option here >

"Inquiring minds want to know!"

[Walter R. Malik]

probably like everything else, actually made in china, final assembly here=made in America.

The law about that states ... 55% of the total product must be made in the United States of America to garner the "Made in USA" label.

I think that is about to be changed to 75%.

"Made" is the key word.
What percentage of the lifter being "Made" is assigned to the raw materials, casting, heat treat, rough machining, finish machining, centerless grinding, assembly, QC, and boxing ?

Is the process of finish grinding and assembling the lifters a larger percentage then the raw material, and casting of the lifter bodies?

That is certainly above my knowledge to figure out those things.
I am sure the government has some kind of outline for what that manufacturing law all means.

[Walter R. Malik]

How is that % "Made in U.S.A." determined?
- by component weight % of total assembly?
- by component cost % of total assembly?
- by # of components % in total assembly?
- < fill in another option here >

"Inquiring minds want to know!"

SO, you do the research about what that law entails and find out ... be sure to let all the "inquiring minds" know.

[PackardV8]

How much crown (convex) should be on a lifter to spin properly?

52"-58" Radius

It is hubris to ammend cams and lifters specs from a second-generation cam grinder, but there's a bit more detail to discuss.

Depending upon the engine design, lifter faces from perfectly flat, to 52", to 30" spherical radius will spin/rotate properly if matched to the specified cam lobe taper and lifter bore location in the block.

The old Storm Vulcan, et al, tappet grinders came with an Operator's Manual listing the correct setting for all then-available engine lifters; the machine had an adjustable angle with a scale from O to 8. O = flat, nailhead Buick, for example, #2 = flat tappet SBC, through #8 = 30" spherical radius; some Mopar and the Packard V8.

Obviously, the smaller the spherical radius, the more pronounced the crown on the lifters.

FWIW, the Packard V8 and early Mopar V8 hydraulic lifters we buy from Johnson are no longer supplied with the OEM 30" spherical radius. Johnson refuses to discuss why. My machinist today just grinds most all lifters on the #2 setting, regardless of what the Operator's Manual calls for; he says all the aftermarket lifters are coming that way.

[crazycuda]

probably like everything else, actually made in china, final assembly here=made in America.

The law about that states ... 55% of the total product must be made in the United States of America to garner the "Made in USA" label.

I think that is about to be changed to 75%.

Since China has bought up most of American scrap steel, I am sure they will reword it soon to made from American steel to get around more legalese. Flash backs of the old pot metal car grills etc.

[BradH]

How is that % "Made in U.S.A." determined?
- by component weight % of total assembly?
- by component cost % of total assembly?
- by # of components % in total assembly?
- < fill in another option here >

"Inquiring minds want to know!"

SO, you do the research about what that law entails and find out ... be sure to let all the "inquiring minds" know.

From https://www.ftc.gov/tips-advice/busines ... a-standard... It's not "everything" on the subject found on that link, but the excerpt below covers a good bit on my question.

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What items should manufacturers and marketers include in analyzing the percentage of domestic content in a particular product?
Manufacturers and marketers should use the cost of goods sold or inventory costs of finished goods in their analysis. Such costs generally are limited to the total cost of all manufacturing materials, direct manufacturing labor, and manufacturing overhead.

Should manufacturers and marketers rely on information from American suppliers about the amount of domestic content in the parts, components, and other elements they buy and use for their final products?
If given in good faith, manufacturers and marketers can rely on information from suppliers about the domestic content in the parts, components, and other elements they produce. Rather than assume that the input is 100 percent U.S.-made, however, manufacturers and marketers would be wise to ask the supplier for specific information about the percentage of U.S. content before they make a U.S. origin claim.

Example: A company manufactures food processors in its U.S. plant, making most of the parts, including the housing and blade, from U.S. materials. The motor, which constitutes 50 percent of the food processor’s total manufacturing costs, is bought from a U.S. supplier. The food processor manufacturer knows that the motor is assembled in a U.S. factory. Even though most of the parts of the food processor are of U.S. origin, the final assembly is in the U.S., and the motor is assembled in the U.S., the food processor is not considered "all or virtually all" American-made if the motor itself is made of imported parts that constitute a significant percentage of the appliance’s total manufacturing cost. Before claiming the product is Made in USA, this manufacturer should look to its motor supplier for more specific information about the motor’s origin.

Example: On its purchase order, a company states: "Our company requires that suppliers certify the percentage of U.S. content in products supplied to us. If you are unable or unwilling to make such certification, we will not purchase from you." Appearing under this statement is the sentence, "We certify that our ___ have at least ___% U.S. content," with space for the supplier to fill in the name of the product and its percentage of U.S. content. The company generally could rely on a certification like this to determine the appropriate country-of-origin designation for its product.

How far back in the manufacturing process should manufacturers and marketers look?
To determine the percentage of U.S. content, manufacturers and marketers should look back far enough in the manufacturing process to be reasonably sure that any significant foreign content has been included in their assessment of foreign costs. Foreign content incorporated early in the manufacturing process often will be less significant to consumers than content that is a direct part of the finished product or the parts or components produced by the immediate supplier.

Example: The steel used to make a single component of a complex product (for example, the steel used in the case of a computer’s floppy drive) is an early input into the computer’s manufacture, and is likely to constitute a very small portion of the final product’s total cost. On the other hand, the steel in a product like a pipe or a wrench is a direct and significant input. Whether the steel in a pipe or wrench is imported would be a significant factor in evaluating whether the finished product is "all or virtually all" made in the U.S.

Are raw materials included in the evaluation of whether a product is "all or virtually all" made in the U.S.?
It depends on how much of the product’s cost the raw materials make up and how far removed from the finished product they are.

Example: If the gold in a gold ring is imported, an unqualified Made in USA claim for the ring is deceptive. That’s because of the significant value the gold is likely to represent relative to the finished product, and because the gold — an integral component — is only one step back from the finished article. By contrast, consider the plastic in the plastic case of a clock radio otherwise made in the U.S. of U.S.-made components. If the plastic case was made from imported petroleum, a Made in USA claim is likely to be appropriate because the petroleum is far enough removed from the finished product, and is an insignificant part of it as well.

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Despite the guidelines above, it still seems to me that there can be some "Because we said so!" going on wrt "Made in U.S.A." claims.

OK, back to that which pays my bills...

[Old School]

How much crown (convex) should be on a lifter to spin properly?

52"-58" Radius

Thank you for the answer. For those of us who are not educated enough to convert this into inches could you explain how to get this to inches? Formula?

[rebelyell]

radii:

a radius is half the diameter of a circle.
perhaps consider following
ya know the radius (aka fillet) at each end of your crank's journal(s) ... OE crank radii are typically a rather tight 0.060" to 0.080" ... race crank radii often a broader gentler transition of about 0.125" ... the larger measured radii = a more gentle but stronger transition. If ya ground a crank with NO transition from journal surface to crank's cheek ... it would soon break in-two at that junction.

so ... think of 52" - 58" radii ... that radius is nearly 5 FEET ... a Circle (or a ball) having a radius nearly 5 FEET has Diameter of nearly 10 FEET.
Compared to gentle race crank journal radius of 0.125", That ~ 52" lifter face radius is one very gentle curve or radius!
An sbc lifter O-DIAMETER about .842" compared to a (damn near flat face) gentle curve (52" radius) spanning nearly 5 feet. Gentle indeed.

[Old School]

radii:

a radius is half the diameter of a circle.
perhaps consider following
ya know the radius (aka fillet) at each end of your crank's journal(s) ... OE crank radii are typically a rather tight 0.060" to 0.080" ... race crank radii often a broader gentler transition of about 0.125" ... the larger measured radii = a more gentle but stronger transition. If ya ground a crank with NO transition from journal surface to crank's cheek ... it would soon break in-two at that junction.

so ... think of 52" - 58" radii ... that radius is nearly 5 FEET ... a Circle (or a ball) having a radius nearly 5 FEET has Diameter of nearly 10 FEET.
Compared to gentle race crank journal radius of 0.125", That ~ 52" lifter face radius is one very gentle curve or radius!
An sbc lifter O-DIAMETER about .842" compared to a (damn near flat face) gentle curve (52" radius) spanning nearly 5 feet. Gentle indeed.

I understand the purpose of the radius. If I put a dial indicator in the center of a lifter and gently slide the lifter to the side how many thousandths should the center be higher than the edges? I would think the diameter or the lifter would be a key parameter in the formula. As "smeg" said I think it would very close to .002. for a .842 lifter. After I have been given a radii number I would like to know how to convert that into inches.

[markw]

52" radius on a .842 diameter lifter is .0017 drop. A math guy could use a formula but I just drew it in Mastercam.

[Paul Kane]

How much crown (convex) should be on a lifter to spin properly?

We have a lifter crown gauge. It's been zero'd on a flatness surface (aka "surface plate"), then place it against the face of the lifter to measure the height of the radius at the center of the crown. The 0.875" diameter Johnson Hylifts that I check all come in at 0.0031"-0.0043". While this measurement might not be a check for a consistent radius technically speaking, it has turned up a few flat-faced lifters over the years, which is exactly why we use it.

LifterGauge.jpg