Hello there !

I was collecting some info of the Ca/Vg solid lifters, and notice it doesn't have any hole for lubrication
in the top surface and the line arround it with the hole unlike the stock Hydro type.


SolidLifter-RB25 por Luchitosan, en Flickr


SolidLifterUnderside-RB25 por Luchitosan, en Flickr


botador h 1 por Luchitosan, en Flickr


botador h 2 por Luchitosan, en Flickr


botador h 3 por Luchitosan, en Flickr


Can it be that don't need it lubrication ?
Why ?
That doesn't wear down the cam ?

Thanks you !

There is no need for more lubrication there, everything is constantly covered in oil.. Do the stock lifters bleed oil out at the top?
If so it's a pretty logical place to bleed it out.

Just look at rb26 or 2jz, same principle.

Yea, a hydro lifter HAS to have an oil inlet and outlet, so why not place the outlet under the cam. Also, hydro cam profiles have a much higher ramp rate, and would likely cause wear to the lifter/cam without an oil film being maintained. This wouldn't be necessary with a solid cam profile.

The solid cam ramp is much more aggressive than a hydraulic one.
A solid cam would kill a hydraulic lifter.

The hydraulic cam however often have more lift than what is stated in the "specs".

2 things

1- Sorry but don't undestand what you mean/call "HIGHER RAMP RATE" ?
2- I think the stock lifters get the oil from the side line/hole and left in the top hole
so the cam is always lubricated

The lifters are lubed from the sides and oil splashed on the top. These are fine.

tommey wrote:The solid cam ramp is much more aggressive than a hydraulic one.
A solid cam would kill a hydraulic lifter.

The hydraulic cam however often have more lift than what is stated in the "specs".

You're right, I had them backwards.

Ramp rate is how fast the cam opens the valve. Think of it like a hill (or a ramp since we're talking about ramp rate ). A low angle/gradient will require less effort over a given distance, but will take longer to get to the top (hydraulic cam). A steep gradient will get you to the top faster, but the trip will be harder to make (solid cam). Because of this, a solid cam with the same duration will actually open the valve more sooner and can remain at peak lift for a longer period of time. The duration at any given lift will also be increased for a given advertised duration.

A hydraulic lifter couldn't withstand the harsh nature of a solid cam.

Thanks I couldn't translate exactly my self !
Now I know is the same rule of any "racing" cam and solid lifters.

I'm tired of hydro lifters issues I analysing made customs solids and cams just for test it
I'm not in need for reving 9k rpm only 8000 or 8200 rpm with stock rods...