2056 Build Options

[yeahmag]

Installed crank, gears, cam, and rods. Dry fit CB's dry sump pump and modified the tang and clearanced drive tang boss.

[yeahmag]

I don't want to debat this too much, but this simply isn't the case. The primary problem with the method you are suggesting is that ***in my case*** the bottom of the tip (opposite the ball) is not machined to any specific tolerance. Other tips from other vendors may be different.

Additionally, you can't measure from the shoulder to the flat on the tip with that tool as the ball is smaller than the shoulder. You would be measuring on an angle... Again, that's how my pushrods and tips are. Others may be different.

The rig I used was repeatable, which if nothing else shows me variances between parts. The micrometer and it's arm is stationary and the tip and tool plate was moved in and out. I imagine Carnegie would have a hell of a lot of telescopes not working if this guy didn't know what the hell he was doing...

But in my book, building these things is half the fun. Do what works for you! I can't remember what Jake always says, but it's something like, "...this is where you become the engine builder."

[Valy]

I don't want to debat this too much, but this simply isn't the case. The primary problem with the method you are suggesting is that ***in my case*** the bottom of the tip (opposite the ball) is not machined to any specific tolerance. Other tips from other vendors may be different.

Additionally, you can't measure from the shoulder to the flat on the tip with that tool as the ball is smaller than the shoulder. You would be measuring on an angle... Again, that's how my pushrods and tips are. Others may be different.

The rig I used was repeatable, which if nothing else shows me variances between parts. The micrometer and it's arm is stationary and the tip and tool plate was moved in and out. I imagine Carnegie would have a hell of a lot of telescopes not working if this guy didn't know what the hell he was doing...

But in my book, building these things is half the fun. Do what works for you! I can't remember what Jake always says, but it's something like, "...this is where you become the engine builder."

Well, you solved the problem of the not machined bottom tip with your little jig-plate and that's fine. You should have used that plate in a micrometer.

Anyway, it doesn't really make any difference as those tolerances can be compensated at the valve adjuster and the final lift difference is smaller than the deviation you measured.

And that deviation alone is not relevant. You need to measure the assembled valve train for meaningful results.