[Fiacco819]

So my endless search isn't paying off, so im asking you guys. Anyone know what type of roller rockers these are? Only casting's on them are "1.6" and "USA". And are these adjustable or not? When I took them off there was just the nut that was tightened down. So I'm assuming to install these, I just torque the nut down until it stops?

[horsepowerjunkie]

They look like a Crane Energizer or a copy of them. They are stud mount. Each rocker needs to be adjusted. They should have a poly lock screwed onto the stud with a allen screw in the middle to lock it down once it's adjusted.

[Fiacco819]

Ah I see, Just went out and checked and the locknut does have the allen screw in the middle. There was just oil in the hole so I couldn't tell. So in adjusting them, I should back the screw out, tighten the nut until "0-lash", then re-tighten the set screw correct? By having these mis-adjusted, could it have affected my Piston-to-valve clearances?

[horsepowerjunkie]

You want the lifter of the rocker you are adjusting to be on the cam base circle. I adjust them by screwing all the lock nuts down by hand, turn the engine over by hand until max cam lift, then rotate the crank 360 degrees and you should be on the base circlt of that rocker. Then turn the lock nut until the lifter just starts to plung, go another 1/2 to 3/4 turn and lock down. Do every rocker that way and you should be spot on!

[Fiacco819]

I read the way you do yours, and spent about 2 hours reading all across the web today, and heres what I came up with:

1] Took the springs out of two hydraulic lifters, and flipped the plungers making them "Solid rollers".

2] On the cylinder I'm working on, rotate the engine by hand until the Exhaust lifter just starts the rise, Then (0-lash) the intake Rocker. (Not turning additional because I'm checking PTV clearance). Now continue rotating engine until that same intake lifter is almost all the way down, then (0-lash) the exhaust rocker. (Not turning any additional because I'm checking PTV clearance).

Then I continued checking the PTV clearance using my check springs and feeler gauges doing the valve drop method. This time I came up with just over .115 PTV measurement on both Int/Exh which makes sense because my cam has the same duration and lift on each lobe. I feel MUCH more confident with this measurement