does anyone know the valve lash for cold-tuning valves?,

so i can have the valves and the timing good enough to run as soon as the engine starts (or as close as possible) so that i can start my break in on the new cam and lifters...
thanks, keith

 

Where are the circles on the cam/crank sprocket right now? Did you move anything since lining them up?

Did you try a search? This has to be covered a gazillion times.

There are a few methods to set the lash. I've only ever used one and it's always worked for me. All the methods work. I can list it out but I bet it's already been covered.

My method involves #1 at TDC and # 6 exh and intake valves moving. Adjust the lash on #1, turn the engine over 1/4 turn and follow the fireing order. Works fine long as you don't have a super radical cam.

 

For hydraulics I generally set them with the intake manifold still off. With the lifter down, run the rocker down until you see the lifter plunger just start to move down, then go 1/2 turn down. This will get you pretty close and you shouldn't have to mess with them again.

 

https://www.thirdgen.org/techbb2/sho...setting+vlaves

try my way.

 

Good luck man!

The main reason I gave up on two motors and my poor thirdgen all together, was that no matter how carefully I thought I was, I NEVER got the vavle lash right. Or maybe I did but for some reason the rockers always loosened up. I went to great lengths to make sure the pushrods were the right length, the springs, rocker ratios, and max lift of the cam were all spec'd right and the polylocks were tightened properly.

I always tried the half and half method as described in chilton's or haynes. Adjust half, turn the motor and adjust the other half.

I guess some people (like me) just shouldn't build their own motors by hand without help from a professional (mechanic or otherwise ). It becomes very expensive to make mistakes...

P.S. my last motor is in the process of being dropped into my best friends 2000 s-10 Xtreme, and the first was revved to over 7000rpm in a modified dirt track car (I donated it to them) for one race night... then KABOOM!