valve setting

Z-man · Sep 10, 2013

can someone tell me the process of setting the valve on a z129 engine, the ones I have sat for some time and just what to make sure they are set rite

Jason S. · Sep 11, 2013

The old way of setting valves was bring each cylinder to top dead center on the compression stroke and adjust the valves to .013" hot or .015" cold. Ferguson recomended setting the valves while it was running.I use the more modern method which is more accurate and assures that the lifter is on the backside of the cam when you set the lash. Do one cylinder at a time. Start with the first cylinder,turn the motor over until the exhaust valve starts to open and adjust the intake valve. Then turn the motor until the intake valve has opened fully and is almost closed and adjust the exhaust valve. Then proceed to the next cylinder.

gshadel · Sep 11, 2013

The way Jason suggests is good. "cold" means room temperature. "hot"means running the engine for at least 20 minutes at a fast idle. I can tell you from experience that checking the tappet clearance on a hot running engine is a bit on the messy side and a bit of a nerve racking tedious job. If you do a good job with the cold setting, turning the engine over several times and re-checking to make sure the tappets are still good, then you don't really need to do the hot check also... unless you just want the experience.

George

valve setting

Z-man

Member

Jason S.

Well-known Member

gshadel

Member

Similar threads