Name that sound…

[tzei]

That is not a sound of too tight valve tolerances. Even 0.25 mm doesn’t sound like that. It it is valve lash thing there has to be more like 2-3 mm lash to get that sound.

[tech71]

# 3 connecting rod

[Hans]

Allen key works. Stepped feelers are better for checking your work. If you have correctly set the gaps, then on to other areas. The stethoscope to see if noise is lower in the block.

[John76]

7 hours ago, tech71 said:

# 3 connecting rod

What's the deal with #3 rod?

I have all my pistons and rods on my workbench...what should I be looking for?

Thanks,

John

[Son of Marty]

The #3 rod gets the least amount of oil in the lower end.

[John76]

5 minutes ago, Son of Marty said:

The #3 rod gets the least amount of oil in the lower end.

 

Thanks SoM,

Any suggestions on how to fix that, now that everything is apart?

[Son of Marty]

For a street car just make sure you keep the oil topped off, for more agressive driving you could look at baffling the pan and or a windage tray/oil scraper might help.

[tech71]

.

Edited August 1, 2023 by tech71

[OldRoller]

Sounds deeper than valve train noise. A stethoscope will help in general location. Typically a rod knock from excessive clearance will not diminish as it gets warm, while a piston slap will as the engine warms and expansion happens. 

Hunt that bugger down.