Re: TOY: intro/Engine Questions

[Paul Cherubini <cherubini@xxxxxxxxxxxxxx>]

FC3S88RX7@aol.com wrote:

> So can anyone point me in the right direction? what causes an engine to be
> abnormally loud?

The #1 cause of a loud engine is excessively loose valve
clearances. The setting that quiets the engine is
.007"/011" with heavy drag (stiff sliding fit) on the
feeler gauge blades with the engine fully warmed up.
This setting is slightly tighter than the factory spec of
.008/.012" slight drag, but absolutely won't hurt 
anything. In fact, new Toyotas came from the factory
in Japan set at anywhere from .005/.009 to .007/.011
but never at .008/.012.

The .007"/011" setting also is great for good power 
and fueleconomy if used in combination with the 
factory specsettings for ignition timing and spark plug
gaps. 

Paul Cherubini