DeTomaso Mailing List: June 2000, Message #137

Jack,

You are correct and that is one of the reasons I did not crank in more than
1 1/4 turn of pre-load as I do not know what cam or lifters are installed.
But someday I will know!!!   If they are fast bleed lifters too much
pre-load could keep the valves from closing fully at higher RPM.

Mike


-----Original Message-----
From:	JDeRyke@aol.com [mailto:JDeRyke@aol.com]
Sent:	Sunday, June 04, 2000 4:13 PM
To:	mdailey@tectelsolutions.com; detomaso@realbig.com
Subject:	Re: Valve Noise

Remember, Crane also sells (or sold) a rip-off copy of the so-called
'fast-bleed' lifters that Rhodes first marketed. Isky also makes a version.
All these type of  hydraulic lifters make noise at low rpm, as they leak
down
and thus shorten cam duration until around 2500-3000 rpm, when they 'pump
up'
and you get the full cam capability. The clicking noise sounds remarkably
like solid lifter lash. They were popular as a way to pass Smog with
slightly
too-aggressive cams. Cheers- J Deryke