Yeah, but the roller rockers are generally made of lightweight material,
that further reduces inertia in the valve train, allowing the valve to more
accurately follow a more radical cam profile. And as you say, this more
radial profile is less likely to stress out the guides and valves so much.
greg
----- Original Message -----
From: <GSTROM99@aol.com>
To: <glocke@ihug.co.nz>; <MrZAG57@aol.com>
Cc: <alpines@autox.team.net>
Sent: Tuesday, 14 November 2000 17:18
Subject: Re: 1600 vs 1725 / Chevy Rods / Isky / Lifters
> In a message dated 11/13/00 5:43:38 PM Central Standard Time,
> glocke@ihug.co.nz writes:
>
> > From what I understand, the rocker itself adds a little
> > extra improvement, but it's main advantage is to allow a cam to be used
> that
> > opens and shuts quicker, with the valve still being able to follow the
> > profile OK.
>
> Careful here... Roller LIFTERS allow a more radical "ramp" on the cam, so
> the lifter doesn't "dig" into the cam, and the resulting valve opening
time
> is a huge improvement. Eric is talking about roller ROCKERS. These
reduce
> friction and side stresses on the valves/guides.
>
> Gary
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