Date: Fri, 14 Dec 2001 09:49:53 -0800
Reply-To: steve@SYNCRO.ORG
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Steve Schwenk <steve@SYNCRO.ORG>
Subject: Re: [Syncro] Berg Vs Pauter Ratio Rockers: comments please!
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My dissents below!
> "Forhan, Thomas" wrote:
>
> I've talked to Berg and Pauter about the ratio
> rockers today, and their technical differences. Here
> is what I found out.
>
> Basic material:
> Berg: forged steel, flame hardened ends. Like VW and
> Porsche. Lifetime guarantee against breakage.
> Pauter: billet aluminium, Guarantee against
> manufacturing defects, no "usage" warrantee. For
> racing applications, lighter is a factor since there
> is less mass to accelerate.
>
> Advantage: Berg
The "lighter = better acceleration" is not limited to
racing applications, it applies here as well since we
are after better performance. Aluminum is not
necessarily less sturdy than steel. I don't know if
the answer in this application. If proper engineering
produces a lighter but just as strong aluminum rocker,
then Pauter should come out on top here as it should in
theory perform a little better because it is lighter.
>
> Rocker bearing:
> Berg: bushing type
> Pauter: roller bearing, says uses less oil and is an
> advantage for racing engines, not really a benefit
> for our application, but its the only way they make
> them.
>
> Advantage: Slight for Berg since it has so many fewer
> moving parts
Roller bearings move easier than bushings and last
longer and are stronger, no? If true, then Pauter gets
the nod.
> Pushrods:
> Berg:Pushrods .26 inches shorter than stock required
> Pauter: set is $70 additional
> Valve Cover:
> Berg - fits under stock valve cover. States that
> factory design is best, notes that bolt on covers
> tend to leak.
> Pauter - if necessary, says stock cover can usually
> can be clearanced with a ball peen hammer
>
> Advantage- very slight to Berg
This should not affect decision on rockers because it
is so incidental to performance and cost is minimal or
nothing. The CB performance covers are clip on, not
bolt on and are only $16 if people do not want to do
the ball peen hammer trick.
> Included parts:
>
> Berg:
> rocker arm assembly, lubed and ready for installation
>
> lash caps
> adjusting screws
> mounting studs
> jam nuts
> spare side play shims
>
> push rods $90 set, cut to length.
>
> Pauter:
> rocker arm assembly- uses existing mounts, nuts and
> studs
>
> lash caps $16 additional
> push rods $70 set
>
> Advantage: I like that Berg includes all the bits and
> pieces new
I again think this should not affect decision since
incidental to performance, unless all else is equal. I
would prefer to go with the pre-cut pushrods no matter
which rockers we use.
>
> Rocker arm tips:
> Berg says roller tips reduce reliability. "When
> rocker arms are properly designed to wipe against the
> valve end, there is never a need for roller tips."
>
> Pauter: roller tips, like in a Chevy V8 - "extremely
> reliable"
>
> Advantage: Who knows- call it a draw
> Price:
> Berg: $478.65 total package. No group discount-
> they may not even have 10 sets left in stock, and are
> checking. Next order being made up in Sweden right
> now.
>
> Pauter: $385 total package
>
> Advantage: Pauter
>
> .
>
> What does everyone think?
If the aluminum is established to be an inferior choice
of materials over the hardened steel, then I say Berg.
If they are of roughly equal durability and the lighter
weight of the aluminum will indeed provide some
tangible performance advantage, then Pauter with Berg
push rods seems logical.
Rainer, what do you think? I know Tim likes the Pauter
and John Wessels uses and likes the Bergs.
Thanks, Tom!
>
> Tom F.
>
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