Valve Spring question

[jdbubb@ix.netcom.com (Dan Bubb)]

Eric:
I think the need for the HD springs is driven by valve lift unless your
talking about a real high duration cam with radical valve accelerations
(which I don't think the Kent 278 is. Kent durations tend to be measured at
lower lifts, so their durations are generally higher for a comparable cam.).
I'm running a Schrick 274 with 11.3 mm lift using stock valve springs.
Controls the valves to 7000RPM. Colin at TT setup the cam and valve springs
initially and shimmed up the springs as much as reasonable without coil
bind. I looked, but couldn't find a Kent 278, so I don't know the lift
I don't know the actual limit, but I suspect anything over 11.3 lift is
going to need the HD springs.
No sense running a stiffer spring than you need. It's just wasting wear and
tear and lost HP.
Dan

----- Original Message -----
From: Eric S <scirocco81@vwmail.net>
To: <scirocco-l@scirocco.org>
Sent: Saturday, February 22, 2003 3:17 PM
Subject: Valve Spring question


>
> Hey all...planning on installing a Kent 278 cam on my 83 Rocco....can the
stock valve springs handle this cam?  Or do I need to upgrade to HD springs?
If so, what brands are reccomended, and who has the best prices?
>
> --
> Eric
> Northglenn, CO
>
> 81 Scirocco S (*TDI* swap and complete restoration in holding pattern)
> 81 Rabbit Truck LX Diesel (Waiting for BAE Turbo Install)
> 83 Scirocco Wolfsburg
> 91 Cabriolet (2.0 Crossflow 8v swap and mechanical rebuild in progress)
>
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