Re: Was: Stretch bolts vs. studs... Valve springs

[Brett Van Sprewenburg <brett@netacc.net>]

>   I have to ask, what type of cam are you running?

Full profile on my car available on scirocco.org, but they're Schrick 260's.

>I would also guess the stock springs you're using are new?

No.  Had the head rebuilder check them, all within spec.  All reused 
with no problems.  I've
felt what might have been valve float at a sustained high speed in 
the neighborhood of
130+ mph and 6900+ (indicated) rpms.   The motor just seemed to go a 
bit soft at that
speed, especially after maintaining it for minutes.  (This was the 
somewhat famous 407etr
run in Canada a couple years back).  Car pulls strong to 7k+ with no 
evident 'softness'
during acceleration runs...Motronic engine management sets the rev 
limiter at 7900 anyway,
so it's no problem.

>Just wondering so I don't shoot myself in
>the foot and get a set of valve springs that end up hurting more than helping
>an engine with litle more than a cam and opened breathing.

Probably won't matter much really, get new ones if you need them. 
Running more then
the 260's, I probably would have put in HD springs.  266-268's are 
right on the cut-off
line IMO.

==Brett

>Carl
>77rocco
>89fox
>
>
>
>In a message dated 12/28/01 11:55:40 PM Eastern Standard Time,
>brett@netacc.net writes:
>
><<
> Oh, and I'm also using stock valve springs. :)  And I did just read
> tonight an old
> VW&P rag where it was mentioned that high tension springs promote valve train
> wear and actually cost a horsepower or two.  No kidding. :)
>
> ==Brett >>

 \/  '84 Scirocco (ITB racer 2B) | "Hot VW's, take two home. They're small"
\/\/ '88 Scirocco 16v (Show), '92 Passat 16v (Winter+) | - brett@netacc.net

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