OK, if the springs and retainers are good, what about the rocker arms and
especially the weight of the pistons, doesnt that count at 6000 rpms?
TJ
----- Original Message -----
From: "Bob Tom" <tigers@bserv.com>
To: <dakota-truck@buffnet.net>
Sent: Tuesday, March 20, 2001 7:21 PM
Subject: Re: DML: RE: Re: RE: Re: Jet Chip vs Mopar Computer - which to
use??
> At 05:47 PM 3/20/01 -0500, you wrote:
> >In a message dated 3/20/01 5:25:07 PM Eastern Standard Time,
> >ron-wong@home.com writes:
> >
> > > You are probably right. I don't know about 92 318's. I just know
that not
> > > every Dak engine's rev limiter gets changed to 6200 going from stock
> > to HP.
> > > Mine doesn't.
> >
> >Keep in mind that just because your limiter lets you rev that high that
you
> >should wind every gear out to 6000 rpm. The reason our motors are set for
> >5200 stock is because after that our valve springs begin to play
basketball
> >with the valves, and you lose more HP due to unstable valving than you
gain
> >from the extra rpm. I changed to MP valvesprings and retainers to
alleviate
> >this problem, but even with that I don't shift after 5000 rpm.
> > Anyone wanna key in on this? -Austin
>
> That's an affirmative on the stock valve springs. I had that pleasure
> a couple of times during my first year with the truck at the track.
> Valve stems did a little tap dance on the piston heads, called valve
float.
>
> According to Kuk (KRC Performance), the MP valve springs and retainers
> are good to 6000 rpms.
>
> Bob Tom Burlington, Ont., Canada
> '97 Dakota Sport, 4x2, CC, Flame red, 5.2L, auto., 3.92SG
>
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