Re: Knock @ 1975 RPMs

["nacelp" <nacelp@bright.net>]

> Guess its time to 'take stuff off' and see if anything changes.  Don't
> think cushioning the KS mount is something I'd want to do, sounds too
> unpredictable.

It is.  I've done one car that way (due to a cam change), and have
recommeneded it to several other guys over time, and not one negative
feedback over it.

> The knock on coast tells me its not right; you never appreciate how many
> times 2000 RPMs comes up during average driving till something like this
> happens.  Major power fade as retard kicks in.

Trust me, I know.

> Isky not (any longer?) a major manufacturer?  They sure were 30 years ago!
> Why?  Brand loyalty, more than anything; had 'em in all my 50's & 60's
> cars.  Da**, more change over the years.....}:{E

Alot has happened in opening, closing rates, and the last couple thousandths
of lift closing to avoid the valve chattering as it closes to specifically
deal with KSers.
    Other then for turbo regals, about the only two sources of cams, I trust
right now are Competition Cams, and Crane.  Comp only since I got to talk to
Scooter, and Crane just since I know so many folks that have had good luck
with them.

Cam grinding ain't what it used to be, IMHO.  Not trying to start a thread
about cams, just in response to Barrys troubles here.
Grumpy
> Thanks - off tomorrow, will check things out - Barry
>
> At 09:23 AM 04/05/2000 -0400, nacelp wrote:
> >
> >
> >If it's false knock, find the source.
> >Can be lots of different things, exhuast rattle, serpentine belt,
> >alt-P/S-A/C bearing noise.   Changing heads meant lots of stuff was
apart,
> >and even little brackets being deleted or installed differently can lead
to
> >silly arse problems that take hours to figure out.  Also, all the wear
> >pattterns can get changed, and then a noise that wasn't even there pre
> >modification, springs up.  So thinking a Alt. bearing now can't be the
> >problem, traps you into not being able to find it if it is.
> >I'd spend alot of time trying to find the problem, rather then disabling
the
> >KS, especially at that rpm range.  Mechanical fixes would be lossening
the
> >sensor slightly, or possible a more then a tad, remounting it with teflon
> >tape, remounting it on a short "coupler".
> >  Maybe with that particular setup it doesn't want much timing there.
I've
> >seen a calibration take a 12d change relative to the values around it in
> >timing to take out a "knock" after a cam change.
> >What lead ya to Isky?.  Ya know anyone running one you can compare notes
> >with?.  On the EFI stuff unless for all out racing, probably a better
idea
> >to stay with one of the major cam companies, and be conservative rather
then
> >risk, a deep hole (not meant as a flame just for others maybe considering
> >the same changes)
> >Grumpy
>
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