Part 2: Reading Plugs, pistons, and valves (with Pics)

[Bob Wooten]

there are lots of good methods for applying NOS.  i belive that NOS (the
company not the product) sells what they call the progressive NOS kit. 
this is essentially a PWM controller that has both % in initially & time to
100%.  this is a great way to control the squeeze.  the other thing that
can be done is stages.  we are using 2 stages in a 68 chevelle & going 75
HP out of the hole (w/the 12:1, 420 CI SBC) & a second stage about 200'
out.  this makes for a hell of a ride & a great 60' time.  no need for
breaking things.

BW


> [Original Message]
> From: Bruce Plecan <nacelp at bright.net>
> To: <gmecm at diy-efi.org>
> Date: 12/2/00 8:14:17 PM
> Subject: Re: Part 2: Reading Plugs, pistons, and valves (with Pics)
>
> 
> Ignition is ignition.
> You want a good spark to light the reaction.
> That means energy.  Energy is both voltage and current.
> Larger gap drives min voltage high, and drops the current (there is only x
> amount of work available).
> If you have to run a large plug gap to prevent fouling with EFI, you have
a
> problem.
> Increasing the gap **can** drive the timing reguirement down (never found
> over 2d, in that on a SBC).  Also, took .050" to get that.  I've never
had a
> hipo engine run well with a .060" gapped plug.
> NOS follows all the normal rules.  No more no less.
> Just gotta be all the sharper, and willing to buy more parts, if your
> serious about adding HP.
> Bruce
>    Friends 55 bent a lower control arm with NOS, when it wheelied that
hard
> on the street, so yes I have a little clue about the stuff.   Just tend to
> stay away from it since, if anyone comes up with a proper way to meter it
in
> that would be great.  I've looked at all available and have yet to see on
I
> like.  Maybe some one will get clever with an ecm to do it, ie use two
> outputs from the ecm to do it right, ie CCP, and EGR
> 
> 
> > Bruce,
> >      Is this your recommendation for cars without NOS?  I thought
slightly
> > more gap was better if the ignition was upgraded?  I am probably wrong
as
> > usual though :-)
> > Thanks,
> > Dan
> > > Down a little in fuel, good autolites, indexed .030-.032 gap and have
> fun.
> > > If the Ignition system is up to the task.
> > > Ultimate rear end, well matter of opinion <g>
> > > remember my comment on knocking the corners off of the pistons?.  This
> > shows
> > > phase 1 on that happening.
> > > Bruce
> >
> >
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--- Bob Wooten
--- r71chevy at earthlink.net
--- 71-91 Camaro


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