broken turbo

[Bruce Plecan]

-----Original Message-----
From: Tedscj at aol.com <Tedscj at aol.com>
Date: Sunday, December 20, 1998 9:32 PM
Subject: Re: broken turbo


Was just looking at some diacom runs from a syclone, at 675 rpm
idle, 2.0 give or take was a normal idle.  4.3L v-6 15 PSI turbo
Bruce

><< I am getting injector pulse width of 2.4 msec at 1000 rpm. This is
> more than 1/5 total width. Based on an engine that produces 200 bhp at
> around 6000 rpm this means that I am injecting enough fuel for about
> 40 hp. This can't be right.
>
> Does anyone out there know what an approximate pulse width at 1000 rpm
> would be for an engine like this one. >>
>
>For what it is worth,
>
>My engine has a PW of 2.2ms at 750 RPM.
>I think pulse widths on most engines of different sizes should be similar
>assuming the injector size to engine displacement ratio is about the same.
>And on most autos that aren't totally radical, I'd assume they are.
>Of course I could be wrong!
>
>But I was surprised to see such a large PW at idle myself, but there it is.
>
>Ted
>