Hey my Chevy has Ford Rods !!!!!!

[The Dupuis]

The piston moves faster at the bottom half of it's stroke.  Do a model in
AutoCAD or something like it to see - the long rod moves slower in the top
half but faster in the bottom half.

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of The Punisher
> Sent: January 7, 2002 11:33 PM
> To: diy_efi at diy-efi.org
> Subject: RE: Hey my Chevy has Ford Rods !!!!!!
>
>
> Huh??  I always thought that longer rods would allow the piston to dwell
> longer at the end of the stroke (top and bottom) and therefore
> have a higher
> speed while traveling up and down. How can it dwell longer at the top AND
> move slower too??? did I just mis-understand you or am I missing
> something
> here ?
>
>
> >Anyway, I think the point of the long rod comparison is that the
> piston is
> >closer to TDC for longer, and it's moving slower at every point
> between +/-
> >90* from TDC.  This causes less heat build-up in the charge, and because
> >the
> >piston is moving slower at the top of the stroke it gives the expanding
> >gases more time to fill the slower-expanding combustion chamber.
> >Obviously,
> >the slower piston speed means less vacuum therefore less intake
> charge, but
> >by adjusting the valve events to suit (wider lobe separation,
> for one) this
> >can be compensated for.  Also, because the piston is moving slower at the
> >top half of the stroke, there is less chance of rod failure due
> to "toss".
> >As you mentioned, the side loading is lower too, so less power
> is lost due
> >to friction and theoretically better piston wear AND better ring wear.
> >
>
> _________________________________________________________________
> MSN Photos is the easiest way to share and print your photos:
> http://photos.msn.com/support/worldwide.aspx
>
> ----- End of forwarded message from owner-diy_efi at diy-efi.org -----
> ------------------------------------------------------------------
> ----------
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without
> the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>

----- End of forwarded message from owner-diy_efi at diy-efi.org -----
----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org