ok i will pull my manual out when i get home, i haven't actually touched one
of these in a few years but if i remember they come with a line scribed on
from the factory and if i remember correctly it was actually pretty close,
it was the flywheel mark that was actually off so the timing is always off
using when you use a timing light to set it. and for those of you that
were keeping that a secret i guess i let the cat out of the bag, im not
saying they are all off but some of em are for sure.
ill get back to ya when i get home and pull out the rotax racing manual.
dan
From: Kenneth Kirkland <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: Re: [F500] 494 Rotary valve question
Date: Thu, 1 Mar 2007 09:32:43 -0800 (PST)
Dan,
A rebuilder set the timing. After pulling on the
starter cord more than 1,000 times over the course of
11 days, I'm just trying to confirm that the valve
timing is in the neighborhood of "correct" without
pulling off the oil injector system.
Thanks,
Kenneth
--- dan hester <[EMAIL PROTECTED]> wrote:
> how did you get to true t.d.c. when you put it
> together?????? and how did
> you originally line it up?? you cant trust that
> mark that is stamped into
> the flywheel from the factory i found that stamped
> mark to be off as much as
> 2 degress when using a digital gauge in the cylinder
> to get to true tdc.
>
>
> >From: "Olsonspower" <[EMAIL PROTECTED]>
> >Reply-To: [email protected]
> >To: <[email protected]>
> >Subject: Re: [F500] 494 Rotary valve question
> >Date: Thu, 1 Mar 2007 09:08:49 -0600
> >
> >Ken
> > You need to buy a degree wheel from skidoo and a
> shop manual on how to
> >use it>
> >
> > Greg
> >----- Original Message ----- From: "Kenneth
> Kirkland"
> ><[EMAIL PROTECTED]>
> >To: <[email protected]>
> >Sent: Wednesday, February 28, 2007 5:24 PM
> >Subject: [F500] 494 Rotary valve question
> >
> >
> >>Hello all!!
> >>
> >>In the course of trying to fire my problem child
> 494,
> >>a rotary valve timing question occurred to me.
> >>
> >>With the air cleaner off of a carb, throttle wide
> >>open, rotating the primary clutch counterclockwise
> as
> >>viewed from the pto end of the crank, and looking
> >>through the carb throat with a flashlight, which
> >>direction should the piston be moving when the
> rotary
> >>valve is open for a particular cylinder? The
> little
> >>bit of 2-cycle theory I know thinks the piston
> should
> >>be travelling upward to create vacuum to draw the
> >>fuel-air mixture in from the carb. It is currently
> >>travelling downward. Am I all wet, or does my
> rotary
> >>valve have serious timing issues?
> >>
> >>Profuse thanks for any and all assistance,
> >>Kenneth Kirkland
> >>#18 MiDiv / Arkansas Region (77)
> >>1991 KBS Mk. V
> >>www.kirklandracing.com
>
>
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