I don't know if you have a vacum advance or retard, but you CAN set your
timing with a vacum guage.. Disconect vacum advance, turn dizzy til you
get mx. vacum, then retard a little. reattach advance. Works well with
worn motors ( makes up for wear ).
you can also advance for max idle ( advance disconnected ) til it starts
to miss,
then retard til it quits. ( Ear method ).
In a nut shell your right, what your seeing it not true, like you said...
john.kahoon@juno.com
71 Midget
On Fri, 19 Feb 1999 08:17:59 -0500 robert weeks <robert@woozy.com>
writes:
>Hi Paul,
>
>I am pretty sure it is not at "TRUE" 40 BTDC. That's just what I have
>to
>dial the gun to in order to get the line to line up with the pointer.
>I'm
>not too sure how the gun, the dial, and the timing all interact. The
>fact
>that it doesn't run at all at 13 or 8 or 23 BTDC I think proves that.
>I
>didn't just crank it up to 40 just because I felt like it. 40 and
>thereabouts is the only place the engine will run smoothly or at all.
>
>I tend to agree with Frank that it is probably the dizzy drive that is
>out
>by one tooth, that would explain the odd orientation of the dizzy.
>
>I'm going to work on it some more today (I took this week off from
>work to
>do this, it's cheaper than paying a mechanic ;-) I'll let everyone
>know
>what I find out.
>
>Thanks,
>
>Robert
>
>
>At 12:32 AM -0500 2/19/99, Paul A Asgeirsson wrote:
>>Whoa! Whoa! Whoa up there friend!
>>
>>Assuming that the vibration damper ring isn't slipping and that you
>have
>>the right vibration damper mounted and the pointer is the right one
>for
>>the damper, then idle at 600 RPM with the vacuum disconnected should
>be
>>about 8 degrees BTDC. With the dizzy advance, vacuum advance
>combined,
>>then at high RPM (3000-3500) the TOTAL advance should not be greater
>than
>>about 30 degrees. Timing advance+dizzy advance+vacuun
>>advance=approximately 30 degrees.
>>
>>If you have an idle advance of a true 30 degrees, you will have kick
>back
>>on the starter and will likely damage the engine when running at that
>>much beginning idle advance.
>>
>>Paul
>>PAsgeirsson@juno.com
>
>
>
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