Subject: Rough Running 13B
From: Paul
Date: 2/25/1999, 9:56 AM
To: z

Tracy Crook wrote:


Anderson Ed wrote:

Thanks, Tracy.

Glad I asked the question and I will certainly go back and read the
installation specs.   For some reason, I must have interpreted the
"Igntion system input" spec of 30 degrees BTDC as the spec for setting
the spark for 30 BTDC at 5000 rpm.  Which I did when I had the prop off
because I did not want to be that near the prop spinning at 5000 rpm.
However, this screw up on setting the spark timing may also account for
some of the missing power.  So will recheck the specs and reset to 23
BTDC on the spark at 5000 rpm.  Now to make certain I understand, I set
the distrubitor so that the leading coil fires when the main pulley is
at 23 BDTC, right?

Ed



Yes, that's the target.  This is complicated by the fact that the two
factory marks on the E-shaft pulley are at 5 ATDC & 20 ATDC.  Measure
carefully and make a new mark at 23 BTDC.  If you are not using the stock
one, the aftermarket (Racing Beat) pulley has 4  markings  but I forget what
they are.  One of them is TDC and the others are at 10 degree intervals.

Tracy Crook   rws@altavista.net


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