Anderson Ed wrote:

I happened to be thumbing thru Racing Beats Technical Catalog last night
and notice their recommendations for ignition timing.  For 86-89 13Bs
using the stock (crank angle sensor) ignition they recommend 5 ATC at
700 rpm.  If using an older electronic distributor (pre 86) they
recommend setting it at 23 BTC at 5000 rpm.  This is because several of
the pre-86 electronic distributors had different advance curves but all
are fully advanced by 5000 rpm.

I mis understood Tracy's timing recommendations and at the time I had my
prop off had set the timing for 30 BTC at 5000 rpm (instead of
static-stop).  Since I did not want to reset timing with the prop
spinning full bore and did not want to undo all the spinner screws and
prop bolts to remove it, once I recognized my mistake I simply set it
back to 23 BTC at static which is clearly not correct.  Based on the
Racing beat recommendation it looks like I should be able to set it to 5
ATC at 700 rpm and be close. I don't mind (too much) being near a prop
spinning at only 350-500 rpm. Any reason why I should not use the 5 ATC
at 700rpm setting. Tracy? Any comments??

Ed Anderson

 
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