By GLOVERBR on Friday, November 23, 2001 - 11:14 am: Edit

WAS SHOWN RECENTLY HOW TO TIME A CAR BY VACUMN GUAGE.NEW TO ME BUT WORKED A TREAT.?.WAS WONDERING IF ANYONE ELSE HAS HEARD OR USED THIS METHOD?.

By PerroneFord on Friday, November 23, 2001 - 11:28 am: Edit

Seems pretty inaccurate to me. Not to mention not all cars use vacuum advance. Whats wrong with reading the spark in relation to the crank? Hopefully others who've seen or done this will have comments.

-P

By Kyle on Friday, November 23, 2001 - 11:39 am: Edit

It works but really isnt that accurate. You will probably get closer to your peak power that way but other things will suffer...


Kyle

By gloverbr on Friday, November 23, 2001 - 09:59 pm: Edit

kyle was wondering what things might suffer as result?

By PerroneFord on Friday, November 23, 2001 - 10:38 pm: Edit

Yea kyle, why? My G-U-E-S-S is that since there is little vacuum pulled near idle, that timing that portion using vacuum might well be difficult.

-P

By Steve on Saturday, November 24, 2001 - 02:29 pm: Edit

In the past I was involved in racing. With modified engines where the stock specks no longer were valid we would time using a tach. The proceedure was basically to find the lowest rpm at which the engine would idle, then adjust the timing for maximum idle, finally retard the timing till the idle dropped 50rpm. This would give us a good runnable starting point. Setting with a vacuum gauge, using maximum vacuum, can accomplish the same thing. Neither method should be needed with a stock engine.