[MYBAD79]

I set my timing without a timing light, engine ran fine but I wanted to get it "perfect" so I used my timing light today.... surprise: timing was approximately 25 degrees advanced with the vacuum hose disconnected and plugged :crazy:

I tried to get it to 8 degrees advanced but the engine wouldn't idle with less than 12 degrees advance.... :WTF

This is a new harmonic balancer and a 'bolt on' timing tab. When I adjusted the valve lash I checked that the balancer mark is at 'zero' when the #1 piston is at TDC.

any ideas ??

 

[grumpyvette]

a few

read these


http://www.centuryperformance.com/vacuum.asp

http://www.2quicknovas.com/happytiming.html

http://www.fourwheeler.com/howto/67578/

http://www.73-87.com/7387garage/drivetrain/timing101s.htm

http://www.mortec.com/carbtip1.htm

http://www.bob2000.com/carb.htm

http://www.hotrodder.com/kwkride/timing.html

 

[big2bird]

http://www.digitalcorvettes.com/forums/showthread.php?t=75830

Initial timing is irelevant. Total timing is.

 

[MYBAD79]

Thanks for the links, great info. I'll bookmark a few... :thumbsup:

I am just very surprised that the engine runs with that much advance. Every SB should run and idle fine anywhere from 2-12 degrees initial timing - mine does not :crazy:

I'll check it again today and see what the total timing at 2500-3000 rpm is.