mikewoodkozar

I have an 84 GSL 12A, running STRONG with 55,000 miles on the clock. In the last few months i have added all sorts of stuff to make this great car even more fun. BTW i love this car. I put in a RB streetport header mated to a straight exhaust and an APEXi N1 muffler (yes it is loud, but i drive this car about once a week so it is still fun). I put on a big airfilter assembly that replaces the stock piece and while i was at it, i removed the rats nest. Then last night i put in the MSD 6A direct fire setup with 3 blaster 2 coils. Also new fuel filter, new dis cap, rotor and new spark plug wres with NGK plugs. Sigh, sorry about all the prelude to the questions, but i wanted to give you guys something to work with. Okay, i would like to get the most out of the setup, and i have seached and read many threads about the timing setup of 24 degress leading and 16 degrees trailing advanced. The questions i have are: Number one, when i set for this timing, all adjustments are made at idle, or at 4000rpm (i read somehere something about 4000rpm timing tuning)? If i am too freaked out about doing this, can i take it to my local rotary mechanic (he has been working on rotarties for 20+ years) and say "set the timing advanced to 24 degrees leading and the trailing to 16 degrees adavance" And he will know what going on, is this pretty straight forward? And finally, are there any downsides to this setup? And really what is to gain, whats this timing setup going to do for me?

Eatdust

The reason that the timing is set higher in the rev range (I think this should be done under load on a dyno? anyone???) is so that you get the maximum total advance, after both the mechanical and vacuum advance have had their effect, this is so you don't accidently run too much advance high in the rev range and cause pinging. If after you have set the max adance & find that the advance is too low at idle (it would have to be very low to cause big problems), you may have to have the dizzy regraphed or at least new springs put in it.

If you have any trouble you should do what is done on race bridgeports over here - weld the mechanical advance solid, disconnect the vacuum and the just set the advance at idle to your maximum total!!

Advance sounds ok, but I would have to look up my reference books.

mikewoodkozar

Thanks for the info, Anybody else running this timing setup?

mikewoodkozar

come on somebody knows whats going on.

mikewoodkozar

please

BMS2004

I have my timing set to 22degrees at full advance. To do this is easy. if you have the stock pulley its a cakewalk. the stock pulley is 360mm in circumference so each mm is 1 degree. anyways put a flexible ruer on it and measure where you want it. I can't remember off hand where the leading mark is. I'm thinking 0 degrees but i won't promise that. When you go to set timing remove the lines from the vacuum pods on the dizzy. Then rev it up untill the mark stop moving. 4k is a safe number then adjust as need be.

Ron

evil_motors

iTrader: (3)

wow that is awesome info.. i was wondering about setting timing..

BMS2004

whoa, mike! dude frickin call me man DAMN how many times do i gotta tell you that.