04-03-2007, 02:07 AM #1
Adding an advent cdi. Currently running one size larger jet in #3 cylinder. With the timing curve change should I run all jets the same size?
04-03-2007, 07:38 AM #2
04-04-2007, 01:39 PM #3
145 mains with #3 147.5
95g spring 43 psi popoff
Maxima 927 32:1 premix
I bought a used Advent and will probably get it reprogrammed if I ever hear back from adventignitions. The current curves are YAM 76, 44, 45, 46. I am currently using a protec CDI.
I will be going back to 110 pilots as I am way rich at idle. Maybe changing to 115g spring, too.
I wanted to know if running the advent will have enough retard timing in the #3 cylinder that keeping the larger jet in #3 carb will be unnecessary.
Riva gas valves
Prok flame arrestors
cylinders ported and polished
stock carbs and reeds
RIVA reed stuffers and spacer plate
acc. pump blocked
04-04-2007, 07:45 PM #4
Some of the tripple pipe guys should chime in on this.
04-04-2007, 11:32 PM #5
Yes, I was hoping to try the 44 curve, but I wanted advents opinion on what would be best. The other curves are custom from the guy I bought it from. Advent's website shows this as 92 octane. I run 93 because of the pipes and a 41cc head.
Porting by IslandRacing.
So you are saying keep #3 one size larger?
04-05-2007, 08:21 AM #6
I would keep #3 a size larger, just from what I have heard. Even though they are individual pipes with staggered timing #3 still runs hotter.
Advent will give you the curve printout but you have to call them until its done. Don't bother emailing.
The only reason I would be nervous about running #44 on pump gas is the very aggressive timing at lower rpms. My box came with 60 & 61 wich have simular high end #s as the 44 but 44 is dramaticaly higher below 6000 rpm making me think you could suffer deto at cruising speeds. I don't really know, the only experience I have with the tripples is CC race boats with race gas and MSD.
Maybe you could get some tripple pipe guys to respond to a different thread heading like " Tripple Pipe Timing HELP " The info is here. Just my .02.
04-05-2007, 12:39 PM #7
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