Adjust the advanced curve w125 and Pertronix distributor

[SMO]

Hi !

Need some advice to set my new Pertronix distributor. The engine is a 2332cc with w125 cam and 1.25:1 rockers.
My one thoughts are to run the silver springs, starts with + 3 degrees @ 1500 rpm and use the RED advanced rev limiter , the red one is limited to 20 degrees +

So if i have set the timing to 10 degree @ TDC and with 3500rpm and up i have 30 degree

What do you think ? what combination of springs and rev limiter do you use ?
Or do you comb, silver and bronze or copper springs ?

And how high can i go with w125 cam ?

I also use MSD 6AL box and MSD blaster coil.
// Magnus

[Bruce]

.... and with 3500rpm and up i have 30 degree

Why do you want to have such a slow advance curve?

[SMO]

I want the idle speed set at ~1000 rpm, and if i use copper springs i have 5 degree + @ 1000 rpm and the effect of that is idle speed starts to rice by it self.

[Bruce]

I'm not talking about the advance at idle.  Why do you want the full advance to come in so slowly?

[Jim Ratto]

I'm not talking about the advance at idle.  Why do you want the full advance to come in so slowly?

I run a locked distributor, all advance, all the time. 32 degrees

Only hitch is sometimes the starter hates me (cold starts)

[Diederick/DVK]

jim, do you run a 6v or 12v starter? wouldn't a 6v have less difficulty with a cold start?

[Jim Ratto]

jim, do you run a 6v or 12v starter? wouldn't a 6v have less difficulty with a cold start?

if I had a 109 tooth flywheel, yes.
But I have a 130

I run a Porsche starter (or A/T VW Bug) to help matters. SR17

[SMO]

Bruce, this is the choice i have with the springs, maybe i can comb. two different springs to get an earlier start and a faster advanced ?

Jim, this is a dayily driver so i don´t think 32 degre and looked advanced is a good caomb on this car
But i need to know if i can comb different kind of springs?

Here is a link to my car

http://www.ausbrechervwmange.blogspot.com/

[Jim Ratto]

Bruce, this is the choice i have with the springs, maybe i can comb. two different springs to get an earlier start and a faster advanced ?

Jim, this is a dayily driver so i don´t think 32 degre and looked advanced is a good caomb on this car
But i need to know if i can comb different kind of springs?

Here is a link to my car

http://www.ausbrechervwmange.blogspot.com/

Hi SMO, I drive my car typically 3-4 days a week (right now it is best m.p.g. car  I own!) I used to run the lightest advance springs (and fattest bushing) in my MSD dist so I had max advance just off of idle. VW motors like alot of initial advance (in my opinion). My nylon sliders in distributor wore, so I just locked advance out. Like I mentioned only drawback is the starter struggles once in a while, but I have spark box wired so it is seperate circuit from starter switch. So I get motor cranking, then fire ignition.
I would make whatever adjustments you can to get max initial advance, without going too far with full advance. I would be most concerned with full advance, and try to have it all in by 15-1700rpm. You're motor will respond much more crisply, I'll bet you lunch. 

[Bruce]

Bruce, this is the choice i have with the springs, maybe i can comb. two different springs to get an earlier start and a faster advanced ?

Try the weakest one plus the next one up together.  Hopefully that will create an advance curve that starts to advance around 900-1000, and is all in well before 3k.  What Jim suggests would be best.  For a point of reference, an 009 is all in by 2500rpm.