timing questions

[bryan]

I am running a 2.0 motor with a counterweighted crank, flat top pistons, cam grind of 440/270, a weber 2 barrel(32/36dfev), and a 009 distributor wiith the petronix ignitor.
My questions are: Do I need to change distributors? If not where should my base and full advance timing be set.
I have been getting a small ping at freeway speeds when I put my foot in it

Bryan, Loose the 2 barrel,and try 36deg.total advance @ 3000rpm.Good luck
let me know if i canm help further.

[Wayne 962]

I agree, the two barrel is probably not big enough for the type of performance that you're looking to get. It is generally recomended that dual Weber 40s be put on 914s. The 44s are a little too big, and should only be used with race (larger displacement) motors.

36 Degrees advance at 3000 is one of the accepted ranges for tuning the 009 distributor. The 009 should work fine, but your carb is kindof small, in my opinion.

I'm not sure what would be causing the ping, except for the fact that your timing may be slightly off at the point where it is right now.

Hope this helps,

Wayne

[JP Noonan]

Does the 009 only fit type IV engines? If it fits in type I it may have a #3 cylinder retard. A VW solution to the Type-I #3 over heating problem. This retard would not cause a ping but mabye a stunble that is felt as a ping. I don't think the 32/36 is such a bad carb, espeicially for street driving. It is a 2 bbl. progressive, so if it is tuned right it gives better trasition and fuel economy. It is also used as a conversion for the ford capri/Pinto with 2.3+ motors. However for performance get a duel carb setup preferably from someone who can jet it to your cam, motor, and altitude, as jeting these carbs from scratch means you need an assortment of jets. It is worth it to pay more for a properly turned carb with a high quallity linkage. Rather then to go through the aggravation of rejetting the carb over the period of a month and running around looking for spherical ball ends and bending rods so that the linkage dosen't stick. Another thing if the ping dosen't go away with the timing set to 36-35 degrees, then maybe try putting points back on, and I don't know if this will apply to VW, but Ford put out a T.S.P. about 5.0L engines pinging because the spark signal was jumping between spark plug wires that were too close to each other.