Hi Jim. I do not know for sure. I can assume that due to the larger displacement that the version Vittorazi provided with the Moster is jetted differently. Vitto does also modify the stock warbro carb for use with their engines so who knows what CNC work they do to increase performance.
Im looking all over for the stock settings for wb37 carb on my20 atom 80 particularly the high stock setting all I can find is its set from factory don’t touch it warranty whatever to bad I dismantled to clean do you know what it should be thanks?
Vitto updated their A80 manuals. The new set is outstanding. Here is the link to the User Manual. See Pg 30 for low AND HIGH speed initial needle settings for your MY period carb. vittorazi.com//site/manuali/User_manual_Atom80_Eng_021.pdf ...and here is the link to their updated Maintenance Manual: vittorazi.com//site/manuali/Maintenance_manual_Atom80_Eng_022.pdf (All A80 owners should grab these two docs. "Every PPG pilot a mechanic.")
Additionally, any adjustment to the high-speed needle - highly recommended to do so in minute (1-2 minutes of angle) changes. Unless your carb is old or has some other flaw its not necessary to mess with the high-speed circuit. Nearly all changes can be adjusted with the low speed circuit and throttle position screw. The low speed circuit also impacts the mid-range. In my experience (5 years working with two A80's) the high circuit effects are maybe 10% of the overall air/fuel mixture control. Hope that helps!
I typically try to avoid that. It’s irritating. This was an ad-hoc, so unscripted video and I posted it in case it might be helpful to others considering the upgrade. I hope you got something useful out of it.
