Datsun Roadster Forum-311s.org

I purchased a set of zTherapy rebuilt carbs for my '66 "Survivor". Had trouble using a Unisyn effectively to balance the carbs. And also, couldn't shake a rich running mixture. Spoke with Keith Williams at Shasta last year, he recommended different needles. Got a set from him, which helped immensely.

Purchased a "snail" type air flow meter and a Gunson Colortune. The air flow meter was a breeze to use to balance the carbs. The Colortune was simple and easy to use for air/fuel mixture. Survivor is running great! I highly recommend the Snail meter, Guinson Colortune, and the Keith Williams Hot Line for carb tuning made easy!

FYI
Pat

i have used the snail type air flow meter and it works great! i have always wanted to use colortune to get the air fuel close/matching.

+1 on the snail... only way to go.