Originally Posted by
Afun
Both engines have a little over a gallon in them. SHOULD I LOSE ANY OF THE HEAD SHIMS? WHAT ARE YOUR THOUGHTS ON THE CARB INSERTS?
The original VZ was designed to run a 8mm and 9mm venturi. The real question you have to ask yourself, does running a smaller venturi mean you're on the gas more? Driving WOT on a smaller venturi burns more gas than learning throttle control on a larger venturi. The tuning window also closes on smaller venturis... So if you tune in the cold dewy morning, by hot and dry afternoon, you'll have to retune.
Did you install the extra .1 brass shim the engine came with? You must run one .1 brass and one .2 aluminum shim no matter what.
Originally Posted by
losibill
one in my buggy had a jp2 and the one in my truggy has a jp4.
Here's your problem. These pipes are fuel hogs.