Does the intake match the d-shape port of my engine?
The intakes are designed specifically for the Tillotson JT-207 d-shaped port. There may be slight variations depending on the brand of head and engine. Only the Ducar 212, Tillotson 212E, and Ghost 212, which use the Ducar Hemi Head, have a mismatched port that may require some port matching.
What is the barb fitting for on the intake?
The fitting is to get a vacuum signal for external fuel pumps. The intake is the recommended place to get your pulse rather than the crankcase or valve cover.
Is the carburetor for gravity fed or by a fuel pump?
Both. If you are using a stock fuel tank, the fuel tank outlet needs to be above the fuel inlet of the carburetor. In most cases, it is not, so the tank needs to be raised. When relocating the tank or using a remote tank for gravity feed, keep the tank within a couple of feet. If the tank is too high, it may pressurize the fuel enough to force the inlet valve open, causing a rich condition. When using a fuel pump, use a round-style vacuum pump. Do not use electric fuel pumps, or if using some dual feed pump will have too much fuel pressure and will force the inlet valve open, causing a rich condition. The best pump to use is the Walbro FPC-1.
How does this carburetor compare to the VM22 Chikuni(Chinese Mikuni) Carburetors?
The PWK is superior in every way. The tuning, idle, throttle response and power will be better than most round-style carburetors.
How does this carburetor compare to the VM22 Chikuni(Chinese Mikuni) Carburetors?
There are marginal differences in performance when both carburetors are tuned. However, the PWK is a better value due to the lower price of the carburetor.
How does this carburetor compare to Tillotson or Diaphragm Carburetors?
Properly tuned Tillotsons designed for your application have performance and tuning advantages. However, Tillotsons or diaphragm carburetors on 4-cycle engines are not made to idle and will be finicky if not used properly. Unless you are kart racing, we normally recommend using a bowl carburetor.
