VForce Carb Changes?

"Dear Ralph" September 28, 1998 0
Dear Ralph: I have purchased a set of Delta VForce Reeds for a stock ’96 ZRT 600. I have had all of the updates...

Dear Ralph:
I have purchased a set of Delta VForce Reeds for a stock ’96 ZRT 600. I have had all of the updates performed and I am wondering what carburetor changes are needed so that I have the same fuel-air mixture that the sled originally came with.

Len Urban
Duluth, MN

The VForce reeds flow more air, and by doing so will require slightly richer jetting to maintain the same fuel/air ratios. In practice, the jetting chart on your clutch cover has a bit of “safety” margin built into the specs, so you could likely follow that chart and still be safe. If this sled was jetted right to the edge and then had VForce reeds installed you would find yourself jetting up one or two main jet sizes to maintain the proper exhaust gas temperatures. On this engine, VForce reeds are usually good for a 4-6 HP gain from what we’ve seen. You’ll know because you’ll have to re-clutch it to keep the rpms down and get the power to the track.

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