Our new cowl mod for the Grumman Tiger is in production and has been well received.
Click here for Cheetah / Traveler Cowl info.

The LoPresti Tiger cowl consists of a vertically split nose bowl made with carbon fibers, a cowl-to-prop "baffle" seal, a new cooling air exit, and a separate NACA scoop for engine combustion air. The combination of efficient circular inlets, a prop seal and the NACA duct that does not "rob" any cylinder head cooling air effectively reduces oil, head and induction air temps.

Roy LoPresti, who optimized the Traveler design to create the Tiger more than 25 years ago said, "The basic R&D for the Tiger was done in three months in 1973 without any computers. Experience, intuition and a strong sense of urgency drove the design. Our intuition proved to be very good. Today we have 26 more years of experience. We can make any airplane go faster. Not only is the Tiger faster now, but engine cooling is improved! The Tiger is now a more efficient "cat" and has a fresh new modern look that enhances the Tiger’s overall appearance."

"Back in 1973 at Grumman, our experimental Tiger gave us 172 MPH. Given the right circumstances, I feel that we have a good chance to reach this goal with additional mods."

Flight testing showed that we "found" 5 MPH with a prototype nose bowl that had a less than perfect finish. 

This RH Naca duct is for the Tiger only.
The Cheetah has a NACA in the forward cowl.