Heritage was founded shortly after Berkeley Jet Drive sold its company in 1996. It is the same A/T was the first company to offer the 9.250 and 9.500 impellers. A/T also makes impellers for Berkeley, Aggressor and Legend style jets. A/T jet drives have reached speeds of 163 MPH and have run 126MPH on the white water racing circuits. Ron Gordon owned Dominator before he designed the A/T jet drive. The newer Dominator uses the A/T impeller also. If you do use another manufacturers impeller and wish to have a stuffer, you will have to fit a stuffer plate into the A/T bowl. If you have a preference for an impeller by another manufacturer, they will fit the A/T but you will give up the stuffer skirt design. A/T impellers run a real good profile anyway, so why not use them in your A/T jet. I have seen builders use other impellers on A/T jets but to me, this makes no sense, as you give up the anti turbulence design of the stuffer. This is a nice design and for this reason I recommend using only A/T impellers in A/T jets. A/T impellers for the A/T jet have a wear ring skirt on the back side of the impeller that fits into a machined surface in their bowl. I am comfortable using the cast aluminum impellers up to 500HP. They are nicely finished and heat treated. These impellers are nicely cast at A/T's own foundry. If you are racing in a shallow, rocky environment and gulping a lot of air, the stainless steel or 1018 billet steel impeller will take the biggest beating. Keeping an eye on your suction housing pressure is not a bad idea either. I use 500 HP and 5500 RPM as my cut off point.įor you folks running with a lot of horse power, the proper impeller cut and proper intake hardware for your application is a must. As a builder, I have to be conservative and put my emphasis on durability. It depends a lot on what kind of a jet boater you are, as to how much you can over power cast aluminum impellers and get away with it. If you want to stretch the limits of cast impellers, that is up to you. Now, I know that a bunch of jet boaters out there run cast aluminum impellers at much higher HP loads and get away without troubles. No matter how good the parts are in your Jet drive, you will tear them up. You will eventually experience catastrophic jet drive failure if you don't correct the problem. But, just a word to the wise, loading, unloading and then reloading your Jet Drive on a high horse power blast run will create tremendous pressures inside your drive unit. Unlike the cast aluminum, Mag/bronze and stainless steel impellers are able to handle greater horse power loads and high speed unloading conditions. Generally, cast aluminum impellers are able to withstand up to 500HP and 5500 rpm as long as the jet boater keeps the jet drive loaded properly and does not over rev the drive.

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