I've been looking into using a hydraulic A442F behind a 4-banger diesel such as a Cummins 4BT, Toyota 15B, Mitsu 4D34, etc. There are provisions out there to physically mate up the transmissions, but I'm not sure about the shift points as the transmission originally came behind the 6-cylinder 1HD-T which is meant to rev higher than these engines.
My understanding is the hydraulic A442F shifts based on two parameters: throttle position (determined by the throttle valve cable) and the governor located in the rear of the transmission. Hooking up the throttle cable (often called the 'kickdown cable', although I don't think that's technically correct) wouldn't be too much of an issue. It's the governor I'm more worried about as that is what references engine speed.
Does anyone know if/how the shift points could be modified? If the governor is a centrifugal type, the weights in it could be modified. If that's not possible then the next place to look would be the governor valve in the valve body. Anyone have any experience or ideas with this?
My understanding is the hydraulic A442F shifts based on two parameters: throttle position (determined by the throttle valve cable) and the governor located in the rear of the transmission. Hooking up the throttle cable (often called the 'kickdown cable', although I don't think that's technically correct) wouldn't be too much of an issue. It's the governor I'm more worried about as that is what references engine speed.
Does anyone know if/how the shift points could be modified? If the governor is a centrifugal type, the weights in it could be modified. If that's not possible then the next place to look would be the governor valve in the valve body. Anyone have any experience or ideas with this?