NEW MODEL! Designed for high reliability with engines 9hp and bigger (up to 20hp)
Not sure if a torque converter is right for you? Read our run down on torque converters vs dry clutch here
Want to learn how to install a torque converter and find dimensions of our unit? Have a look at our install guide here. (*NOTE: Install guide is for the smaller 'back-plated' version)
Looking for the spacing between the pulleys or examples of installation? CLICK HERE to view our guide
This converter is ideal for higher power engines and projects with large wheels or heavy vehicles.
It comes complete with everything required to set it up and make it operate except for nuts and bolts.
FREE 420P Chain and 420P sprocket (only one size available - 44T)
420 Pitch Torque Converter suit 4-stroke.
Suits Standard 25.4mm Drive Shaft (1") (straight shaft) and ~6mm keyway. (Driver Diameter = 140mm, Driven Diameter =192mm)
Includes 420P 10T drive sprocket (all orders after 25/2/2021 now include a 10T)
Includes heavy duty belt
Includes 3/4" Jackshaft and key
Includes bearings and pillow blocks for easy mounting
Expect approximately 2.7:1 initial reduction of your gear ratio upon take-off, then the torque converter will progressively move through to a final drive of approximately 0.90:1 (overdriven) at full speed. This allows use of taller gearing on the rear without acceleration issues..
WHY DOESN'T THIS MODEL HAVE A MOUNTING PLATE?
This model of converter is designed to be used with an external jackshaft. While smaller torque converters can and do use a back plate with the jackshaft built right in, making it very convenient to mount, the bigger torque converters do not as a rule offer this option. The reason is the torque produced by the bigger capacity engine will bend and snap the back plate if not properly attached to a rigid surface. While there are some models in the USA offered with a backplate, it is not a reliable solution and eventually your plate will bend and/or snap due to the forces put on it from the engine.
We choose not to offer that solution as our parts need to be reliable and our reputation for being specilists in the 4-stroke field needs to be held above cheaper unreliable options. We recommend using the external jackshaft as per the one in our kit. It is not too difficult to fit and will ensure your vehicle is reliable and will not have a failure. Be wary of advice that a backplate style torque converter on a 9hp or larger engine will be reliable - that is simply untrue.
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