The factory setup was designed to dissipate the heat from the flywheel through the engine via the crankshaft. Aluminum flywheels can be a problem in high HP applications. The heat generated in the steel inserts will not transition to the aluminum flywheel efficiently and this can cause the steel inserts to warp or glaze over. Erratic clutch engagement issues and slippage are usually the first signs that things are getting a little "too" hot.
To combat this problem TU now offers lightened cast iron OEM style flywheels. This way you can take advantage of a lighter then factory flywheel at a fraction of the cost. For the budget version we remove 3 lbs. from the OEM style flywheel bringing the weight down to 15.8 lbs. For those who are looking for that little extra, we offer our ultra-lite competition version which takes an additional 3.8 lbs off the weight bringing the total weight down to 12 lbs.
Keep in mind, unlike the aluminum flywheel these flywheels are lightened on the outermost portion. Although these may weigh a little more then the aluminum versions, they can have more of an effect on engine spool up characteristics because the weight is closer to the center of the crankshaft. All our flywheels are professionally balanced twice. Our machinist does the first balance and our clutch manufacturer does the second to insure you of a product that will be trouble free for many years to come.
Factory Cat Iron Flywheel- 18.8 lbs
Budget Version- 15.8 Lbs
Competition Version- 12 Lbs
These are OEM Cast Iron Flywheels. We now carry both the 8-Valve and 16-Valve versions in stock. Use of a transmission safety blanket is recommended in any application exceeding factory RPMs and/or horespower levels whether you are running a factory or aluminum style flywheel.
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