Why does my flexplate keep breaking?

Why does my flexplate keep breaking?

The following causes for cracked flexplate failures: 1) Out of balance engine or torque converter. 2) Bad starter drive can cause teeth or ring gear to wear rapidly or break off. Teeth can also break when engine is running and starter is engaged. 4) Some applications may require starter shims to be used.

Can a torque converter clunk?

Well, if your transmission has been slipping out of gear, this could be a symptom of a bad torque converter. This typically happens when you switch gears and your transmission slips into neutral of its own accord. Moreover, sounds such as shuddering, clunking, whirring, and humming are rarely good news.

Are there torque specs for flex plate to torque converter?

Gentlemen, I did a search, but could only find torque specs for flex plate to torque converter. I am wondering if there is a torque spec for attaching the flex plate to the end of the crank. I have some nice new grad 8 bolts, and am looking forward to putting my new 350 crate engine into a car.

How big of a bolt do you need to install a torque converter?

 When installing 7/16” bolts to attach the torque converter to the flexplate we recommend that you first enlarge the torque converter bolt holes in the flexplate to an inside diameter of 29/64” (.453”).

Where can I find the torque specification guide?

Ensure that you have the correct torque for the application by referring to SKF 457377 torque specification guide or contact the vehicle manufactures dealer. It is important that you properly torque the spindle nut to ensure optimum bearing life. Under torque of an axle nut will allow excessive movement causing uneven loading and excessive wear.

How to check a torque converter for reliability?

Verify that the torque converter pilot diameter matches the crankshaft pilot diameter. Verify that the torque converter bolt pattern matches the flexplate bolt pattern. Verify that the flexplate bolts do not interfere with the torque converter. Verify that the torque converter mounting pads sit flush against the flexplate.