IMS Upgrade - Should I have it done

[Jake Raby]

Originally Posted by Jim Miller

I understand the need for oil changes and driving in the proper RPM range but I don't see the benefit of driving the car hard. Seems like the driving hard will diminish life.

Thats what conventional wisdom would lead one to believe.. BUT we never see failures from engines being driven hard.. Maybe one call per year.

Very seldom do IMS bearing failures occur in race engines.. I tore apart one that had 50K track miles on it and the IMS bearing looked fine and it was even a single row.