I keep telling my self it has to have a rev limiter, but doing a search does not give a definitive answer. I have found people in TJ's talking about a rev limiter but no one in a YJ seems to have hit theirs.
The highest I have knowingly revved my Jeep is 3,500rpm just messing around, anything above 3,000rpm did not seem to make a difference so I shifted.
This thread says the YJ does not have a rev limiter and the valves float around 6,200rpm.
This guy also throws out a 6,200rpm number.
This guy says, the Renix 4.0L does not have a rev limiter, but they are talking about Cherokees, and my 2.5L has a Renix computer.
So does anyone have a source that says that the YJ has a rev limiter (and where it kicks in)? Or does anyone need an excuse for a V8 swap in there 2.5L Jeep, please video tape.