Purchased a 94’ XJ for my daughter. It has no rust, and is in excellent shape, but a blown head gasket. Bought a reman engine from CarID. 3 Year, unlimited mile warranty for $1,700. But I digress...

The new engine in my daughters XJ feels like it has boatloads of power compared to my 91’.

In my 91’, gotta downshift to 3rd to get up some of the little hills in Southern Indiana. Feel like I could cruise CO with no problems in the 94’.

I guess I should do things like measure compression on my 91’ engine to evaluate.

But, I’m an IT guy, not a mechanic. I don’t know what else to check.

Al I know is that my daughter’s XJ feels like a 12 second quarter mile ride compared to mine.

That makes me think that the engine in my 91’ is aging and needs an overhaul.

Just to through a factoid in, Daughter’s XJ is a 2WD, Chrysler 8.25, 3.55. I have a 4x Dana 44, 3.55.

212 K.

And I have two engines! I dawned on me as I think about this. I could test the same things on both engines.

From the time I was driving in the hills in the 91’, I suspected that the engine is not producing full power. But I never would have known until i drove this second XJ.

The 91’ is smooth. Always starts. Doesn’t die. Doesn’t sputter, smoke/burn oil, backfire or miss.

Got it. That is actually an item on the “to replace” list. Have a new CC (and muffler) in hand.

Thank you!