swap time

tomcat · Feb 3, 2009

I got towed to a friend's shop last night due to really bad rod knock and no power. looks like it is time for a motor. mine is a '99 with AW4. he has a '98 TJ with a 5 speed under a tarp that he was going to use the frame and tub from, it has 70K on the clock anyone know if i would have any problems swapping that in? the only thing I could find is that they converted between metric to standard fasteners between 98 and 99, but i can deal with that.

any input would be great.

joe_peters · Feb 3, 2009

Not to be a smartass, well, maybe a little.

First question: What engine do you have in your 99?

Second question: What engine is in your friends 98?

Was there only one engine option for both the XJ and TJ in those years?

Johnnie Walker · Feb 3, 2009

I believe that the 4.0L is the only option for XJ, and pretty sure it was for TJ in that year, but not 100% certain on the TJ

joe_peters · Feb 3, 2009

Ok, if they are both late model 4.0 engines I think your problems would be minimal, if any.

But I have been wrong many, many, many times before.

Good luck.

tomcat · Feb 4, 2009

Yes, both 4.0

joe_peters · Feb 4, 2009

As long as you reuse the miscellaneous parts from your original engine and the original harness, should be straight forward.

heyhar · Feb 4, 2009

XJs have been (almost 99%) metric for their entire run, as have most vehicles since the seventies. There are SAE fasteners in a few spots, but other than spark plugs and lug nuts, I can't think of any.

joe_peters · Feb 4, 2009

T/housing bolts on a 90 4.0.

swap time

tomcat

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joe_peters

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Johnnie Walker

Piece of Fish!

joe_peters

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tomcat

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joe_peters

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heyhar

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joe_peters

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