V8’s On The Horizon……..(?)

[ShadowsPapa]

Bingo. When I was a teen seemed like every XJ I looked at buying locally had a rear main seal leak. Outside of that they're bulletproof reliable. Brother in law's XJ had it twice IIRC.

I wonder if it was more with certain years and configurations.......
The one I pulled from the donor Jeep for my car had 100,000 miles and the rear was dry (oddly, the front pan seal was a bit wet as I recall, would have to look back at the pictures from back then)

Of course, many had this leak ->

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[gonemad]

I love my Glad, but I miss the Coyote 5.0 in the F150 I traded for it.

There’s a passel of 392s about four hours west of me, but of course they are all JLs and not JTs.

Nevermind the ridiculous prices.

 

[Rusty PW]

The 2, 4.0's I had never leaked oil. But the 89 XJ had a cracked exhaust manifold. Replaced it with a stainless steel Borla header. Broke 2 ribs replacing that manifold when the ratchet broke tightening up the last 2 bolts. Ouch.

 

[Toothgnasher]

The 4.0 oil leak thing comes from the rear main. I had it once.

Yup, and the 3.6 carries on the tradition.

 

[ShadowsPapa]

Yup, and the 3.6 carries on the tradition.

How? The rear main leak isn't common. The right valve cover leak was resolved with different valve covers.
Never had one that leaked at all

 

[Toothgnasher]

How? The rear main leak isn't common. The right valve cover leak was resolved with different valve covers.
Never had one that leaked at all

My JL had a rear main leak and the right valve cover leak and the cams.

 

[ShadowsPapa]

My JL had a rear main leak and the right valve cover leak and the cams.

I see you are in Canada - are you Kevin's brother, by any chance?

 

[Jrgunn5150]

Extension status is investigate now. Only real update.

 

[BillyP]

Extension status is investigate now. Only real update.

Thank you for keeping us updated. Just curious. How hard would it be to add the 6.4 to the JT if they used the parts from the JL? A lot of tooling, or only minor tooling? I’m guessing a lot of tooling, since they haven’t made the JT 4xe. For a guy like me, with no automotive assembly line experience, it doesn’t seem like it would be that hard.

 

[BillyP]

Sorry, I screwed up and made the whole post a quote.

 

[ShadowsPapa]

Sorry, I screwed up and made the whole post a quote.
Thank you for keeping us updated. Just curious. How hard would it be to add the 6.4 to the JT if they used the parts from the JL? A lot of tooling, or only minor tooling? I’m guessing a lot of tooling, since they haven’t made the JT 4xe. For a guy like me, with no automotive assembly line experience, it doesn’t seem like it would be that hard.

People keep trying to over-simplify these things and miss the bigger picture.
It's not a matter of "will it fit" or "it will fit, just do it", it's a matter of:
Evaporative emissions certifications, testing, reports (yes, because the JT is different shape)
Crash testing (due to the different engine, now it's a whole new vehicle for testing. A V8 can make it behave differently in crashes and emergencies)
SAE testing for payload and towing
CAFE testing - and a V8 will drag down their fleet numbers, costing them money - so they'd likely make up for it by charging a premium for that engine. Look at the differences in the numbers for a 2.0, 3.6 and a hemi in the JLU.
Supplier abilities to make the numbers, contracting and so on.
It's not hard in your shop or garage to do it - look at the V8 swaps being done by a couple of companies out there. But they do not have to deal with anything I've posted above - not a single thing - they aren't an auto manufacturer, so can ignore emissions, crash testing, towing and payload SAE testing, and more

 

[Jrgunn5150]

To quote the good book, Again I tell you, it is easier for a camel to go through the eye of a needle ...

 

[ShadowsPapa]

The eye of a needle being mentioned isn't a tool for sewing, it's a security measure protecting a city. The entrances are stone, made very narrow so only people can get through, no invading force on the back of an animal. The entrance to the city is referred to as the eye of a needle.

 

[BillyP]

People keep trying to over-simplify these things and miss the bigger picture.
It's not a matter of "will it fit" or "it will fit, just do it", it's a matter of:
Evaporative emissions certifications, testing, reports (yes, because the JT is different shape)
Crash testing (due to the different engine, now it's a whole new vehicle for testing. A V8 can make it behave differently in crashes and emergencies)
SAE testing for payload and towing
CAFE testing - and a V8 will drag down their fleet numbers, costing them money - so they'd likely make up for it by charging a premium for that engine. Look at the differences in the numbers for a 2.0, 3.6 and a hemi in the JLU.
Supplier abilities to make the numbers, contracting and so on.
It's not hard in your shop or garage to do it - look at the V8 swaps being done by a couple of companies out there. But they do not have to deal with anything I've posted above - not a single thing - they aren't an auto manufacturer, so can ignore emissions, crash testing, towing and payload SAE testing, and more

Thanks for the info. It sounds so easy…until I read your reply.

 

[ShadowsPapa]

Thanks for the info. It sounds so easy…until I read your reply.

The physical side - just sticking it in there, isn't bad. There are at least a couple of businesses doing the hemi conversions and it's like factory when done. But they don't have to worry about "rules and laws" unless, perhaps in California........... and I won't touch that one with a 1,700 mile pole.

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