Seasoned Member
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Belt driven...nah.Originally Posted by Slim357
Think Id rather have the super charger if I ever go that route.
Senior Member
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My XJ has over 310,000 original everything including the timing chainOriginally Posted by XJwonders
I have seen a xj with 4.0 that has over 300,000 on the clock
CF Veteran
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bought it with a burnt valve, replaced the head. drove it but it would always just puke out oil from everywhere possible (rms, o rings, valve cover, PCV valve, etc) i could never figure out why. then one day i heard a loud knocking sound coming from the engine. i thought it was a rod bearing or something. took the engine out and pulled the head and found the hole you see there. this was at 207k miles. the PO had put on some "Junkyard injectors" as an upgrade. i think they were clogged, running lean or something because that would explain the burnt valve and a hole in the piston. i have since put in rebuild Bosch type 3s, and advise against junkyard injectors. i also think that the piston may have started out with a crack and was allowing combustion pressure to get past the piston and into the crankcase, pressurizing everything and forcing the oil out.Originally Posted by Luke95
Story?
CF Veteran
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Mine has 299456 but she is sitting out there with straps in it with only mounts holding it in Originally Posted by jake92
My XJ has over 310,000 original everything including the timing chain
. Lol she was still running good just losing way to much oil from blow by.
Senior Member
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My original A/C works perfect too..
shame you livedOriginally Posted by Diesel Dan
I won a open class competition mud bog in my cherokee with bald 31's with no oil and sea water in the rad. Then I flipped it 4 times drunk trying to shoot heroine on the freeway driving home. Still runs fine today, just put a lil lucas in the motor.My original A/C works perfect too..
Seasoned Member
my question is:
why dont they use iron blocks and heads in modern newer vehicles (maybe they do, i dont know)
is it b/c of emmisions?
obviously they last, they can go thru h*** and back and still live
why dont they use them today?
why dont they use iron blocks and heads in modern newer vehicles (maybe they do, i dont know)
is it b/c of emmisions?
obviously they last, they can go thru h*** and back and still live
why dont they use them today?
CF Veteran
Quote:
why dont they use iron blocks and heads in modern newer vehicles (maybe they do, i dont know)
is it b/c of emmisions?
obviously they last, they can go thru h*** and back and still live
why dont they use them today?
weightOriginally Posted by black2000xj
my question is:why dont they use iron blocks and heads in modern newer vehicles (maybe they do, i dont know)
is it b/c of emmisions?
obviously they last, they can go thru h*** and back and still live
why dont they use them today?
Seasoned Member
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weight?Originally Posted by CheapCherokee
weight
b/c they want the vehicle to be lighter?
Seasoned Member
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weight?
b/c they want the vehicle to be lighter?
Less weight = better mileage ( i think... )Originally Posted by black2000xj
weight?
b/c they want the vehicle to be lighter?
CF Veteran
Weight and it's just the way they do It nowadays. Which is a shame because you overheat an aluminum motor your in trouble. It's crazy I can drive my jeep then let it sit for an hour in the cold and it's still warm when I fire it up. My girlfriends rav 4 gets to temperature in about 10 seconds.
It must be more cost effective. Less weight, easier to manufacture... It sure would be nice if they were able to bring back the l6 but sadly that will never happen
It must be more cost effective. Less weight, easier to manufacture... It sure would be nice if they were able to bring back the l6 but sadly that will never happen
CF Veteran
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b/c they want the vehicle to be lighter?
well yeah...Originally Posted by black2000xj
weight?b/c they want the vehicle to be lighter?
less weight = less power required = better mileage.
the 4.0 is one heavy pig in the engine world.