360

114k fingers crossed !

Kalali

None of the CCH heads come supplied with those dowels. I was able to pull/knock them out my old head and hammer them in the new head. It takes a little fiddling but they will eventually come out. You can also try knocking them out from behind through a little opening under the dowel.

concealer404

183k miles and still going perfectly strong here. That said, i lead a charmed life when it comes to cars that have things that "will break."

BuckeyeBullet

Unfortunately I already returned my old head to CCH thinking, "The dowels won't be a big deal to find". I'm kinda skeptical about making my own since I don't want to oversize them and risk cracking the head when I hammer them in. I will probably ask the dealer for a price this week. How necessary are they?

machinisttx

Are the dowels some sort of oddball diameter/size/shape? If not, you can probably pick up brand new dowel pins from the hardware store.

I have a 2000 model with around 177K on it. I bought it with 144k on the clock. Up until about two months ago, I was experiencing unexplained coolant loss. The culprit was a weak spot with a pinhole in the plastic tank on the passenger side of the radiator. It finally split and puked coolant everywhere. Since replacing the radiator with a brass/copper three row, my coolant level hasn't dropped at all. The OEM plastic/aluminum radiators are known for blowing the tanks or seeping around the tanks.

BuckeyeBullet

The holes in the head for the dowels measured .420" on my calipers. The pins obviously have to be a little bigger so they fit tight enough.

Where is your all-metal 3-row radiator from?? I want one.

bryweb

I ended up swapping my motor because of the 0331 head. I have had the dreaded 0331 cracked head on two different jeeps in the last year (2000 XJ and a 2001 WJ), the 1st one the WJ after putting a new head on, (ended up having to pull the motor to change the cam bearings.

The 2nd time I bought a 96 motor from the Junk Yard, added an aftermarket header, and made some brackets for the coil pack..... And this is what I will do every time for now on.... very happy with the swap.

https://www.cherokeeforum.com/f2/200...9/#post1534341

Bryan

bryweb

Double Post.... Sorry

Bryan

Kalali

Those dowels fit into holes on the intake manifold and are necessary for aligning the manifold with the head when you put things back together.
Look through your drill bits and find one that fits in the hole and cut the end off. The dowels don't need to be super tight in the hole. A slightly tight fit will be adequate. One tip is make sure the corresponding holes on intake manifold slide freely over the dowels before you mount your head.

BuckeyeBullet

Great idea, Kalali, with the drill bits. I was curious if the Chrysler/Jeep dealer had the dowels so I stopped in to check. Turns out they are $3 apiece and readily available, so I just bought some. The part number I had is still in use: J3172318 for future reference.

Kalali

Not my idea. I learned that from one of the old timers here....
Good luck with the install. You're gonna have fun trying to torque a couple of those manifold bolts.

concretebone

Okayyyy so here we go... I have a 2000 jeep Cherokee sport and what do ya know it has the good ol 0331 head...

Now I'm new to engines I have good expierence and I can handle my share of repairs. But will a crack in the head cause a missfire on hot idle or once the vehicle is hot then shut off and on startup missfire..?

And I also ordered a head that had been rebuilt is that okay to do? Will this kick me in the *** later on..? Please help me thank you!!

- Steve

bryweb

I have had a few cracked 0331 head vehicles (Cherokees and Grands) that I have bought with the bad head, two things I have seen is the O2 sensors get trashed by overheating and antifreeze which will cause the misfire, and the Cam bearings get trashed..... nothing sucks more than do a head job and then have to pull the motor, pull the head again, and replace the cam bearings. So make sure you have good oil pressure at idle after a 15 mile drive before you do the head (just because the antifreeze is hot does not mean the oil is so you can not go by the temp gauge)

Make sure you use SAE 30 and lube the head bolt threads to get a true torque and remember head bolts can only be used twice before they are stretched and need to be replaced.

Good Luck

Bryan

Kalali

Yes and yes if the core they use is 0331.

huntingman2706217

no... the revised head is still a 0331 head... it was in mis 02-04 wj's and i dunno what tj's... guessing the same years... it just had letter cast in between the 3 and 4 cylinder where the crack always happens... it is possible he got a rebuilt revised 0331 head... me personaly id pull a head from said wj and have it rebuilt instead to be sure