Jeep 0331 head swap software

Discussion in general tech started by blaze, oct 12. They put them in the grand cherokees so why not a tj. For detailed instructions, i highly recommend using a factory service manual or haynes service manual. All our stock replacement cylinder heads are warranted against defects in material. I swear the jeep engineers had this head swap in mind when they designed the 4. As you can see here i am looking to swap out my 0331 head as its probably guaranteed done for. Namely american expedition vehicles brute kit, v8 hemi, aftermarket jeep conversions, suspension systems, products, wheels, accessories and highline kits for jeeps tj, jk, wk, xk. I could use some advice on what i need to look out for in getting a new engine preferably a v6 since id rather not have to fill up every 3 days with a v8. Since modern electronically controlled engines have matured swapping one of these into a classic jeep is easier than ever. Nov 01, 2008 read about the hottest new swap for jeeps, the 2. Developed and designed from oe castings, these iron heads feature hardened valve seats and heavierthanstock castings to resist cracking and warping. The selection of injector size will depend on the estimated horsepower output, brake specific fuel consumption bsfc assume 0. Im sure youre looking for some quick answers about this adapter plate, so lets get right to it. As the popularity of the jeep tj has raged forward, so have the requests to perform the most exciting and practical of all engine swaps to them.

Promaxx performance oereplacement jeep inline cylinder heads offer direct bolton power. Promaxx performance oereplacement jeep inline cylinder heads. After having doing this swap, all i can say is this is one of the best things i have done to my jeep. Just bought an 01 xj and about an hour or so afterwards i have discovered the 0331 head cracking problem why is this not in the sticky i didnt see anything about this at all while reading the xj forums previously and if i would have known i would have looked for a 99 or prior to dodge this bullet. I own a 2000 wj and just replaced the 0331 head in it at 170k because it started dripping coolant out the exhaust pipe when idling for long periods. This was done to help counteract smaller exhaust porting on the latest casting of cylinder heads, which was done to meet more stringent emissions control laws. The gm gen iv series of ls engine took american v8 technology to a new level back in 2006. A guide to a common engine swap in jeeps a ten year old article that keeps giving. Clearwater cylinder head 0331 replacement questions naxja. This aluminum head, dohc engine features a different bellhousing bolt pattern than the previous 2. Wikipedia in the middle of the 1999 model year, vehicles with the 4. All around performance gains, over the 258 of course, although i do miss the lower end torque that the 258 had. Just put your core head in the box that you received your newrebuilt head in and attach the prepaid peel and stick label. Came as a completely new,valves,springs,head cast is more solid than the factory cracked 0331 head.

My idea is that i can use my newer intake on the older head and also use the old exhaust manifold. Promaxx performance oereplacement jeep inline cylinder. Clearwater cylinder head 0331 replacement questions modified tech. Once again this is an all new head, only one i found that wasnt a billion dollars.

The generous yj engine bay allows for a comfortable, clean fit for gm small block v6, v8 and even big block v8 engines. May 27, 2009 wikipedia in the middle of the 1999 model year, vehicles with the 4. Will fit engines with head casting numbers 0331, 0630 or 7120. The heads will swap mechanically, so theyll bolt right up to the block the 258 and 242ci heads, 1975 and later, use the same screw pattern and can use much the same gasket. Hi everyone, ive searched for this and havent really found any good answer. It is tough to put an exact price on, or what all you need. Jeep strokers the 0331 head thread help out if you have one. Its done all the time in the magazines, many bigname shops are doing it.

Promaxx performance oereplacement jeep inline cylinder heads offer direct bolt. One of the most enjoyable jeeps to work with today is the jeep yj wrangler, as built from 1987 to 1995. It used to be a jeep thing, but all that stuff brokejohnny11062009, 02. Your swap has to be what is right for your application. Here is a video of the mercedes diesel engine running in the jeep, just after it started for the first. I havent had any trouble related to the head and i used 4. I have known for a little while that i had a bad head do to a bad production batch of 0331 casted heads, i have a 2000 jeep grand cherokee laredo with a 4. Example the cast number is or i need the driver side head do the following. One concern is the dowel receiver in the newer heads here. This thread will go over the steps to swap a 0331 head.

If youve found your way here, then you probably already have a cracked 0331 head in your jeep or you are thinking about a preemptive replacement of your 0331 in favor of the more reliable 0630 or 7120 heads. I have 225k miles on my jeep and most parts are original, so i also decided to replace the water pump, thermostat housing and tstat, intake manifold, valve cover, push rods, rocker arms, 4hole injector upgrade, oxygen sensors, serpentine belt, and spark plugs. Does anyone on here have any ideas as to anything that would pose an issue with the swap. Oct 26, 2007 another benifit of the partssharing design of the two engines it the ability to steal a head and efi off a 4. This is a common conversion, one we have done several times. Eccpp replacement for head gasket set with bolts for 97 98 99 00 01 02. Jeep street and performance, classic rides, the daily driver, land use. Every engine is reverse engineered, allowing atk to find and remove any factory original defect. If you have to rebuild a 258 head it just makes more sense to spend the money on the better 4. The factory ho head is fairly efficient but theres room for improvement particularly in exhaust port flow. Swapping a v8 into an open roof jeep like a cj or a wrangler is an old practice that continues today. This would be the perfect vehicle to either rebuildreplace the mercedes engine, or do a hemi ls or 4bt swap on.

These conversions take some basic planning and effort in their execution, but the results can be quite fantastic. Jeep v8 conversion guide chevy ford dodge engine swap. A forum solely dedicated for 4x4 vendors to showcase their products, specials, and deals. We offer a few different options for installing a gm ls based engine into your jeep jk diy. As long as you do that and it checks out well you can swap the head over and not have any exhaust issues. This attention to detail and quality will save you time and money by keeping your amc or jeep out of the shop and on the road. Lift is not required for the jeep tj to perform the engine swap, but may be done for reasons external to the swap. Came as a completely new,valves,springs, head cast is more solid than the factory cracked 0331 head. Xj jeep and the 99 to 01 models questions anandtech. Another benifit of the partssharing design of the two engines it the ability to steal a head and efi off a 4. Some people say the 0331 isnt as bad as people say.

Been doing some reading on swapping in an older xj head in place of the cracked 0331 20002001 pos. It could also be parted out for the rubicon parts on it. Discussion in general tech started by redneckjeep87. Issues with this option are the head bolt differences 716 on 4. Engine is toast due to the wonderful 0331 head design and its notorious tendency to crack. Eventhough theres no software to actuate the hardware, the components may still fail and not be recognized by the non mds pcm. There is also a couple companies that sell the 0331 heads aftermarket that have beefed up castingbut i would prefer not to be in the 700 range. I did the homework before buying this head, i have found none of the problems adressed on the net. Jeep diesel engine swap diesel tech diesel power magazine. Dec 18, 2017 hi everyone, ive searched for this and havent really found any good answer. This thread is an overview of the steps required to swap the head.

For the casting number, look on the drivers side of the head near the center. Engines are factory checked after assembly to ensure proper operation. Doesnt seem like that much of a premium over the rebuilt head. Set with head bolts compatible with 20022005 jeep liberty dodge ram 1500 2004. Noone done the swap to get rid of that pos 0331 head. When i swap engines in jan or feb i will see if a 2003 grand cherokee head has tupy on it. We scrap jeeps, more than likely if we get a 0331 head jeep in the head is cracked, well over half the high mileage 0001 ones we get in have this problem. You can swap the 0331 head over to the 99 block but you need to get the 0331 head magna fluxed and shaved. Yes, the 0331 head 19992006 will have the coil rail bosses that the previous heads will not. I had to replace the head gasket at around 190,000 so i had the head tanked. Issues with this swap are dependent on the donor vehicle, others will arise of course. I would not be afraid to get a 2001 and do the head swap. Ive read that the heads labeled 0331 are prone to cracking and that they were changed to a head labeled. I am currently replacing the cylinder head on my 01 xj with a clearwater cylinder head.