Jeep 0331 head swap software

Noone done the swap to get rid of that pos 0331 head. Ive read that the heads labeled 0331 are prone to cracking and that they were changed to a head labeled. Since modern electronically controlled engines have matured swapping one of these into a classic jeep is easier than ever. I havent had any trouble related to the head and i used 4. A guide to a common engine swap in jeeps a ten year old article that keeps giving. 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. Promaxx performance oereplacement jeep inline cylinder heads offer direct bolt. It used to be a jeep thing, but all that stuff brokejohnny11062009, 02. Nov 01, 2008 read about the hottest new swap for jeeps, the 2. Set with head bolts compatible with 20022005 jeep liberty dodge ram 1500 2004. The generous yj engine bay allows for a comfortable, clean fit for gm small block v6, v8 and even big block v8 engines. 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. One of the most enjoyable jeeps to work with today is the jeep yj wrangler, as built from 1987 to 1995.

I swear the jeep engineers had this head swap in mind when they designed the 4. 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. 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. It is tough to put an exact price on, or what all you need. 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. Forced induction was not on the agenda, and i wasnt keen to tear into the short block either since the engine was still in excellent condition at 163k miles, so installing a ported head was the obvious way to go. Clearwater cylinder head 0331 replacement questions naxja.

This thread will go over the steps to swap a 0331 head. Big power jeep straight six stroker build on a budget with newcomer racing duration. The selection of injector size will depend on the estimated horsepower output, brake specific fuel consumption bsfc assume 0. Developed and designed from oe castings, these iron heads feature hardened valve seats and heavierthanstock castings to resist cracking and warping. A forum solely dedicated for 4x4 vendors to showcase their products, specials, and deals. Dec 18, 2017 hi everyone, ive searched for this and havent really found any good answer. Some people say the 0331 isnt as bad as people say. Will fit engines with head casting numbers 0331, 0630 or 7120. 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.

They put them in the grand cherokees so why not a tj. Doesnt seem like that much of a premium over the rebuilt head. Issues with this swap are dependent on the donor vehicle, others will arise of course. This would be the perfect vehicle to either rebuildreplace the mercedes engine, or do a hemi ls or 4bt swap on.

Promaxx performance oereplacement jeep inline cylinder heads. Discussion in general tech started by redneckjeep87. I would not be afraid to get a 2001 and do the head swap. All around performance gains, over the 258 of course, although i do miss the lower end torque that the 258 had. After having doing this swap, all i can say is this is one of the best things i have done to my jeep. It could also be parted out for the rubicon parts on it. Wikipedia in the middle of the 1999 model year, vehicles with the 4. Promaxx performance oereplacement jeep inline cylinder heads offer direct bolton power. Eccpp replacement for head gasket set with bolts for 97 98 99 00 01 02. 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. I did the homework before buying this head, i have found none of the problems adressed on the net. For the casting number, look on the drivers side of the head near the center. Another benifit of the partssharing design of the two engines it the ability to steal a head and efi off a 4.

Eventhough theres no software to actuate the hardware, the components may still fail and not be recognized by the non mds pcm. Swapping a v8 into an open roof jeep like a cj or a wrangler is an old practice that continues today. Here is a video of the mercedes diesel engine running in the jeep, just after it started for the first. Engine swap after recently buying a 95 yj jeep with a 4 cylinder, i plan to upgrade the engine because it is not powerful enough to push the tires i currently have. For detailed instructions, i highly recommend using a factory service manual or haynes service manual. Engines are factory checked after assembly to ensure proper operation. This thread is an overview of the steps required to swap the head. Clearwater cylinder head 0331 replacement questions modified tech. When i swap engines in jan or feb i will see if a 2003 grand cherokee head has tupy on it. Im sure youre looking for some quick answers about this adapter plate, so lets get right to it. 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.

The factory ho head is fairly efficient but theres room for improvement particularly in exhaust port flow. Engine is toast due to the wonderful 0331 head design and its notorious tendency to crack. As long as you do that and it checks out well you can swap the head over and not have any exhaust issues. Hi everyone, ive searched for this and havent really found any good answer. Discussion in general tech started by blaze, oct 12. I had to replace the head gasket at around 190,000 so i had the head tanked. This is a common conversion, one we have done several times.

This aluminum head, dohc engine features a different bellhousing bolt pattern than the previous 2. 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. 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. 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. Here is a video of the mercedes diesel engine running in the jeep, just after it started for the first time. 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. How to identify 0331 or tupy head jeep wrangler tj forum. Been doing some reading on swapping in an older xj head in place of the cracked 0331 20002001 pos. Chrysler 4 0 rebuilt head amc jeep 91 97 7120 ebay i didnt need a core and the head that i got had the water ports welded before he surfaced the head. Came as a completely new,valves,springs,head cast is more solid than the factory cracked 0331 head. 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. 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. Its done all the time in the magazines, many bigname shops are doing it. I am currently replacing the cylinder head on my 01 xj with a clearwater cylinder head. Jeep v8 conversion guide chevy ford dodge engine swap.

As you can see here i am looking to swap out my 0331 head as its probably guaranteed done for. Jeep street and performance, classic rides, the daily driver, land use. Jeep strokers the 0331 head thread help out if you have one. Lift is not required for the jeep tj to perform the engine swap, but may be done for reasons external to the swap. These conversions take some basic planning and effort in their execution, but the results can be quite fantastic. Its a headtohead buildoff that starts with a track and dyno baseline. Just put your core head in the box that you received your newrebuilt head in and attach the prepaid peel and stick label. Xj jeep and the 99 to 01 models questions anandtech. Came as a completely new,valves,springs, head cast is more solid than the factory cracked 0331 head. 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. You can swap the 0331 head over to the 99 block but you need to get the 0331 head magna fluxed and shaved.

Promaxx performance oereplacement jeep inline cylinder. The gm gen iv series of ls engine took american v8 technology to a new level back in 2006. I would like to find out how to identify what head my engine has on it. Does anyone on here have any ideas as to anything that would pose an issue with the swap. Jeep diesel engine swap diesel tech diesel power magazine.