1989 YJ New Engine Options??? - JeepForum.com
 
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post #1 of 13 Old 02-15-2010, 08:06 PM Thread Starter
smitty3213
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1989 YJ New Engine Options???

I have a 1989 YJ and I want a to put a new engine in it. It currently has a 2.5L 4 cylinder engine.

What size engine can I go up to and still use the stock transmission it has in it now?

Price is the most important factor when buying said new engine, does anyone have suggestions as to when to find inexpensive engines?

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post #2 of 13 Old 02-15-2010, 08:09 PM
leftlanetruckin
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Your only choice is the same engine, if you want to keep the POS tranny you currently have.

Martin

1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover with a 6.0 LSx
1994 YJ, 4.3/700R4/OME SOA, etc
Western Star 4900EX 4 axle.
4.3/700r4/new frame buildup (YJ)....

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post #3 of 13 Old 02-15-2010, 08:32 PM
Castr8r
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Lefty said it right. So, why do you want to change?
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post #4 of 13 Old 02-16-2010, 02:23 PM Thread Starter
smitty3213
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I got great deal on it, $900 but when I bought it the engine was blowing oil!
Tyler
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post #5 of 13 Old 02-16-2010, 02:28 PM Thread Starter
smitty3213
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Ok were thinking I need a engine upgrade....that sounds great to me! But with a engine upgrade comes a transmission replacement too, so my next question is where can I find a good deal on such large items like these? Do you think i can get away with going used or do I need to go new? If it helps this is NOT my everyday vehicle, this is my weekender/ mudtruck......
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post #6 of 13 Old 02-16-2010, 05:24 PM
leftlanetruckin
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Have a look at the build thread in my sig. That is for a Chevy 4.3/700R4 into my old YJ from a few years ago.

Martin

1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover with a 6.0 LSx
1994 YJ, 4.3/700R4/OME SOA, etc
Western Star 4900EX 4 axle.
4.3/700r4/new frame buildup (YJ)....

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post #7 of 13 Old 02-16-2010, 05:48 PM
RustedWrangler
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Look at all your options, including selling the current YJ and getting a 6 cylinder(might actually cost less).
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post #8 of 13 Old 02-16-2010, 06:55 PM
wish_bw
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I have a chevy vortec 4.3 in my yj, I got away with running my stock ax 5 tranny for awile never did blow up on me but i was pretty nice to it. You could find a 4.3 in a salvage yard for a decent price i would think, but you are going to spend money on a adapter plate and new motor mounts, and those are not cheap. After doing all the work to mine i kinda wish I would have just bought a jeep with the 4.0 in it and fuel injection, I would have been money ahead, just something to think about.
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post #9 of 13 Old 02-17-2010, 07:52 PM Thread Starter
smitty3213
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I've been looking around online for 4.0L engines. Can anyone offer any advise for buying big items this this online?
Tyler
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post #10 of 13 Old 02-17-2010, 08:05 PM
green89yj
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I'll sell you one if you wanna drive up to Georgia and get it. came out of a Cherokee but I don't have time to do the swap.


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Herc.Custom Green paint. RC 4". 5 Goodyear 33X12.5 MT/R w/Kev. Cragar V5's. Corbeau Moab seats. Optima Yellow.XRC8 Comp Winch. XJ 4.0/AX15
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post #11 of 13 Old 07-23-2017, 09:05 PM
Lucyshama1
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1989 jeep yj

My husband wants to buy a 1989 yj with a blown motor they are going to give us a rebuilt Amc 6 cyclinder with the deal has anyone have any suggestions or comments 3000 Canadian my husband going to do the swapping. I think he is going to break the bank and spend too much any help with this would be great
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post #12 of 13 Old 07-24-2017, 08:31 AM
mike134
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Quote:
Originally Posted by Lucyshama1 View Post
My husband wants to buy a 1989 yj with a blown motor they are going to give us a rebuilt Amc 6 cyclinder with the deal has anyone have any suggestions or comments 3000 Canadian my husband going to do the swapping. I think he is going to break the bank and spend too much any help with this would be great
If the engine comes with a warranty, and the frame is not rusted out, then you should be good to go. Does it have an AX-15 transmission or Peugeot BA10/5? Make sure the engines and transmissions mate or you will need an extra adapter. As far as engine swaps go, this should be as straight forward as it gets.

He will need to buy/rent/borrow and engine hoist, and will need the help of a couple friends. Depending on how good he is at negotiating, the engine swap should run you about 2 or 3 six packs of beer.

The "rebuilt engine" is the questionable part. You don't know how well it was rebuilt until you get it installed and test it out. The price might be right, so I wouldn't say you should totally rule out buying the unwarranted rebuild, but it would help if they gave you 6 months 5,000 miles or something similar!
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post #13 of 13 Old 07-24-2017, 09:19 AM
project_mercy
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Quote:
Originally Posted by mike134 View Post
As far as engine swaps go, this should be as straight forward as it gets.
Depends if the Jeep was a 4-cyl or 6-cyl when it died. If it was a 4-cyl then they would have to move the engine mounts.

With your help I will resist the urge to buy a chrome grill guard for yet another day.
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