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Old 04-03-2012, 10:09 AM   #1
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2.5 tj v8 engine swap

Hey All. So after blowing the transmission in our 97 tj we decided we needed it to go faster. So here we are doing an engine swap, we bought a 93 Jeep Grand Cherokee( I know its not the idea donor) but we will make it work. I am new at this forum and still trying to find stuff on the engine swaps, i am sure someone has down this before. Can anyone lead me in the right direction???i am aware that we are going to get the motor mounts and newer computer for an 99-up dodge dakota, fuel rails, and intake manifold. but that should be the biggest thing shouldn't it?? And of course lots of beer (LOL)
Thanks EVERYONE!!!

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Old 04-03-2012, 10:12 AM   #2
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Hey All. So after blowing the transmission in our 97 tj we decided we needed it to go faster. So here we are doing an engine swap, we bought a 93 Jeep Grand Cherokee( I know its not the idea donor) but we will make it work. I am new at this forum and still trying to find stuff on the engine swaps, i am sure someone has down this before. Can anyone lead me in the right direction???i am aware that we are going to get the motor mounts and newer computer for an 99-up dodge dakota, fuel rails, and intake manifold. but that should be the biggest thing shouldn't it?? And of course lots of beer (LOL)
Thanks EVERYONE!!!
A Chrysler V8 would be the simplest, but your stock D35 rear will not hold up to V8 output, so plan on an axle swap as well...

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Old 04-03-2012, 10:20 AM   #3
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Yeah, I have been told that a chrysler would have been easier but we got this Cherokee for free so we figured it was just as well to use it. It can be done though right???Thanks for the response, the axles we are changing too
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Old 04-03-2012, 11:02 AM   #4
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Yeah, I have been told that a chrysler would have been easier but we got this Cherokee for free so we figured it was just as well to use it. It can be done though right???Thanks for the response, the axles we are changing too

Chrysler makes Jeeps you know.



You've got the right pieces for a start...
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Old 04-03-2012, 11:10 AM   #5
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Chrysler makes Jeeps you know.



You've got the right pieces for a start...

Oh My i just realized what i wrote...LOL So is there any reason you can think of that this swap won't work???
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Old 04-03-2012, 12:01 PM   #6
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Talk to HardcoreTJ and check out his build thread, called HardcoreTJ's mopar v8 swap
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Old 04-03-2012, 12:08 PM   #7
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talk to hardcoretj and check out his build thread, called hardcoretj's mopar v8 swap
thanks
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Old 04-03-2012, 01:19 PM   #8
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This is some great conversion consideration info:
The Novak Conversions Knowledge Base Gateway
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'99 Chilli Pepper TJ Wrangler "Mistress"
33x12.5 DuraTracs
Zone 4.25"
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Old 04-03-2012, 04:48 PM   #9
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So how'd it work out? I have a 97 TJ and someone gave me a 97 Grand Cherokee with the V8. I wanted to do the same.
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Old 04-03-2012, 05:05 PM   #10
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So how'd it work out? I have a 97 TJ and someone gave me a 97 Grand Cherokee with the V8. I wanted to do the same.
Its not done yet but we have the engine and transmission taken out of both jeeps so I will let you know how it goes, waiting on the wiring and things we are gonna need. But they tell me it can be done just going to need to buy some "Newer" model parts like computer and intake manifold.
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Old 04-03-2012, 08:16 PM   #11
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Yes please do, I'll be getting this cherokee within the next month and am really interested to see how it turns out. good luck
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Old 04-03-2012, 09:06 PM   #12
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Yes please do, I'll be getting this cherokee within the next month and am really interested to see how it turns out. good luck
i will post some pictures when done, it might take a bit though and a few beer!!!!
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Old 04-03-2012, 09:33 PM   #13
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The pcm you need will be a 98+ and can be found in a ram, dakota or durango. You need to make sure the ignition key is the skinny black one and not the fat gray key. The intake you have is fine! You just need to plug the egr hole and do the keggar mod on the runners and center plate. Also the injectors on the older v8 are bigger and run a little fat with the newer pcm. Also I'm not sure what transmission was in the 93 zj, but you may want to upgrade to a 46re out of a ram. Note if you use a 46re you need to be sure you use the correct flex plate for the tq converter. And using a newer harness with the newer sensors wouldn't be a bad idea either.

I used the advance adapters motor mount kit and have nothing but good things to say about their mounts.

The zj clutch fan works great, but you need a tj 4.0 fan shroud , V8 swap radiator, mid 80's v8 dakota upper radiator hose and the lower hose off the zj. Be sure you use the accelerator pedal cable off the zj as well.
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Old 04-09-2012, 08:55 AM   #14
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The pcm you need will be a 98+ and can be found in a ram, dakota or durango. You need to make sure the ignition key is the skinny black one and not the fat gray key. The intake you have is fine! You just need to plug the egr hole and do the keggar mod on the runners and center plate. Also the injectors on the older v8 are bigger and run a little fat with the newer pcm. Also I'm not sure what transmission was in the 93 zj, but you may want to upgrade to a 46re out of a ram. Note if you use a 46re you need to be sure you use the correct flex plate for the tq converter. And using a newer harness with the newer sensors wouldn't be a bad idea either.

I used the advance adapters motor mount kit and have nothing but good things to say about their mounts.

The zj clutch fan works great, but you need a tj 4.0 fan shroud , V8 swap radiator, mid 80's v8 dakota upper radiator hose and the lower hose off the zj. Be sure you use the accelerator pedal cable off the zj as well.
I am waiting on the advanced adapters motor mounts they are backordered until May 5, just my luck! But Did you do your own wiring or did you send it somewhere??
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Old 04-09-2012, 12:16 PM   #15
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I am waiting on the advanced adapters motor mounts they are backordered until May 5, just my luck! But Did you do your own wiring or did you send it somewhere??
I did my own. It took me about 8 hrs working off and on. I could easily do it in 1/2 that time now having done it. I guy on jf gave a good tip for the diy harness, use a sheet of osb to lay the harness out on and label every connection. Be sure you use the factor service manual from both the tj and the donor.
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Old 04-10-2012, 09:47 AM   #16
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This is what the poor jeep looks like now.....
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Old 04-10-2012, 09:49 AM   #17
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I did my own. It took me about 8 hrs working off and on. I could easily do it in 1/2 that time now having done it. I guy on jf gave a good tip for the diy harness, use a sheet of osb to lay the harness out on and label every connection. Be sure you use the factor service manual from both the tj and the donor.
So it not worth paying 700.00 to get someone to do it for me? You want to do it..LOL where would i get the manual??
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Old 04-10-2012, 02:13 PM   #18
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I bought mine on ebay. They will run you about $50 each, but sometimes you see them for half that, but those are rare finds. Other options are all data, which charges a yearly membership, but you can then just print off what you need. If I remember its like $20.00 a vehicle for the fsm. The last option is search this forum for people linking pdf copies.
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Old 04-14-2012, 10:41 PM   #19
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I bought mine on ebay. They will run you about $50 each, but sometimes you see them for half that, but those are rare finds. Other options are all data, which charges a yearly membership, but you can then just print off what you need. If I remember its like $20.00 a vehicle for the fsm. The last option is search this forum for people linking pdf copies.
I just figured to save me the time i am sending it to Backwoods to get done. I should have it back around the same time that i get the motor mounts.

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