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Old 07-22-2013, 10:40 AM   #1
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Question - 97 4.0L wrangler motor into a YJ

I have a chance at getting a fairly fresh 97 4.0L to replace my ailing 4.0L . What would it take to get it mated to the YJ? I don't believe it's a plug and play but for those that know - please share your thoughts.

Thank you.

Max.

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Old 07-22-2013, 11:08 AM   #2
It's a Jeep thing!

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Wish I could help but I cant. Bump for someone who can.

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1995, 4.0, 5 speed YJ, SOA, TC drop, 8.8 swap with 4.10 and LSD, e-grills bumper, 33" BF all terrains on 15" wheels.
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Old 07-22-2013, 12:08 PM   #3
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why not go to V8? how much are you paying for the new 4.0
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Old 07-22-2013, 01:08 PM   #4
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It's $500 plus shipping or I got to go get it. a V8 would probably require more serious work, no? I was sort of looking into something straight forward with least of pain.
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Old 07-22-2013, 01:13 PM   #5
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OK. I will ask the stupid question...Why do you think it wont work? other than needing the pcm for the new motor, it should be a plug and play type of thing. Motor mounts are the same, bell housing is the same, heads are the same so therefore the manifolds will bolt on.
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Old 07-22-2013, 02:07 PM   #6
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the newer motor is obd2, yours is obd1. simplest way to hook it up would be to use it as a long block with your fi, sensors, flywheel, etc.
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Old 07-23-2013, 05:41 PM   #7
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Quote:
Originally Posted by roadyrob View Post
the newer motor is obd2, yours is obd1. simplest way to hook it up would be to use it as a long block with your fi, sensors, flywheel, etc.

I agree. Use ur ecm, sensors etc and use the 97' block. Obd1 is way easier to modify too

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