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2.9 to 4.0 sawp help request


namless_truble

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doing a 2.9 to 4.0 swap i know its a direct swap except the wire harness has anyone done one to point me in the right direction with the harness splice?
 


f6boomer

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Search

Search this site. Read everything in Tech section and search threads. There is an engine swap thread lower down than Exp/BII thread, lots of questions already answered.
Once you have done that there are Many fine people here who will answer specific questions.
What year "from" and what year "to" are big factors along with trans options.

Good luck
 

unoleisu

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Don't forget to ducument what you are doing, and post details! (pics, ect) Anything you have to do that was different will help the next guy! I am planning to do the same swap, and am particularly interested. :)
 

namless_truble

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4.0 is from 92 explorer going in an 86 bII. thank you for your responses. i will take pics and notes hoping to get started on this next weekend picking up the donor truck this one.
 

trail B2

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92 explorer is a good one the first question is to change dashes or not.I did a 93 ranger yours is better.
 

namless_truble

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i have the whole truck at my disposal except body panels and rearend should i swap the dash?
 

unoleisu

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I have a concern with mine that if I swap the dash, then I can no longer use the existing fuel gage. Since my BII's dash is nicer thean my Exp's, I'm looking more towards just modifying the harness. My second concern is what to do with the 4.0 harness computer, which will not go where the BII's is now.
It's more about function over form for me. I need all working components, and not so concerned with appearances.
 

slow96gt

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I got my fuel gauge to work with the exp dash just a 1/4 tank ment empty lol
 

unoleisu

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I got my fuel gauge to work with the exp dash just a 1/4 tank ment empty lol
I guess that could work, if you don't forget, or let your wife drive it. Then again a dipstick could be installed too.
I kinda like my working gauges.:icon_surprised:
 

Peterbilt

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I did an 84 2.8 to 4.0 swap in my B2 the dash looks good but you need to cut a larger hole in the firewall for the other colum and one for the round bulkhead plug. But seeing as you have the whole explorer i would go with all the factory explorer wiring it takes a longer to do if you want it dont right. Its not a weekend swap really lots of fiddling around but in the end its worth the effort if you take a look at my project dirty white boy you will see ur alot better off your starting with a 2.9 and the factory explorer computer should be able to mount of the pass side kick pannel just use the explorer bracket to mount it.
 

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