4.0 upgrade started .. pulled donor motor

[Paul]

well i started pulling the 4.0 litre v-6 for my 89 bronco II today, after working all night 3rd shift last night i spent all dya working on pulling the motor and wiring harness, and i finally got everything unhooked on the motor, and was ready to pull it and i realized after attaching the engine hoist, the seals were blown oout of the hydraulic cylinder in my hoist and it was completely outof hydraulic oil........ so i didnt get it out fo my donor truck today but i do have everything ready to pull it out tomorrow..... so i figure i will get it out tomorrow, and have my B II towed home tomorrow and i will start pulling the 2.9 out of it the following day, if not tomorrow afternoon..........this is day 2 now with no sleep pulled double shift at work and spent all day trying to get that motor pulled today and i am at work again tonight after getting no sleep.......so tomorrow motor out......the rest is if i feel up to it......... but my donor truck has all the springs too so im thinking about changing them out too ................. whats your alls opinion .............. is it worth the effort ....... someone who has done this do you think its worth it to do, since i have no lift under my B II as of yet...

[kyle.recob]

I am new to the site, and I own two bronco 2, one is an 86 and one is a 84 now i dont know very much on the 4.0 swap at all and was wondering if somebody could give me heads up if anyone would like to do that it would be great thanks,
E-MAIL: rodoeboxer@yahoo.com

Thanks
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[Paul]

well from wjhat i know so far its been a pain in the ass for me but im doing it with no help and working 12 hour days, the biggest rpoblem i have found with it is getting sleep...... but check back with me in about a week, i have my donor 4.0 now ........... and im going to start pulling out my 2.9 tomorrow........ so when i get around to getting mine in i will let you know if i found any problems doing it... becasue i will post any problems here.

[Paul]

ok i ave the 2.9 out now, and it wasnt so bad, had it out in a day, just been very busy at work, also had to make an engine hoist since i didnt want to spend the money to buy one, i built my own when i get a chance i will set up a site with pics of the ingine swap... including the engine hoist, it took me 7 hours to design my own hoist system ....... which worked awesome by the way....

[Paul]

4.0 is in plce and started hooking everything up over the weekend while i had some time to work on it, seems as though everything bolted in just fine.

[Paul]

alright my 4.0 is in, the things i found that need to be taken from the donor vehicle are as follows....

get the fuel lines from the explorer from the fuel filter to the motor .... the 2.9 has a male and femal coupling but the 4.0 has two female couplings.....

get the throttle linkages as the ones from the broco II does not match up with the explorer bracket...

all the accessories like alternator, powersteering, since the 4.0 is serpentine belt and 2.9 is v belts....

complete wiring harness for the motor in the 4.0 v6........

and you better have a good wiring schematic for both motors!!! because the wiring doesnt mach up and its a pain it the neck

other than that everything bolts in just fine other than the starter for the 4.0 is on the opposite side of the truck than the 2.9 was on.... ....

im still working on getting all the wiring finished up, but that was the things i found that need to be taken off the explorer for the 4.0 Liter v6 upgrade so far.....

and get the radiator since the 4.0 is a dual flow element and the 2.9 is a single flow element......

[DBrown]

I used the throttle cable from the 2.9L on my 4.0L conversion...my 4.0L came from an areostar but it shouldn't matter...

[Paul]

my 4.0 came from an explorer and i had to get the one out of the explorer becasue the spring adjust was longer so it had no movement for acceleration but its good now.... just need to get the cranksensor to fire up the motor ....... damn ..... DIS

[Paul]

wooohooooo got the motor started today was nice to hear it fire up ..... will be nicer to have it moving while off road again instead of just sitting there...... :redneck:

[Paul]

so did you use a manual or auto tranny? becasue i used my manual tranny and didnt remeber to put in the shim plate from the 2.9 and it seems my starter is dragging, if you used the manual, did you put in the old shim plate between the tranny and the 4.0 engine? and did you have and issues from it?

[DBrown]

I used my stock manual and reused the shim plate. you did use a 4.0L starter right?

[Paul]

yup i used the starter from the 4.0 on the motor, it was off an automatic tranny, but i have had lots of problems with it, it seems to be dragging something inside and now when i try to turn the 4.0 over in the truck it sounds like the starter is spinning and whinning and not making a connection to the flywheel at all, i know that is possible so im wondering if its hung on something inside and not extending out, so tomorrow im pulling the tranny for a third damn time, i think i might just find some flat washers and put between the motor and the bell housing, i know in the 2.9 the damn shim plate rattled and used to drive me crazy anyways, but so you know when i started it earlier and ran it, well it did quite well at first, drove great, parked it then next time i went to start it i heard it clank the plate, then spin free like it couldnt extend into the flywheel, the starter runs but doesnt spin the engine over, hoping its the solenoid on the starter not extending... i will find out in the morning when i get home fro m work... and for some reason my 4.0 idles very fast ......... way too high...... any ideas what would cause it, and it did the same on the 2.9 when it was in there it always idled fast too.....

[Paul]

since you seem to know so much about those flywheels and starters, i was wondering ....( serious question)... can the 4.0 Liters flywheel from the auto tranny be used with a manual transmission, i honestly dont remember the shape and any bolt diefferences and if it was different as i did most of my upgrade without sleeping for 2 days at a time, i seem to recall for some reason i dont think it would, but i honestly cant remember for sure, so i used my 2.9 Liters flywheel..... but with the problems i have been having lately i was just wondering becasue i might have a need for a different flywheel depending on how mine looks when i pull the tranny back out. now understand i have the auto tranny but i hate automatics, i just prefer a stick shift, i always have, i bought my BII specifically becasue it was a 5 speed, which is really nice behind the 4.0 L major difference in the power factor of the truck, makes it nice to drive when it will start ...... just got to convince it that it wants too ...

[Bob Myers]

If you used the 2.9 flywheel and original tranny, and the shim plate,, put the original 2.9 starter back in it. I'm using a 2.9 manual starter on mine, it has a A4ld flexplate and a C5 tranny.
No the 4.0 auto flexplate will not work with the manual tranny.

[Paul]

i know the auto flexplate wont work i was asking about the flywheel for the 4.0 when it was an automatic, and the 2.9 starter grounds out on the oil pan if i try to use it, so i cant do that either, simply becasue the 2.9 starter has the solenoid on the firewall and 4.0 has the solenoid on the starter, the battery cable lug grounds out on the oil pan if i use the 2.9 starter....