4.0 V6 swap

mccutcheon4 · Post by **mccutcheon4** » Sat Apr 15, 2006 6:42 pm

Willl the 2.8 or 2.9 stick flywheel bolt up to 4.0 ? Is it balanced the same ?

Thanks

Post by **Nobody** » Sun Apr 16, 2006 5:52 am

I believe they are all neutral balance and interchangable. Maybe someone else can say for sure.

DBrown · Post by **DBrown** » Thu Apr 20, 2006 7:11 am

you can bolt the 2.9L flywheel to the 4.0l and it will work but you will need to use the auto starter on the manual transmission. I think I went over that in the write up I did...not sure though I haven't looked in awhile.

mccutcheon4 · Post by **mccutcheon4** » Thu Apr 20, 2006 11:09 am

Thanks, how do I find that write up ? Have you done a 4.0 swap in a B2 ?

DBrown · Post by **DBrown** » Thu Apr 20, 2006 12:09 pm

its on the home page...yeah I did it before I swapped over to the FSB frame

mccutcheon4 · Post by **mccutcheon4** » Thu Apr 20, 2006 1:12 pm

Wow ! lots of good information on the home page. I skipped right
past it when I joined and made a short cut direct to the forum, so I was missing all of the usable information there.

I assume one of the members is USMC ?

Thanks again

Post by **Nobody** » Thu Apr 20, 2006 1:42 pm

This is my little corner of cyberspace. I haven't had time to add any new stuff lately, much less go wheelin.

I gave Uncle Sam a few years in the Corps.

mccutcheon4 · Post by **mccutcheon4** » Tue Apr 25, 2006 11:46 am

Does the 4.0 have a hole cast in back of the block for a distributor ? If so does the cam have a distributor drive gear ?
Some motors that have distributor-less ignition, have cam position sensor where the distributor would have been. I just wonder if that's the case on the 4.0 ?

DBrown · Post by **DBrown** » Thu Apr 27, 2006 7:52 am

the manual says that some do, but the one I had did not. I have talked to people about using a 2.9L distributor and setting up a different system but I realy see no point in doing so. when it comes down to it, it isn't that hard you just have to take some time to get it done. the DIS system is a good system and you can get small block numbers with 21 MPG...

ranger5.0 · Post by **ranger5.0** » Thu Apr 27, 2006 10:44 am

what runs the oil pump on the 4.0

. I know the 2.8 is ran off of the distributor.

DBrown · Post by **DBrown** » Fri Apr 28, 2006 6:37 am

honestly I never tore into it that far...I know there was a plug where the sensor was supost to be so I am assuming that is what was in there. if you try to do that you could run into the problem like the 5.0L's have when converting over to the roller cam. there are 2 different gears and you have to get the right one or it will eat it alive. but like I said I never tore it down that far so you are in an unknown area for me...

mccutcheon4 · Post by **mccutcheon4** » Fri Apr 28, 2006 7:34 am

The reason I asked is, If the 4.0 can be converted to a distributor, then using the Mega squirt system would be an option. I have done two EFI conversions using OEM CPUs and harnesses. They were both a major pain. I was never 100% satisfied with either conversion. I have a buddy using Mega Squirt on his 4.0 I-6 in a CJ, it is very slick. Stand alone ignition, no VAM, no EGR, best of all, its completely programmable.