[2.5L TBI Jeep: Will an MPI Conversion Require a New Flywheel?]

Thanks Moses.  Im thinking its going to work.  As a reminder, I am converting my RENIX TBI to a MPI system.  I have everything except that higher pressure fuel pump.

[2.5L TBI Jeep: Will an MPI Conversion Require a New Flywheel?]

Hi Moses,

 

To confirm; the fuel pump needs to be changed when converting from TBI to MPI.  Per your link, you listed the Chrysler #'s 4637192 & 4637193.  On the linked site, they indicate the kit is for a wrangler.  Do you think the same kit will work in my 2.5L Comanche fuel tank?

 

 

http://www.fuelpumps.com/-c-0/19911993-jeep-wrangler-fuel-pump-4-cyl-25l-p-efi-chrysler-s-4637192-4637193-p-2210.html

[2.5L TBI Jeep: Will an MPI Conversion Require a New Flywheel?]

Thanks Moses, and darn! 

 

I will be converting to 4X4 in the future but I like to do small bits at a time rather than all at once.  Since the flywheel needs to be changed the best time is when I change the transmission.  So it seems like I will be doing all at once: change transmission, change flywheel, add MPFI, all required components, transfer case, and drive shaft.  I have the other distributor so that will be part of the swap.  and oh, the fuel pump too.  yikes!

 

I was able to scrounge a picture of the Renix flywheel before I swapped the engine last time.  Upon inspection, there is definitely a difference: the RENIX has a bunch of rounded teeth (lack of better word) whereas the MPFI FW has four sharp notches for the CPS to work from.

 

 

[2.5L TBI Jeep: Will an MPI Conversion Require a New Flywheel?]

Hi 4WD Mechanix,

 

I love the site and am so happy you are fielding questions from common folk like me!  Your troubleshooting guide for the 2.5L TBI helped me turn my limping MJ into a reliable daily driver!

 

Current set-up:  1987 MJ, 2.5L with AX-4 manual transmission, 2WD.

 

Future:  I want to convert to the multi-port FI.  I have all the equipment, ECU, harness, manifold, etc., from a donor engine.

 

Question:  Do I need to change the RENIX flywheel to the MPFI flywheel?  I have the MPFI flywheel on my work bench (the RENIX is in the truck), but whether the flywheel needs to be change will affect when I do the various upgrades.  A flywheel change requires me pulling the engine.

 

Thanks again!