conversion to mpi

[135SoHc]

found a flex fuel spirit at the yard today, being mpi and all could I pull all the stuff that makes it MPI and do a direct swap over to my 2.2 tbi shadow. would search more but I need to know asap as the car is going to the crusher really soon

other than the obviouse stuff, intake, injectors ect.. what exactly would need to get pulled

[turbomini]

all wiring you'd probly want to get the fuel pump also i'm not to sure if they are the same or not..

[capev86]

all the underhood wiring computer. if you have a pre sbec 2 car then you will have to completely custom splice in the harness, not just plug in the computer and splice in the injector harness. also need a late T1/T2/mpi/ffv intake manifold and associated hardware.

on my 86 k wagon i will have a 90/91 sbec 1 harness with a mexican mpi cal. i not only have to splice in the engine controls, but i want to keep the ignition coil on the passenger frame rail...so i will have some creative wiring to do.

[Lone Eagle]

You will need to splice all the interior wiring, as the connectors are different on the P bodies and AA bodies.

Fuel pump in the FFV is same as a turbo pump, just with a SS housing. The injectors are referred to as "poor man's +20s". The FPR is same as turbo, just SS. Methanol is highly corrosive, thus all the fuel components are SS. If you're ripping the parts from a junker, get all the following:

-fuel pump
-all frame fuel lines. they are stainless
-underhood wiring all the way to the bulkhead connector
-set of Pbody bulkhead connectors(there are a few of them, as the Pbody doesn't use a single plug like the AA body)
-SBEC from FFV car(or a T1 SBEC, as they are the same, with the exception the FFV doesn't have the software for the wastegate solenoid. Car will run fine with T1, just don't kick WOT too much.)
-complete head with manifolds. The valvetrain is the same as a turbo car, with all stainless valves and 3-way backcut job the turbos got.
-fuel rail with SS lines and injectors. Order a new set of O-rings, but ask for a set for a turbo car. FFV O-rings are different, and cost like rip.
-Wiring diagram for your car and a FFV car, so you can do the splicing right. Some of the colors won't match.
-Airbox with all hoses. If not there, simply get a setup from a T1/T2 car. Same airbox and hoses.

Keep us posted on this one. We have several people doing MPI conversions here and on allpar. Any/all info is helpful.

[UnaClocker]

Grab the whole intake, that includes TB, injectors, fuel rail, grab the fuel pump.
Go buy a MegaSquirt. Can have it up and running in a weekend, tune it in an hour to be driveable, and have the tune perfected inside of a month of freetime.

[135SoHc]

OK, will be calling the yard tuesday to see what they will charge for the above mentioned items. That will be the driving factor as to whether or not this will happen.

Cylinder head: so with that, is the cylinder head required to convert to MPI or will my stock 2.2 tbi head suffice. I know the benefits of the better constructed head but this car is my DD so I cant be tearing it apart and getting in deeper than I can do in one weekend, and with the motor having 222,100 miles is there really anypoint in putting a fresh cylinder head on a tired block really dont want to open a can'o worms that comes with a new HG

wiring: did the P bodies ever come with the bulkhead style connector, mine is just a single wire bundle passing through a rubber boot, no bulkhead style connector

fuel lines/pump

the yard has a strict no-under body parts can be pulled unless by them, and they also pull the tanks (and pump) and with the removal of the tank they chop the fuel lines so I'm not sure if those are possible to get intacted and complete.

computer, my P is a 5 speed and the parts car is auto ??


Dont mean to want to sound cheap about doing this, just want to do it the most efficient and cost effective way

[UnaClocker]

There is no difference in the head design between MPI FFV cars and the TBI cars. You'll have to remove the head to do the install, but other than that you won't have to do anything else to the head.
The computer will work, it'll just store an error code about the lockup torque converter not working. It's the least of your problems when it comes to all the sensors that an FFV car will have. Good luck getting them all, and getting them all to work. It's going to be a wiring nightmare that'll make Megasquirt look like a beginners project.

[TurboTurismo]

Quote...It's going to be a wiring nightmare that'll make Megasquirt look like a beginners project. <<That was funny.. Good stuff UNA, I didnt go FFV but I did go TBI before Turbo... Looking back now it didnt make sense.. Just don't understand going for an extra 13 or so hp with an 8v mpi wiring nightmare......sry

Robb The "MO": 84 Plymouth Turismo..::2.5 CB MPI INTERCOOLED TURBO/ Updated Aug 30/07 - London, Ontario

[DaytonaTurbo87]

I agree, the wiring will suck. I converted a carbed L body harness over to T2 using a junkyard lebaron harness. It worked and it ran, but I never liked the way it came out, so I junked the custom spliced harness in favor of a nice factory turbo L body harness. The moral of the story is, splicing complete engine wiring harnesses sucks. If it's not going to be a plug and play(or extremely minimal changes), I wouldn't bother with it. After messing around with custom wiring, then finding out how lousy it is trying to tune a stock ECU with D-Cal or Chem, I swore never to mess with a stock ecu again. Yeah, I've got a Megasquirt I'm finishing assembely of.

Personally, I would rather go thru the work of swapping motors than dicking around with rewiring harnesses, which leaves you stuck within the limitations of the stock ecu. Lots of hassle either way.

[135SoHc]

Called the yard, waaay to much $$ for the parts needed to pull this off. This is not going to be going any further.

this thread can be deleted.

[reliantwagon]

aww thats soo depressing... the idea died lol

[UnaClocker]

Better than being $500 into a bad idea before gaining enough knowledge to understand WHY it's a bad idea.

[Lone Eagle]

So true. I've had a couple of projects get out of control before I threw up both hands and said fark it. By then, it was too late. had to cut my losses and eat crow.

[pmcnamara]

Quote:

Originally Posted by 135SoHc Called the yard, waaay to much $$ for the parts needed to pull this off. This is not going to be going any further. this thread can be deleted.

where is it ?

[135SoHc]

the car is/was (not sure if its been scrapped) at Brandywine Auto yard Ransom (appropriate name imo) motors yard. in brandwine Maryland

http://www.brandywineparts.com/ransom.htm