Is anyone using the Ford Racing mass air conversion kit on a 351W engine?
Part # (manual trans) M-9000-T50 or (automatic trans) M-9000-T51
Those kits are designed to for 5.0L and 5.8L engines. According to the instructions they work for both firing orders.
I'm currently replacing my 1991 5.0L and installing a 1989 5.8L engine.
My question is will this kit work with the new 5.8L engine, being that the firing order is different and I'm changing the injector pulses from bank to sequential order?
Any advice would be helpful.

Thanks,
Jerry D.

 

Yeah.. I have been running one for 8 years now. I had to change the injector firing order on the overlay harness because the I got the kit for the non-HO order(didn't even know they made different harnesses for the 2 firing orders at the time). This is dumb easy as long as you can use a soldering iron, just need to move 4 wires.
My 5.8 runs like a stock motor, except it's got more power.

 

How much do those conversions cost?

 

Paul,
Awesome! I finally found someone that has the same setup as me...
Can u just break it down for me what I have to do?
I suck at soldering so I'm gonna have my buddy do the job for me. And Idon't want to explain it wrong to him.
Thanks in advance!
Jerry D.

 

Jake,
I think I paid around $600 at the time...but I think Ford Racing stopped making the kit. Thats what I heard anyway.

 

i've bought the same kit, about 5 months ago , new..I did the same thing Paul did , switching 4 wires, and soldering them , for the 5.8 firing order, which is the same as the H.O. order....a company in Mich. Called "Dunnrite performance".....Ford Racing gave me his phone number, and I called him, a REAL good guy..........if u have a E4OD tranny, you will need a Baumann Controlls computer "BAUMANATOR" for that too....A DAMN good product, if u ask me !!!!...all together cost was around 900$

 

Wayne,
Did u solder the 4 wires yourself or did u send it out? I can't solder for sh&t and auto wires scare me...
I just need to know what exactly has to be done so I can pass the info on to my friend who is doing the soldering.

Thanks,
Jerry D

 

So you need to switch the wires for injectors 5 & 4 and 3 & 7, the idea is to create the 13726548 order from 15426378. You can use a multimeter to identify which wire belongs to which injector at the computer end, label them and then strip off any weatherproofing before attemptng to move the wires. You can see from the pic below I applied black silicone sealant to the board after making the modification.

 

hey paul, I just found the wires in the harness, between the connector, and the injector, and swapped the four wires, and then soldered them...the key to a good solder is to heat the wires, then put the solder to the wires when they are hot and it will melt to them..

 

sounds good!
I'm gonna give it a try this week.
Thanks for the pic! I know its a pain in the azz taking that harness off.

Jerry D.

 

Sorry to go over this again guys. I think I'm over thinking this.....I just want to make sure I'm getting it right.

The # 5 injector wire shoud be removed and soldered in # 3 position on the circuit board.
The # 4 injector wire should be moved to the # 7 position
The # 3 injector wire should be moved to the # 5 postion
The # 7 injector wire should be moved to the # 4 position.

And the numbers on the injector plugs will still go in the 1-2-3-4 --- 5-6-7-8 positions
Jerry D

 

Yep.. you got it.

 

Paul,

Thanks again!
Ok, so i removed the overlay ...no prob. I had to remove some black sealant to expose the solder points on the circuit board....must have came from Ford like that.
I ID and marked all 8 wires and the 9th wire (common wire) on that side of the board.
Now it's solder time!
Which would be better....cut and swap the wires approx. 5-6" up from the board or solder and swap directly on the circuit board?

 

Better to remove the wires from the board and put them back where you want, connections in the wires will always corrode and be a source of problems. BTW.. a solder removal tool or solder wick will help here, you can heat the joint and suck out the old solder, and then apply fresh solder after you place the wires. You don't need a monster soldering iron either, a 15w or 20w unit is plenty.

 

Hey paul, I just swapped the wires about 6 inches from the circuit board, soldered them , and used heat shrink insulation over them, shouldnt have any probs, should I ?