build thread for 2.8 carb to chevy tbi.

[cammeddrz]

I'm worried that I Fried the ignition module.

rico's first one fried too

 

[Lil-Pony]

rico's first one fried too

if its fried i just wont have any spark correct?

 

[RICO9]

dont know how to route all the vacuums so some help on that would be great!

The MAP hooks to the far driver side port on the front of the TB, all the rest are plugged.

 

[RICO9]

if its fried i just wont have any spark correct?

Correct. This caused a minor headache for a while.

 

[Lil-Pony]

The MAP hooks to the far driver side port on the front of the TB, all the rest are plugged.

Great to know what about the pcv valve and the vapor canister, also does the canister need like a vacuum resistor/reducer?

 

[RICO9]

I don't know. I just got rid of the vapor canister.

 

[Lil-Pony]

Any one else want to chime in.
Btw i should be able to retry a second start run by thur.

 

[cammeddrz]

if its fried i just wont have any spark correct?

not every time, the more likely occurrence is that you will have spark, but it will erroneously tell the ecm to trigger the injectors, rico's would flood out because the injectors were firing waaaaaay too much

this is because that module is also what takes signal from the pickup coil in the distributor, converts it to a square-wave signal that the ecm can interpret and fire the injectors every third spark.

 

[RICO9]

I could've sworn that we weren't getting spark when the icm went bad.

 

[cammeddrz]

remember it would run if we just disconnected the injectors so it couldn't dump anymore fuel?

it was just dumping way too much fuel, and would flood. we had to disconnect the injectors so it could fire up and clear-out the fuel.

 

[Lil-Pony]

GREAT NEWS!!!!
so the smoke was caused by a lose ground for the ign module and she is running, and pretty good may i add.

 

[dangerranger83]

Let's hope she does good on mileage, performance, etc...

I did a tbi swap to my old 2.8 years ago but had the 3.8 setup. I had poor mileage and at WOT heavy fuel usage.

Soon after, I ditched the set-up and went duraspark but after finding out that the Chevy s10 had a 2.8 with tbi, always wondered how hard it would have been to get it running on a ranger 2.8.

Glad to see that it is possible and gives the 2.8 another reason to stay alive.

My old 2.8 got replaced by my 5.0 a year ago this month, kinda miss the old lifter tick.

Sent from my rooted SPH-D710 using Tapatalk 2

 

[Lil-Pony]

Once she stands on her own she is going to breath easier with some edelbrock headers put on her, I'm going to try and wrap things up this weekend. I lost the damn wire harness grommet so to the junk yard I must go unless some one has a spare. Other than that timing seams perfect. Going to check it with a light to make sure. Have to figure out still where the PCV valve and vapor canister vacuum lines hook up. Then hope the air cleaner fits under the hood. Rico/cammedderz did y'all have a body lift on when y'all did this swap?

 

[cammeddrz]

Let's hope she does good on mileage, performance, etc...

I did a tbi swap to my old 2.8 years ago but had the 3.8 setup. I had poor mileage and at WOT heavy fuel usage.

Soon after, I ditched the set-up and went duraspark but after finding out that the Chevy s10 had a 2.8 with tbi, always wondered how hard it would have been to get it running on a ranger 2.8.

Glad to see that it is possible and gives the 2.8 another reason to stay alive.

My old 2.8 got replaced by my 5.0 a year ago this month, kinda miss the old lifter tick.

Sent from my rooted SPH-D710 using Tapatalk 2

I read your thread (lots, of pages long as I recall ) a couple years ago when I had this idea. it seemed like you had issues with getting it running right. I remember thinking "of course, a 3.8l is 35% larger in displacement, and probably dumps 35% more fuel too....." in fact your thread is largely what gave me the idea. because I was like "why not use tbi from a 2.8l engine.....chevy made one". so I went to rico and said "I have an idea. lets do it on your truck" (I already had a v8). Rico also had just returned a part to a junkyard and he was like "I have a credit at the junkyard I have to use"

so we went to the junkyard, pulled the parts,

I then studied service manuals, and ecm pinouts, and came up with a game-plan

the rest is history.

Rico/cammedderz did y'all have a body lift on when y'all did this swap?

yes, I believe rico had a body lift at the time

 

[Lil-Pony]

yes, I believe rico had a body lift at the time

well if the air filter doesn't fit under the hood i guess ill be doing a body lift, at first i was planning on a hood cowl but i dont think that would look to good.