build thread for 2.8 carb to chevy tbi.

[cammeddrz]

you'd have to google it, that's all I did to find those pics

 

[cammeddrz]

the Euro 2.8 came with MPFI, and 6 more horsepower than a US 4.0

 

[Lil-Pony]

Wth the euro 2.8 was fi? I have to find photos now. All im pulling up are the cars tho... My search continuea

 

[cammeddrz]

yeah, only came in cars. Europe really wasn't big on trucks/SUVs, especially in the '80s

 

[Lil-Pony]

Thats really interesting. Gave up on the pics, got better things to do.

 

[Lil-Pony]

Got home and adjust the tps as far as it will go. Not much meat on the sensor for me to shave off with a drill and still fill safe about it. Didnt get to the timing cold front blew in earlier today went from a nice 70 degrees to almost freezing. It bloody hard to work with frozen hands.

 

[cammeddrz]

From what i read, neither yours, nor your dads ever ran "right". Your woes were literally the entire reason i sought out to find a better way.

You did two, i did two. The difference is:
both of Mine worked right out of the box. no tank swap. And you can do it in under 10hrs.

 

[Lil-Pony]

Is that directed at me?

 

[cammeddrz]

No, I'm just now responding to dangerranger from like 2 pages ago.

 

[cammeddrz]

Now danger you clearly don't understand this. If the 3.8 doesn't have an iac, that is irrelevant if you use an ecm that needs one (such as the 2.9 ecm, or the gm ecm) to run the 3.8 throttle body.

 

[dangerranger83]

Not possible, here's the guy I said that did the 2.9 computer setup hooked to a 3.8 tb on his 2.8 in his b2. All in all not much more rigging to make things work and adapt. Great tech write up on it too.

http://www.broncoii.org/techpages/2.8fi/

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[Lil-Pony]

here is the issue...
TFI
the main reason i hated the old computer controlled carb, they work great till one day you stranded trying to replace it on the side of the road if you're smart enough to keep a spare handy

 

[dangerranger83]

The heat sync paste would dry up and cause the tfi to over heat. But can they be remotely mounted to a better heat sync so long as the connections from it to the dizzy are made?

My biggest problem was not only the lack of power the 2.8 has, but the after market is very small and parts are becoming harder and more expensive to find too.

Good thing about the 5.0 I'd since they have been made so long you can go from a simple setup, like mine, to efi (which I'm converting to in a coupe of years) with many other options but also there are allot of them too.

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[cammeddrz]

Not possible, here's the guy I said that did the 2.9 computer setup hooked to a 3.8 tb on his 2.8 in his b2. http://www.broncoii.org/techpages/2.8fi/

I never said you couldn't use the 2.9 ecm, I said you couldn't use the 2.9 intake manifold which is 100% true. which I said in response to you vaguely saying "you can use the 2.9 stuff" (you did not specify at that time you meant using the 2.9 ecm with the 3.8 throttle body, which led me to believe that you meant using the 2.9 fuel injection). and I did say that I saw the 2.9 ecm with the 3.8 throttle body one time, and I was referring to the very same tech article that you linked to. which has no supporting thread, and is several years old, and as I recall broncoii.org actually copied, and pasted from yet another site.

what I am getting at is that it is unsubstantiated to say the least.

not much more rigging to make things work

did you completely miss the IAC jury-rigging on that? I mean, I can easily see how you missed it....it takes up a quarter of the write-up

btw when the iac is used on a vacuum line instead of properly engineered venturi into the plenum, it causes an erratic idle I've tried this, I even used the same IAC valve, I even ran it to the EGR port, and everything.

you seem to miss al lot of content when you read (shown in red),

and most of all:

here is the issue...
TFI

^^ no joke dude. how a person can argue against that is beyond me

The heat sink paste would dry up and cause the tfi to over heat.2

all fuel injected GM engines from TBI to this day use modules with the exact same heat sink compound, and they will overheat and fail if the compound is not used, but I've never seen the compound "dry up" I have a 1998 GM that after 15 years of service, I just barely replaced the module/heat sink compound. if TFI is so sensitive to things that other designs are not vulnerable to.....that is not a defense of TFI, it is yet another nail in its coffin

 

[dangerranger83]

And it stuff like that with the 2.8 that I went 5.0. No jury rigging of any kind on the engine to get it to run whether it be the factory feedback, duraspark, tin setup from a Chevy, etc... that the 2.8 needs to survive. As great of engines as they are, most will agree they aren't worth messing with anymore since why you see a lot of guys going 4.0 and 5.0 if they want an EFI engine, even those with a 2.9.

And saying the heat compound doesn't dry up doesn't happen, think again, it's a common question asked on here and a common answer.

Sorry to Jack the thread, now back to the topic.

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