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  #1  
Old 02-02-2006, 07:44 AM
Aphelion79 Aphelion79 is offline
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Default Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

Hey guys! I actually own a Heep and was browsing around on my normal forum to have one of your members point me in this direction to see if any of you know anything about getting my little 4-cyl to say TBI or MPI?

Its a Pontiac Iron Duke 151 CID 2.5L 4-Cyl. with the Rochester Varijet II carb (2 bbl)...

Yeah I know its not a scout, but if you guys have any info for me on that, it would be appreciated!


-Thanks,
Matt
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  #2  
Old 02-02-2006, 01:00 PM
Bill USN-1's Avatar
Bill USN-1 Bill USN-1 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

Well if I remember my boat mechanic days(Mercruiser, OMC)...they were the GM 4 cyl with the rochester 2 barrel on them. Same basic thing as the inline 6 cyl.

Which means a manifold to TB adapter would be pretty easy.
The distr options should be the same as the 6 only less lobes.
If you have any distr with a magnetic pick up like an HEI, then you can make the GM system work.

Take a look at the FAQ at the top. look thru each link there and also look at the other 4 cyl threads.

Then if your not sure...ask away.

Bottom line is the TBI would be fairly simple on the 151 with the right parts.
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  #3  
Old 02-02-2006, 06:01 PM
Aphelion79 Aphelion79 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

I've found out that a few Chevy S10s run the Iron Duke 151 with fuel injection! I may be on to something...

Mind you this is completely overwhelming for me... I understand completely how a lawn-mower engine works... and thus my stock 151... lol... add in the electronics.. and I'm like "***" lol

This would be one hellova learning experience for me and I would LOVE to tackle this... but I really have no idea where in the heck to start!

I just may be able to get an intake manifold from an S10 or at least the TBI body and wires/fab up a plate like I saw you did in the FAQ. It basically acts like a carburator, the TBI does right? I'm like really excited browsing through this stuff...

I'm going to do some research on the chevy s10 some more and take a look through that... however, I am confused about the ignition... why couldn't I just use my stock distributor? Does the TBI upgrade computerize my ignition too? etc etc.
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Old 02-05-2006, 01:41 AM
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Bill USN-1 Bill USN-1 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

Transplanting the entire factory system is always the best way to go!!
Let us know what you decide.
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May be the answer to all your fuel injection needs!


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  #5  
Old 02-06-2006, 07:17 AM
Aphelion79 Aphelion79 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

Yeah I'm gonna call up the parts store today and get a part number for the Intake Manifold gaskets, if they're the same thing, guess what that means!

Also, I could just take the whole freaking ignition setup and everything else too! lol I somehow feel like I'm cheating, compared to what you guys are doing lol
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  #6  
Old 02-06-2006, 07:29 AM
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

What ever get the job done the quickest and cheapest!!!

I can't see the systems being in high demand at the JY!!
You might even find an old beater with a blown motor so you can transplant everything!!!


Just watch for the newer systems that control the trannys and stuff. The electrical gets a lot more involved!!!

The older systems are pretty basic with gas and spark!!!
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Click a link below that meets your needs! Either DIY or let me help.

COMMITED TO HELPING PEOPLE "PROPERLY" INSTALL EFI
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May be the answer to all your fuel injection needs!


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  #7  
Old 02-09-2006, 08:37 AM
Aphelion79 Aphelion79 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

I think you're the only one helping me with this, lol... anyway... got a new post on Jeep Forum with those numbers... they dont seem to do anything on google lol... then again I have no idea what I'm looking for anyway...

The mechanical part of setting everything up is gonna be so simple I could do it blindfolded... its just this electrical/computer part that is gonna leave me clueless !!

Sorry if I ask a lot of questions about that, it is so intimidating! I could like wrap my house up in the wires I pulled from that harness, lol
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  #8  
Old 02-10-2006, 08:25 PM
Cartman Cartman is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

just goto the junkyard and get a complete engine harness and TBI unit from an S10..they are everywhere and I bet they are cheap..
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  #9  
Old 02-11-2006, 12:05 AM
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Bill USN-1 Bill USN-1 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

He pulled his system from a 1989(!) Oldsmobile Cutlass Ciera.
Heep build

The throttle body is the same style used on the Carls "Rock Scout"

The ECM is a 1227748 which used card edge connectors vice the standard pin and socket connectors. It is also listed as an early P4 PCM-power train control module(engine/tranny) vice the ECM- engine control module that we use.

The chip is still removeable on this one which is good, so you can tweak the chip!
Attached Images
File Type: jpg 89 Ciera TBI.jpg (57.7 KB, 15 views)
File Type: jpg ECM.jpg (37.6 KB, 14 views)
File Type: jpg TB.jpg (59.9 KB, 16 views)
__________________
Bill USN-1


Click a link below that meets your needs! Either DIY or let me help.

COMMITED TO HELPING PEOPLE "PROPERLY" INSTALL EFI
Learn to do it right.


May be the answer to all your fuel injection needs!


WANTED-Holley Distributor
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  #10  
Old 03-20-2006, 07:03 PM
Aphelion79 Aphelion79 is offline
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Default Re: Pontiac Iron Duke 151cid 2.5L 4-Cyl Fuel Injection?

Hey all again...
I've got everything hooked up... everything is seeming to get power... except I've got no spark. I looked around and realized, what in the world is powering my ignition coil? Nothing, oh great! LOL OOPS... so my question to you all is, what can I wire that baby into?

Check diagram:
http://myweb.unomaha.edu/~mjwhitney/...ingdiagram.pdf

---

Starting at top left:
HOT IN START OR RUN
ECM I
10A... I have this wired into my OLD ignition switch positive wire... that USED to go to the old ignition coil... on a 10A fuse...

A bit lower, just next to the FUEL INJECTOR
HOT IN START
CRANK
20A... I have this wired onto the little post on my starter solenoid... on a 20A fuse...

Back to the top, two more lines over:
HOT AT ALL TIMES
ECM B
10A... I have this wired into my Alternator Post... on a 10A fuse...

---
So,
What can I use for my ignition coil power? Perhaps use the old ignition coil positive wire to trigger a relay... which, when the ignition turns on, gives current to the ECM I, and also the PINK wire (far right hand side on the "IGNITION COIL"?


Reposting here Bill... just to annoy you... er, lol J/K
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2 barrel , adapter , alternator , binderplanet , body , build , carb , coil , distributor , ecm , electrical , engine , faq , ignition , number , part , parts , power , scout , start , tbi , throttle , top , tranny , wiring

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