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#820484 - Sat Jan 28 2012 10:10 AM Re: TBI on a 1959 235 [Re: Roy Rodgers]
Whitedog Offline
Shop Shark
Registered: Mon Mar 03 2008 03:35 PM
Posts: 1493
Loc: IL
Roy, that may be true on the early Ford OBD1 systems. It's been a long time since I wrenched on any. The good thing about them is that they were relatively simple. You didn't even need a scan tool, you could actually hook up an analog multimeter to the OBD port to get all the codes. You could also check the resistance across the sensors to see if they were functioning properly.
_________________________
1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket
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#820630 - Sat Jan 28 2012 07:06 PM Re: TBI on a 1959 235 [Re: Whitedog]
Bill_USN_1 Offline
New Guy
Registered: Fri Jan 20 2012 01:51 PM
Posts: 43
Loc: Wa
This is going off topic for this thread but you would need to spend some time studying the system to know why.

I am a blue oval guy and I have been playing with converting carbs to EFI for over 10yrs. If the ford was easier or better then I would have used it.
Yes the throttle body bolts on easier but that's where it ends.
The GM computers are hacked by the aftermarket/auto nerds so everything is avail for free to tune them yourself.

I am not a big fan of aftermarket computers like fast or megasquirt due to availability.
If you break down who can fix it and where/when do you get parts.

The GM TBI was used on about 4 million vehicles and is everywhere including the parts stores and junkyards. So "if" I ever break down I can get the parts I need right then.

i do use a couple ford parts. I convert my old distributors to electronic using the ford duraspark pick up and reluctor. Same as the MSD probillet distr.
I also use the 4.9/5.4 yellow injectors for my MPFI conversion. They are everywhere and cheap.

And yes with a little knowledge you can read each sensor with a meter. But you can also pull into the local autozone and have them plug the scanner in and just tell you what is wrong. Or just jumper 2 pins on the aldl connector and count the flashing on the SES light. Just keep a little cheat sheet in the glove box.

HTH
Bill USN-1
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#821191 - Mon Jan 30 2012 11:32 AM Re: TBI on a 1959 235 [Re: Bill_USN_1]
kjhibbs Offline
Wrench Fetcher
Registered: Fri Jul 15 2011 09:19 AM
Posts: 114
Loc: KS
Sorry for the glare, but pretty much finished up the engine:

http://i1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/803817dd.jpg

I am just waiting on the TBI adaptor...
_________________________
1959 Chevy Apache 3600

My rebuild album, including my reference shots:

http://s1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/
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#821290 - Mon Jan 30 2012 06:10 PM Re: TBI on a 1959 235 [Re: kjhibbs]
kjhibbs Offline
Wrench Fetcher
Registered: Fri Jul 15 2011 09:19 AM
Posts: 114
Loc: KS
_________________________
1959 Chevy Apache 3600

My rebuild album, including my reference shots:

http://s1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/
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#822540 - Fri Feb 03 2012 10:02 AM Re: TBI on a 1959 235 [Re: kjhibbs]
complexvariable Offline
Wrench Fetcher
Registered: Sun Mar 20 2005 12:00 PM
Posts: 103
Loc: st malo, manitoba, canada
I hope you don't intend to use the generator with the tbi system
_________________________
52 chevy 3600
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#822600 - Fri Feb 03 2012 02:26 PM Re: TBI on a 1959 235 [Re: complexvariable]
kjhibbs Offline
Wrench Fetcher
Registered: Fri Jul 15 2011 09:19 AM
Posts: 114
Loc: KS
Was planning on it, any info as to why that's a bad idea would be appreciated.

Said and done I want the system to look moderately stock, so I pulled an air cleaner from the donor vehicle and chopped out the mounting base and did the same on the base of my 235 air cleaner. I welded the two together, sealed the inside gaps with Copper RTV, and now will be looking for an air cleaner element that fits inside. Here are a few pics of the process:

The air cleaners side by side:
http://i1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/d091f763.jpg

Donor mounting base next to the 235 air cleaner:
http://i1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/1290fa22.jpg

The two welded together:
http://i1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/5596d1cc.jpg

Painted up and sitting on the TBI unit:
http://i1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/86d771a7.jpg
_________________________
1959 Chevy Apache 3600

My rebuild album, including my reference shots:

http://s1130.photobucket.com/albums/m537/kjhibbs99/Apache%20Rebuild/
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#822667 - Fri Feb 03 2012 06:04 PM Re: TBI on a 1959 235 [Re: kjhibbs]
Bill_USN_1 Offline
New Guy
Registered: Fri Jan 20 2012 01:51 PM
Posts: 43
Loc: Wa
Originally Posted By kjhibbs
Was planning on it, any info as to why that's a bad idea would be appreciated.


The generator is not know for a very stable voltage output.
If you can tweak the regulator to maintain a constant 13.8-14.2 volts at the battery then you should be fine. O zero out the voltage compensation table in the ECM's program so it won't compensate when the voltage drifts.

The 10 and 12SI is better if set up properly. Use the info at www.madelectrical.com for those. Read about the proper setup of the sense wire.
The newer CS series of GM alternator was designed for the newer EFI systems with a much cleaner voltage out. They can be a direct swap for the SI series.
So the CS is the preferred. The standard is a CS130 so there is plenty of amps there to play most any accy.
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#822787 - Sat Feb 04 2012 12:38 AM Re: TBI on a 1959 235 [Re: Bill_USN_1]
rc356s Offline
Wrench Fetcher
Registered: Wed Nov 05 2008 01:24 PM
Posts: 150
Loc: California
Looks great, are you using a stock 1 bbl manifold or a four bbl manifold like the ones from clifford?
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#822993 - Sat Feb 04 2012 06:08 PM Re: TBI on a 1959 235 [Re: rc356s]
complexvariable Offline
Wrench Fetcher
Registered: Sun Mar 20 2005 12:00 PM
Posts: 103
Loc: st malo, manitoba, canada
i doubt a generator can keep up with the current requirements of the fuel injection system and anything else on the truck
_________________________
52 chevy 3600
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#823022 - Sat Feb 04 2012 07:32 PM Re: TBI on a 1959 235 [Re: complexvariable]
Bill_USN_1 Offline
New Guy
Registered: Fri Jan 20 2012 01:51 PM
Posts: 43
Loc: Wa
Keep in mind that an EFI system does not use much current.
That's really not the issue. A clean constant voltage is a concern.
The injectors out put can vary with a change in voltage along with the fuel pump output. So at low voltage you get less fuel. This can play havoc with trying to tune the EFI. But, the GM system is capable of learning and will adjust and compensate for some of the variables.

The biggest draw is the electric pump and the ignition. So if anyone with a carb has installed an electric fuel pump then it's really not much different.
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