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Author Topic: carb  (Read 3719 times)

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Offline shredeagle

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carb
« on: May 30, 2013, 11:52:22 AM »
are there any carb upgrades for my 81 2.5 gm? thanks.....

Offline BenM

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Re: carb
« Reply #1 on: May 31, 2013, 10:13:45 AM »
The progressive Rochester carb on those is pretty good. You could pull a TBI setup from a Pontiac, it should go together easily. The hardest part would be finding a vehicle speed sensor.
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1987 AMC Eagle Sedan -- 1976 Pacer Coupe -- 1968 Pontiac Tempest Custom S -- 1940 Mercury (& a 2002 Jetta Turbodiesel, 5 spd., the Wife's Daily Driver)

Offline carnuck

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Re: carb
« Reply #2 on: June 02, 2013, 04:49:27 PM »
What's the pulse output for the GM one? Jeep used TBI on the '86-'89 XJs and MJs with 2.5L AMC
AMC/Jeep gauges are for amusement only. Any correlation between them and reality is purely coincidental!

Offline Monkeyjoe

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Re: carb
« Reply #3 on: December 26, 2013, 04:21:42 PM »
I see this thread hasn't had any action in a while but I have the same questions.

I did a few performance upgrades to my 2.5 Iron Duke when I rebuilt it, larger bore, Zero Decked the block, milled the head for higher compression and mild cam to name a few.  Now I need external upgrades, Carburation and exhaust.  It has the 2bbl, carb, cant remember the make.  Are there any tricks for the original carb or is there another that will bolt on?  I am pretty good with fabrication and could build an adapter plate between the manifold and carb for another 2bbl.

I did see the post about TBI, Not sure how to set up a speed sensor either,
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline captspillane

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Re: carb
« Reply #4 on: December 26, 2013, 07:15:10 PM »
Vehicle speed sensor is easy. Basically transfer case hole gets filled by an adaptor with 7/8 inch threads, the speed sensor threads on, and then a CJ or FSJ speedometer goes from there to the stock speedo. It should cost about $60 total.
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline Monkeyjoe

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Re: carb
« Reply #5 on: December 27, 2013, 08:50:12 AM »
Wow, that sounds easy.  So what is the sensor reading?  Is it a spline or gear teeth in the transfer case?
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline Monkeyjoe

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  • If you want to look common, buy a Ferrari
Re: carb
« Reply #6 on: December 27, 2013, 10:21:53 AM »
what all would I have to scavenge off the donor car.  And what car?  Pontiac Fiero?
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline captspillane

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Re: carb
« Reply #7 on: December 27, 2013, 10:47:42 AM »
This is the exact same unit just marked up crazy high. It is included with a Howell TBI kit. I'd take the parts from a 1988 era GM car to match the TBI systems I'm using for the Eagles. Going to the Binder Planet forum and looking at their TBI page will give you much more information on what years are what.

http://www.ebay.com/itm/Painless-Wiring-60115-Chevy-Performance-Speed-Sensors-7-8-18-Thread-TBI-TPI-/141058713033?pt=Race_Car_Parts&hash=item20d7c125c9&vxp=mtr



This can be found for much, much, much cheaper but I posted the link so you can see what I'm talking about. For more information on speedometer solutions go to my project thread here (specifically a post from October 2012):

http://forums.amceaglesden.com/index.php?topic=36839.30
« Last Edit: December 27, 2013, 10:56:31 AM by captspillane »
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline captspillane

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Re: carb
« Reply #8 on: December 27, 2013, 10:50:12 AM »
Here's a quote from the October 2012 post on my project thread:

I have been looking for a speedometer solution for the two Eagles I'm currently working on. The first one is a TBI setup with a VSS that has 7/8" input and 7/8" output. The second is an MPI setup with a VSS that has 7/8" input and 5/8" output. For both of them I am using a transfer case speedometer gear and housing from a 1992 Jeep Cherokee. That housing is pictured in this first picture. It goes right into a stock Eagle transfer case or any of the "New Process" Jeep transfer cases.



For the TBI Eagle the speedometer cable is easy. I put the 92 XJ speedometer gear and housing into the Eagle transfer case which ends in 7/8x18 male ends, then put the 7/8 female to 7/8 male VSS on it, then purchase a common 7/8 female to 5/8 female speedometer cable to go up to the Eagle speedometer, which has 5/8x18 male threads on the back. A speedometer from a J10 or a CJ7 will work, so I ended up bying a CJ7 speedometer cable for about $20 from Rockauto.

On my Eagle I also added a 40" lower cable from a 1987 Monto Carlo which has 7/8" male threads on one end and 7/8" female threads on the other. That cable goes from the transfer case up to the inside of the vehicle so that the VSS will be better protected from the weather. My VSS is under the driver seat.
« Last Edit: December 27, 2013, 10:53:57 AM by captspillane »
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline Monkeyjoe

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Re: carb
« Reply #9 on: December 27, 2013, 12:08:52 PM »
OK, That is awesome.  I had no idea. 

Thank you for that, I will do that when I get home.

The TBI?  Are there any modifications to the manifold or is there an adaptor to make the TBI fit.
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline captspillane

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Re: carb
« Reply #10 on: December 27, 2013, 12:45:41 PM »
I should mention that the VSS on the TBI is kinda optional. It has a purpose and is important, but I still drove around without it for several months before getting around to installing it. The TBI is smart enough to keep the mixture close to right even when it doesn't know your speed.

I'm making my own TBI adaptor for the 6 cylinders and another for my Mercruiser Iron Dukes. I'll offer them for sale afterwards. For the Mercruiser motors I'm using the Holley non-crossflow intake manifold original to a 1977 Chevy Monza. I can look into making that one work with the AMC Rochester carb too but I personally hate the crossflow head and won't be using any. It makes the engine very difficult to work on when everything is stuffed in one corner.

Honestly if you gave me even less than the cost of a Howell kit ($1200) I'd drop everything and mail you a ready to go Iron Duke kit this month. Its pretty easy and I have everything sitting there I just took off for this purpose. You'll save alot of money if you wait or do it yourself, however. The hardware itself would probably only be about $600 worth. The rest pays Howell to heat and roof their building. My building needs heat too. I just know better than to expect to make a living selling parts to AMC cheapskates haha.
Currently Inspected and Insured as of Jan 2013:
-1985 Eagle Station Wagon 258 T5 Stickshift
-1980 Eagle Station Wagon 258 Auto Fuel-injected with GM TBI

Minor Repairs Underway:
-1982 Eagle SX4 258 T5
-1981 Kammback 2.5L Iron Duke T5

Restoration Efforts Near Completion:
-1982 SX4- 401 NV3550
-1983 SX4- 4.5 MPI NSG370 (6 Speed)

Restoration Efforts Underway:
-1985 SW- 4.0 MPI AX15
-1982 SX4- 4.0 AW4
-1981 SX4- SD33T NV4500 (Turbodiesel 5 speed)

Future Rescue Efforts- '85 Maroon SW, '87 Limited SW, '84 Limited SW, '87 4 door Sedan, '81 2 door Sedan, '88 White SW, '77 4 door Hornet, '74 2 door Hornet, '79 Spirit AMX, '81 Kammback.

RIP- Red '81 SX4, '84 4dr Sedan, '84 SW, '81 SW, '80 Spirit, '83 SW, '83 4dr Sedan

Offline IowaEagle

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Re: carb
« Reply #11 on: December 27, 2013, 01:02:12 PM »
Yeah we are cheap. 
Click for Toledo, IA Forecast" border="0" height="100" width="150   


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Offline Monkeyjoe

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Re: carb
« Reply #12 on: December 28, 2013, 12:22:59 AM »
I would say "resourceful" ;D
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline IowaEagle

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Re: carb
« Reply #13 on: December 28, 2013, 12:26:23 AM »
In the Army we used to call it "Field Expediency".  Steal  from the Air Force as they had better stuff.
Click for Toledo, IA Forecast" border="0" height="100" width="150   


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II

Offline Monkeyjoe

  • What greater man is than one who gives his life for his friends
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  • Thumbs Up 18
  • If you want to look common, buy a Ferrari
Re: carb
« Reply #14 on: December 28, 2013, 12:34:04 AM »
Funny, we still do that.  >:D

When I was in the Marines, they said Marines never steal.  We acquire.
 
I JUST TELL MY WIFE "SOME PEOPLE COLLECT STAMPS"
1982 AMC Eagle SX4, (Little Beast)
1983 AMC Eagle Wagon, (Gold Digger)
1992 Dodge, Cummins, 1 Ton Duelly (Big Red)
1967 International Scout 800 (Scooter)
1988 Chevy k1500
1960 Ford F100
1927 Model T, Hotrod(Daddys Girl)
1961 Willys FC150 (Scat)
1978 Honda CB750
1971 Honda CB350

Offline IowaEagle

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Re: carb
« Reply #15 on: December 28, 2013, 12:41:44 AM »
Yes, acquire is a better term to use.  They had so much better cold weather stuff than we had.  I could not figure that out since they mostly were inside of warm places with real heaters, walls, bunks, etc.  Do you know what Quonset huts were insulated with?  Nothing.  And, our diesel oil stoves, one at each end of the hut only warmed within one foot of the stove.  Oh well, it made men of us. 
Click for Toledo, IA Forecast" border="0" height="100" width="150   


Not a Jeep.  Not a Car.  Its an AMC Eagle!

1982 Eagle SX/4 Sport;
1980 Concord DL;
1970 Ambassador 2 Dr HT, SST
2002 Hyundai Santa Fe;
2008 Jeep Patriot Sport - Freedom Drive II