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Old 07-30-2009, 05:29 PM   #1
MikeInMobile,AL
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Default Holley 2210 rebuild disassembly (lots of pics)

Lots of great IH carb info here Mike.

I recently picked up a 78 4x4, 304, 727 sii that had been sitting for a few years due to fuel delivery problems. The original owner passed away a few years ago, and his son in law inherited the Scout.



As he told me himself, he drove it for a while, but he didnt have a clue how to keep it maintained and in good running condition, so when it started having carb/fuel related problems and transmission problems, he paid someone to "go through" the gas tank, put on a new fuel pump, and put on a parts store rebuilt 2210c. He then had the 727 "looked at" by someone and was told it was fine.

He never could get it to run right or shift right after that, so it got parked, with intentions of repairing it sometime in the future. That repair time never came, and eventually it was listed on the local craigslist. Thats where I came in.

The 2210c on the engine was the parts store rebuild. It also came with a well used Holley factory reman 2210c laying in the back of the Scout.

I took both carbs and broke them down to prepare for a rebuild. I got a couple of surprises along the way.

Carb on the left (silver) is an r7940, 483449c91, 0534 (quality reman sticker #20-19, 0-23-01-05)
carb on the right (gold) is an r7309a, 465663c91, 0416 (Holley reman sticker #225462, 0582, 64-3143)






The r7309a had the hot idle compensator valve port drilled, but blocked off.


The r7940 was never drilled.


Otherwise the carbs are pretty much identical.










More later.

Mike

(search keywords, 2210c, 2210-c, Holley, carb, carburetor, rebuild, r7309a, r7940, 465663c91, 483449c91)

Last edited by MikeInMobile,AL; 08-02-2009 at 03:12 PM..
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Old 07-31-2009, 12:17 PM   #2
MikeInMobile,AL
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Default Re: Holley 2210 rebuild disassembly (lots of pics)

So, more, as promised.

I started tearing down the r7940 quality reman first, because the r7309a Holley reman looked like it May have sat outside in the weather at some point due to the rust issues, and it May be easier to clean the r7940.

I checked the choke pull offs on both units and they both held vacuum. The connector is bent on one of them, but it will still work.


I removed the choke pull off.




Removing the accel pump actuator and link connections.

Upper link connection.

Lower link connection.


Removed the choke shaft linkage.

Fast idle cam end.


Then I flipped it over and removed the 5 throttle body screws.


When I removed the throttle body I found that they used the right gasket.


I found this shot plug in the bottom of the throttle body.


Here is the other end of the passage that is plugged. Its plugged too. Shouldnt pose any problem at all.


Removed the idle adjustment screws.

They looked good, with no visible galling, though slightly blurry.




More later.
Mike

Last edited by MikeInMobile,AL; 08-02-2009 at 03:12 PM..
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Old 07-31-2009, 12:34 PM   #3
MikeInMobile,AL
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Default Re: Holley 2210 rebuild disassembly (lots of pics)

More again.

Back to the carb body and removed the fast idle cam.




Removed the 8 screws in the top of the carb and pulled it off.


No surprises here, just dried rusty dirty schmutz.


Gently removed the pump side and choke side main jets. If they are different numbers, Mark them so they can go back in the same places.


Removed the power valve assembly.

Yuck.

More yuck.


Removed the fuel bowl baffle.


Pulled out the float hinge pin.

And the float.


Pulled out the needle.

And removed the seat.



To be continued.
Mike

Last edited by MikeInMobile,AL; 08-02-2009 at 03:13 PM..
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Old 07-31-2009, 02:02 PM   #4
MikeInMobile,AL
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Default Re: Holley 2210 rebuild disassembly (lots of pics)

Removed the pump discharge needle. (yes the carb is suddenly cleaner. I forgot to get a pic of this step when I actually did it in the original teardown with the grungy carb.)




Removed the accelerator pump assembly.







Removed the power valve piston assembly (the Holley reman is shown) "when re-installing the power valve piston assembly, lightly stake casting around (retaining) washer" to hold the piston in. This piston assembly almost fell out with a light pull.




More to come.
Mike

Last edited by MikeInMobile,AL; 08-02-2009 at 04:41 PM..
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Old 08-01-2009, 09:17 AM   #5
Michael Mayben
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Default Re: Holley 2210C rebuild (lots of pics)

Nice stuff Mike! Great to see you contributing on ihon!

The carb with the nicer chromate finish has been converted "away" from a version that used the hicd circuit, thus the plugging which is non-oem. Typical reman conversion! That will have no impact at all on performance as long as the vacuum passages which are plugged are truly "plugged"! The hicd system is a totally passive emissions bandaid...but if the valve stuck "open" or the cork seal for the valve did not seal, then a drivability issue would be a concern.

And in this thread:

http://www.forums.IHPartsAmerica.com...ac-thread.html

You can see how to test the power valve actuator system using a mityvac.

Nice work on the cleanup!
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Old 08-02-2009, 12:36 PM   #6
MikeInMobile,AL
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Default Re: Holley 2210 rebuild disassembly (lots of pics)

Quote:
Originally Posted by michael mayben View Post
nice stuff Mike! Great to see you contributing on ihon!

The carb with the nicer chromate finish has been converted "away" from a version that used the hicd circuit, thus the plugging which is non-oem. Typical reman conversion! That will have no impact at all on performance as long as the vacuum passages which are plugged are truly "plugged"! The hicd system is a totally passive emissions bandaid...but if the valve stuck "open" or the cork seal for the valve did not seal, then a drivability issue would be a concern.

And in this thread:

http://www.forums.IHPartsAmerica.com...ac-thread.html

You can see how to test the power valve actuator system using a mityvac.

Nice work on the cleanup!
I thought the cleanup was a done deal, till I saw those dirty crevices that the camera flash revealed in the pump discharge needle pics. I got them cleaned up now though. :d

good idea on the mityvac use thread. With the tip adapter in the proper port, when I squeezed the handle on the mityvac, the power valve actuators in both carbs pulled most of the way down, then quickly popped right back up. Like you described in your mityvac thread, they dont hold vacuum, but they move down briefly then spring back up.

Mike

Last edited by MikeInMobile,AL; 08-02-2009 at 03:14 PM..
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