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 Metering block cleaning 
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Joined: Sat Aug 13, 2016 6:49 am
Posts: 4
I had bought a set of nasty mechanical six pack carbs. As I clean everything up the center block has something different going on in the inner main wells. Can I pull these without doing any damage or should I just leave it alone and clean them up the best I can. I had also considered just putting an after market block in it but it seems to have some extra kill bleeds in the angle passages.

Thanks


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Mon Jun 12, 2017 2:38 pm
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Joined: Sun Jun 23, 2013 1:41 pm
Posts: 375
Location: Phila. Penn.
H'm. It looks like the plug you've removed is for the idle well. Be interesting to see what's in the main well.
If there's was a ton of white or brown crud and there is a tube inside, I'd want to be sure it was clean.
Do you have an ultrasonic cleaner?

Post of the carb numbers and some more pictures. Maybe someone will know more about the carbs or the blocks.


Fri Jun 16, 2017 5:26 pm
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Joined: Wed Jan 29, 2014 12:00 am
Posts: 64
I highly recommend you do not remove the plugs from the main well. I was in the same situation a month ago, with an 850 holley. It was extremely dirty, so I decided to drill out the main plugs in order to properly clean it. It turns out those plugs, are no longer available from holley, blp, walker, Daytona parts and the list goes on. They are not the brass cups, commonly found. The ones I removed are made from a ferrous material and are a solid plug. I will try to post pics later today. I believe my only option is to make my own with some lead shot.


Sat Jun 17, 2017 9:49 am
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Joined: Mon May 06, 2013 9:32 pm
Posts: 100
You might check if ACE Carburetors still has them. I used to get them from Ace. You do have to have an account to buy from them. Ask for Saundra.


Sat Jun 17, 2017 10:15 am
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Joined: Fri Feb 08, 2013 5:50 pm
Posts: 2357
Alkyvette wrote:
I highly recommend you do not remove the plugs from the main well. I was in the same situation a month ago, with an 850 holley. It was extremely dirty, so I decided to drill out the main plugs in order to properly clean it. It turns out those plugs, are no longer available from holley, blp, walker, Daytona parts and the list goes on. They are not the brass cups, commonly found. The ones I removed are made from a ferrous material and are a solid plug. I will try to post pics later today. I believe my only option is to make my own with some lead shot.


Wouldn't the brass plugs fit? What was the OD?


Sat Jun 17, 2017 1:59 pm
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Joined: Sat Aug 13, 2016 6:49 am
Posts: 4
Ok, I decided to leave them alone. I boiled it in some heavy duty degreaser and it looks pretty good now. Guess I'll give it a shot. Thanks for the input guys.


Sat Jun 17, 2017 4:09 pm
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Joined: Fri Feb 08, 2013 2:37 pm
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Those plugs that are down in the block just above the angle channel intersection are .191"~.192" OD. This makes it a trick to make them because regular 3/16" brass rod is only .1875". You can make them in a lathe (or hand drill motor of you have mad skillz) by drilling a 1/8" hole about 3/16" deep in the rod before parting off about 1/4", then tap or squeeze a 5/32" ball or the tapered tip of a punch in the hole to expand the OD a bit.


Wed Jun 21, 2017 2:36 am
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Joined: Wed Jan 29, 2014 12:00 am
Posts: 64
Just an update... I found a company in California called BPT Performance Carburetors (530)347-0632 that sells these steel main well plugs. Their prices on other carb parts seem very reasonable. Gonna give them a shot.


Sun Jun 25, 2017 8:42 am
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Joined: Mon May 15, 2017 4:04 pm
Posts: 80
^^^^^^ Mike is a good guy to deal with. He has hooked me up in a pinch a few times and he ships fast.


Sun Jun 25, 2017 2:18 pm
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