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PostPosted: Thu Dec 30, 2021 5:30 pm 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 7201
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Removed all three carbs and disassembled them. Cleaned everything manually and then dropped everything into the ultrasonic cooker from work. It does a really nice job of cleaning, especially all the internal passages and jets that need cleaned. I reassembled them with the new 40MM venturis and then went up one size on the main fuel jet as a starting point. Just waiting on some new mounting gaskets and then they can go back on the car and be tested. I feel like I have a lot better handle on how these carbs work now, since I did 3 of them. I probably better wait and see if it starts and runs before I say that !! :D :D

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
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PostPosted: Thu Dec 30, 2021 7:06 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6293
Location: So California
Car Model: 64 Plymouth Valiant
Would it be possible to put a petcock on the fuel line to the carbs?

I turn off the petcock and run it until it dies to avoid gumming up the carb.

I then added a fuel valve to my lawnmower to do the same thing.

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64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

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PostPosted: Fri Dec 31, 2021 8:28 am 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 7201
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Yes I could put on a shut off. But I generally run my car all winter long. Usually just in and out of the garage to work on something else. On the Webers you could actually remove the little top cover and unscrew one of the emulsion tubes (About 10 seconds total) and have access to the clear bottom of the float bowl. Then just suck out all the gas and the carbs would be dry.
At work I see a lot of times when people drain their carbs by running them till they stop, that there is still a small amount of fuel laying in the bottom of he bowl. So it is probably better to get it all out if you can. I honestly was not having any problems with my carbs. I was just updating the venturis and it made sense to clean them while they were apart.

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
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PostPosted: Sun Jan 09, 2022 6:42 pm 
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4 BBL ''Hyper-Pak''

Joined: Tue Sep 01, 2020 1:15 am
Posts: 34
Car Model: 68 Valiant
Rick Covalt wrote:
Removed all three carbs and disassembled them. Cleaned everything manually and then dropped everything into the ultrasonic cooker from work. It does a really nice job of cleaning, especially all the internal passages and jets that need cleaned. I reassembled them with the new 40MM venturis and then went up one size on the main fuel jet as a starting point. Just waiting on some new mounting gaskets and then they can go back on the car and be tested. I feel like I have a lot better handle on how these carbs work now, since I did 3 of them. I probably better wait and see if it starts and runs before I say that !! :D :D

IMG_4846.JPG

Great job cleaning those carbs!


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PostPosted: Wed Jan 12, 2022 1:47 pm 
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Board Sponsor & SL6 Racer

Joined: Wed Oct 23, 2002 7:57 pm
Posts: 7201
Location: Waynesboro, Pa.
Car Model: 65 Valiant 2Dr Post
Everything is back together and ready to go. I did fire it up just for a minute or two, so it does run! :D But it was mid 20's out, here last night and it was too cold to run it for long. Once we get a 40 -50 degree day I'll run it for a while longer and see how things look. RC

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!
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