Holley NH rebuild

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Model T Ford Forum: Forum 2014: Holley NH rebuild
Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Tuesday, July 08, 2014 - 07:43 pm:

I am in the process of rebuilding a Holley NH. It's almost completely disassembled except for the main jet, which has a screwdriver slot in it and I'm sure it's removable.

1. It's being very stubborn. What's the best way to remove it without messing it up?

2. The jet appears to be in good shape - is there any real need to remove it, or just clean and leave in place?

Thanks


Top of pagePrevious messageNext messageBottom of page Link to this message  By Seth from NC on Tuesday, July 08, 2014 - 07:57 pm:

Hit it with some 50/50 acetone/ATF and let it set a bit. Then I'd make sure you have the biggest possible screwdriver that fits down in there.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Frank van Ekeren (Australia) on Tuesday, July 08, 2014 - 08:26 pm:

Warm the cast iron up around the jet with a plow torch, let it cool and the brass jet should screw right out!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Norman T. Kling on Tuesday, July 08, 2014 - 08:45 pm:

unless you plan to replace it or replace the gasket, leave it alone. Just soak in carb cleaner and blow it out with compressed air. You run the risk of damaging the jet or the seat in the casting. I've seen cracked threads which ruin the carburetor.
Norm


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bud Holzschuh - Panama City, FL on Tuesday, July 08, 2014 - 10:13 pm:

Frank

What's a plow torch ?


Top of pagePrevious messageNext messageBottom of page Link to this message  By Frank van Ekeren (Australia) on Tuesday, July 08, 2014 - 10:42 pm:

Sorry Bud should have been blow torch, that's just an easy name we use for a oxy-acetylene set, even if you had a propane torch for heating a soldering iron would do the trick, doesn't take a lot of heat, not red hot as the brass could start to melt at that temp.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Dan Treace, North FL on Tuesday, July 08, 2014 - 10:47 pm:

OK Frank

Thanks for the info.

Just thought this is a plow torch.


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