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by HalfaDave Wed Apr 17, 2024 7:28 pm
Cox Engine of The Month
nelson plug
Page 1 of 1
nelson plug
I have been experimenting with a galbreath head and nelson plug. I am having trouble with it. The engine runs like its rich, 4 stroking. If I lean it out any it shuts off. The head is sealing good on the shim. Could the HD plug be too cold? The engine runs great with a stock glow head.
chevyiron420- Gold Member
- Posts : 251
Join date : 2015-01-28
Age : 66
Location : Barney Georgia
Re: nelson plug
20% nitro and one gasket.
chevyiron420- Gold Member
- Posts : 251
Join date : 2015-01-28
Age : 66
Location : Barney Georgia
Re: nelson plug
Sounds like a too cold plug and/or too low compression ratio for the fuel used.
I haven't used the Galbreth head enough myself, but there are other Nelson plugs to try with too. Merlin makes a few for instance, including a Glow Bee style.
I haven't used the Galbreth head enough myself, but there are other Nelson plugs to try with too. Merlin makes a few for instance, including a Glow Bee style.
Surfer_kris- Diamond Member
- Posts : 1900
Join date : 2010-11-20
Location : Sweden
Re: nelson plug
With that combo I've always had to run 3,4,5 gaskets on 25%, the Mouse I sent to Kim had 5.
crankbndr- Top Poster
- Posts : 3063
Join date : 2011-12-10
Location : Homestead FL
Re: nelson plug
I'd add 2-3 gaskets, 3-4 total and see what happens? With the present set up can you needle it? Usually when its over compressed it's almost impossible to needle and that sounds like whats happening.
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