McCoy 29 sport glow head wanted

crankbndr Thu May 30, 2013 7:47 pm

I lost the glow plug for Mitches engine and I don't know enough about them to find a replacement.
The only thing I can find is they were called a Hot Point glo head. I had some old plugs but none fit.
Can someone point me in the right direction? I need a plug for this engine. Thanks.

McCoy 29 sport glow head wanted Img_1819

McCoy 29 sport glow head wanted Img_1819

Mark Boesen Thu May 30, 2013 10:16 pm

i'm sorry i don't understand, are you saying the diameter of the threads are larger? It should be the same threads as any plug?

fredvon4 Fri May 31, 2013 5:27 am

Any of the current typical long glow plugs like OS#8, McCoy 59, ecetera will work

Prices range from $2.99 up to over $27.99 per plug

I recommend local search before mail order...or try to hit the free shipping for fathers day from Tower Hobbies

crankbndr Fri May 31, 2013 6:14 am

Thanks for the info, I had some old plugs that looked like the right diameter and would start to turn into the head then stop about 1/2 turn in.
I did not want to force it in the aluminum,so I thought maybe the threads had a different pitch. The same plug would turn right into my Cameron engines.

fredvon4 Fri May 31, 2013 6:41 am

I have a 1950s McCoy 29 in front of me and it tightly accepts the three spare plugs I have screwed into the four way wrench plug holders..

You may have a big mismatch...before trying to force it in I would look at the cylinder head threads and the plug threads with a magnifier to see if there is a burr or previous cross thread or some problem

Some plugs have cut threads and others are rolled and often the pitch between the threads is slightly different... I have some that can turn into my engines by finger and others in the same head feel super tight giving me pause

mitchg95 Sat Jun 01, 2013 10:58 pm

any luck finding a plug?

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McCoy 29 sport glow head wanted

McCoy 29 sport glow head wanted

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Re: McCoy 29 sport glow head wanted

Re: McCoy 29 sport glow head wanted

Re: McCoy 29 sport glow head wanted

Re: McCoy 29 sport glow head wanted

Re: McCoy 29 sport glow head wanted