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Post  getback on Wed May 20, 2020 9:43 am

I am looking for the needle for the above //// or replacement that will fit ?
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Post  Mike1484 on Wed May 20, 2020 10:10 am

Could you post a picture of the engine ? There are a lot of .049 McCoys but I never seen a .5 . I might have a needle for you .

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Post  getback on Wed May 20, 2020 12:07 pm

Sorry i ws tring to get them to download from mt camera ? here is fr my phone >
McCoy .5 parts  Img_2121
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McCoy .5 parts  Img_2122 McCoy .5 parts  Img_2123
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Post  Mike1484 on Thu May 21, 2020 2:28 pm

I have to check my McCoy stuff . Might have some thing that will work . I have the Diesels but no glows but most of those early glows and diesels used similar needles . Got to go check some old parts . Maybe a Wen Mac needle ass. would work .

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Post  getback on Fri May 22, 2020 8:54 am

Thanks for taking the time to look . Eric Very Happy Engine has Great compression and would love to run it .
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Post  Mike1484 on Fri May 22, 2020 9:16 am

Found some needle valves . Tried them in one of my McCoy diesels . They all seem to have the same thread size but the tips of the needles very a bit in shape and size .I think a Wen Mac , Atwood , or Holland Hornet needle might work for you . You might consider pressing out the whole assembly and replace it with one from a donner Wen Mac . One thing I remember about these early .049's is they leak air around the needles and need the fuel tubing seal or one of those little black needle seals that Cox engines use . I will try to measure the thread size for you . You might be able to make a needle from a small screw .

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Post  Mike1484 on Fri May 22, 2020 10:51 am

Ok Just checked some needles and this is what I found out . The best that I can tell my McCoy diesels use a 1-72 N.F. tread as does the Pipe bomb engine with the White tank ,the Wen Macs , the Atwoods and Wasps and possibly the Testor engines . The tips are tapered but blunt on the end on the McCoy , the rest have a cone shaped tip . I could not tell you what the tapper is on the needles but I think that they would all work to some degree ,they are all very close in design . Hope this helps you in your quest to run your McCoy Let me know if you can't find a substitute needle .

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Post  Mark Boesen on Fri May 22, 2020 11:59 am

those will work, does the glowhead work or are you gonna tap it for a short glowplug?
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Post  getback on Fri May 22, 2020 1:20 pm

NO Mark it don't , just tried it lol! And its tight as the devil too . OK Mike i have Atwoods and that's not going to work Had some Testers but i think i got rid of all them ,, Wen Mac maybe i will have to do some digging into my onehellofamess This Site Rocks! Thanks again that is pretty much what i needed to know is a interchange possible , and a press is not out of the question , i got a wild hair there .
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Post  getback on Fri May 22, 2020 2:00 pm

WOW i had one in my display case Wen Mac roto spring long brass (only One ) now for the glow plug ? Laughing
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Post  Mike1484 on Sat May 23, 2020 9:04 am

I think the 5 had the insert type of plug that may be hard to find. Good luck on that one .

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Post  roddie on Sun May 24, 2020 10:24 am

Mike1484 wrote:I think the 5 had the insert type of plug that may be hard to find. Good luck on that one .

                       Mike1484

I was searching the web for Testors info. just this morning.. and saw these images. I'd never seen these types of glo-plugs before.

The #1 looks like a "short" and there is an eBay auction in PA (see link)

McCoy .5 parts  Testor13

https://www.ebay.com/i/202989195614?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=202989195614&targetid=884131267673&device=c&mktype=pla&googleloc=9002197&poi=&campaignid=9248481087&mkgroupid=99428154928&rlsatarget=pla-884131267673&abcId=1141156&merchantid=115282818&gclid=CjwKCAjwtqj2BRBYEiwAqfzur_0BOi4O1JtBriHVo-j24amVf885aWiXiA2hHf1Bc3c9Knj00nABaBoCQuAQAvD_BwE

Here is a photo of a #3 "long" type..

McCoy .5 parts  Testor15
McCoy .5 parts  Testor16


https://www.ebay.com/itm/Testors-No-3-Golden-Glow-Plug-049-McCoy-AUD-10-00-USD-6-50-Very-Hard-to-find/333527432599


Last edited by roddie on Sun May 24, 2020 10:31 am; edited 1 time in total (Reason for editing : added info and 2nd auction)
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Post  Oldenginerod on Sun May 24, 2020 5:15 pm

Hey, the one time that something interesting and affordable comes up locally, and I don't have any use for them Mad
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Post  Mark Boesen on Sun May 24, 2020 11:22 pm

McCoy .5 parts  01111
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Post  Mark Boesen on Sun May 24, 2020 11:24 pm

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McCoy .5 parts  Unknow10
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Post  Mark Boesen on Sun May 24, 2020 11:29 pm

lol, i just woke up and realized or think that glowhead is actually an Atwood 'Shriek' head, that somebody attached...if that's the case (or head) you might be able to use an early Wen-Mac head and a short glowplug???
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Post  getback on Mon May 25, 2020 7:10 am

Wow Thanks Mark , The Wen Mac i took the needle from has a insert that may work , i haven't had time to take the head off yet maybe today . I see Meco has the Shriek heads in stock 9.99 if things don't work out . Of coarse it would bee the next of never getting one LOL
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