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Atwood 049 Plug ?? Empty Atwood 049 Plug ??

Post  getback Thu Sep 25, 2014 8:41 pm

I 've got one of these that has taken me a month to get loosened up , Its not a wasp , but came with no plug and cant find a refrance , I am wanting to run it, the rubber for the head gasket is in fair shape but would like to replace it also ...... if anyone can help Thanks Eric Very Happy Well i was going to send a pic but i was reset ???? Huh... there Atwood 049 Plug ?? Atwood10 Atwood 049 Plug ?? Atwood11 Atwood 049 Plug ?? Atwood12 well taht was difft.


Last edited by getback on Thu Sep 25, 2014 8:45 pm; edited 1 time in total (Reason for editing : to applies pics.)
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Post  RknRusty Thu Sep 25, 2014 10:52 pm

Is the hole threaded? Try a standard plug. If it doesn't fit, get the thread count.
Or is is a clamp ring? Try a Merlin drop-in like Cox and Norvel use. Bernie has them.

I looked on the Mecoa site and saw this
Atwood 049 Plug ?? Atwood_zps0c53399d

Get more info and I have a friend here that will know how to either get the original plug or modify it to take a standard plug. An engine model number would be nice,
Rusty

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Atwood 049 Plug ?? Empty re: Atwood glow plug

Post  happydad Thu Sep 25, 2014 11:02 pm

I typically use a short plug, O.S. Max. #6 formerly A3. Long threaded plugs will not work with out several copper gaskets. I have used the A3, or #6 with one gasket.
 p.s. I haven't found a source for the glow head/cylinder head rubber gasket you were referring to except for used atwood engines.

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Post  getback Fri Sep 26, 2014 8:07 am

Thanks Rusty that one want work , it is a standard thread and will have to be short . The mod. is Atwood 049 NO TANK Very Happy  HappyDad  i dont think i have any #6 plugs unless there is one in one of these engines around here lol! i will look if not i will have to order some , Do you know if that o-ring was a flat style or just thin like metric ones are ?? Are the plugs marked and i cant see it or you just have to know by looking at it what kind it is ?? Huh...  Thanks Eric Very Happy
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Post  RknRusty Fri Sep 26, 2014 10:50 am

An OS 6,7, or 8 usually has the number stamped on one of the the faces of the hex nut. You can probably walk into any hobby shop, even Hobbytown USA and get those plugs. They're very popular plugs these days. If they don't have a 6, get a 7 or 8. Ebay will have dozens, look for free or cheap shipping. I like eBay's Omnimodels. You can go straight to Omnimodels.com too. Or Merlin or OS.
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Post  Kim Fri Sep 26, 2014 11:27 am

Well heck, if you get totally stuck, let me know and I'll get a couple of those suckers and mail 'm to you!

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Post  getback Fri Sep 26, 2014 11:53 am

Thanks again Rusty Orded. 4 for 18.67 be here next of never ssssslow boat from HK. good price though and i need some Very Happy Eric Very Happy
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Post  Oldenginerod Fri Sep 26, 2014 5:05 pm

The HSP plugs from China (think they're made in Taiwan) are cheap & plentiful. Has anyone had any experience with them? If I could afford them, I'd use Enya plugs in everything. I still get a little confused about what uses long & what uses short plugs.

Rod.
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Post  getback Sat Sep 27, 2014 7:59 am

Rod , if you measure the thread depth or just look at it is the way i determine short or long by the depth , You are right it is a pain when you have a lot of difft. engines , but thankfully we have alot of resources on this forum . I don't no about the HSP plugs , But check this out scroll down the page were it says plug exchange , I didn't quite understand were is it 1 for 1 or what??? http://www.enya-engine.com/plug_E.html Eric Very Happy
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Post  Cribbs74 Sat Sep 27, 2014 1:11 pm

Eric,

That site appears to be Japanese. Basically you have to send in a number of old plugs to achieve enough points to warrant a new one. The points needed vary for the type of plug. The other caveat is they only accept Enya plugs.

Anyway, considering the price for a new plug compared to shipping a few old ones to Japan then it would be cheaper to buy a new one in the US.

Unless you have a gallon jar full of old Enya glow plugs somewhere.
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Post  gcb Sat Sep 27, 2014 6:40 pm

@Oldenginerod wrote: ...I still get a little confused about what uses long & what uses short plugs.

Rod.

Rod,

Generally anything smaller than .15 uses a short plug and anything larger than a .15 uses a long plug. I generally use a short plug in a .15 but have, on occasion, used a long. Those intermediate plugs work well on .15's.

In all cases, turn the engine over a few times to make sure you have clearance.

George
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Post  gcb Sat Sep 27, 2014 7:31 pm

@getback wrote:I 've got one of these that has taken me a month to get loosened up , Its not a wasp , but came with no plug and cant find a refrance , I am wanting to run it, the rubber for the head gasket is in fair shape but would like to replace it also ...... if anyone can help Thanks Eric...

Are you sure that gasket is rubber? I believe they used thin gasket material, although I haven't had one apart for years.

A little tourist info from what I have read: Bob Holland and Bill Atwood made the Wasp. They eventually went separate ways. Per their agreement both were allowed to continue making the engine. I believe initially it was the same engine but one said Wasp, the other said Atwood. Each made improvements, one being the Atwood Shriek, the other was the Holland Hornet. The Hornet had a different crankcase so it was easily identified...and it was a screamer (for the day). The Shriek on the other hand looked a lot like the previous Atwoods except it used a glow head instead of the standard plug. I believe that is the one MECOA makes. It may have used improved porting, I'm not sure.

George
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Post  Mark Boesen Sun Sep 28, 2014 12:24 am

hey everybody,

I think the gasket is known as a "fiber" gasket, almost like the grey gasket material used on carbs.
Bob Holland added a small "H" to his Wasp. The Shriek wasn't much different then the Wasp, biggest difference was the "glowhead", like what Roy Cox figured out couple years prior.
Has MECOA has ever actually had these available? I remember when they first announced them, years later they still were not available?
Atwood 049 Plug ?? Ad20wa10
Atwood 049 Plug ?? Pictur12
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Post  Ken Cook Sun Sep 28, 2014 5:43 am

Mark, everything Randy says he's going to provide has never come available. While it's fortunate to have him, I can't understand why one would even list the items let alone buy the trademark rights if your never going to do anything with it. This has been going on for some 20+ years now. Ken
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Post  gcb Sun Oct 05, 2014 5:12 pm

I got a Shriek from MECOA when they were first advertised. An enclosed note said that the engine was assembled completely with original parts. Wish I had gotten a couple.

I believe part of the problem is that we buy foreign to either save a few bucks or for performance. Who in their right mind would risk money to produce a bunch of old engines when the trend is to buy new cheap or performance engines. How many would ACTUALLY pay double for an old design? A few of us would but is that enough to make a run of them?  

Here is a pic of a few. The upper right is a Shriek, middle right is a Holland Hornet (purchased in 1961). I believe the center engine is an Atwood just before the Shriek.

Atwood 049 Plug ?? Atwood10

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