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Author Topic: Jim's Hit & Miss Engine M92  (Read 568 times)

Jim

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Jim's Hit & Miss Engine M92
« on: October 15, 2020, 09:20:32 pm »
Jim's Hit & Miss Engine M92

Having a lot of fun with this engine since getting it yesterday.

How's it running?



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Jim

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JinMachine

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Re: Jim's Hit & Miss Engine M92
« Reply #1 on: October 15, 2020, 10:47:19 pm »
LOOKS good!Jin
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Raphael

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Re: Jim's Hit & Miss Engine M92
« Reply #2 on: October 16, 2020, 01:04:35 am »
Bonjour Jim,
Very interesting video, your one seems to run perfectly with Zippo fuel when mine is awfully capricious with unleaded 98. I will try with your fuel.
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Jim

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Re: Jim's Hit & Miss Engine M92
« Reply #3 on: October 16, 2020, 01:08:18 am »
Quote from: Raphael on October 16, 2020, 01:04:35 am
Bonjour Jim,
Very interesting video, your one seems to run perfectly with Zippo gas when mine is awfully capricious with Uneaded 98. I will try with your gas.

Raphael, I have read of your woes and frustrations. I would try some Zippo lighter fuel and see if that remedies the troubles that you have had.
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Jim

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Raphael

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Re: Jim's Hit & Miss Engine M92
« Reply #4 on: October 16, 2020, 01:17:28 am »
Bonjour Jim,
Be sure I will try Zippo fuel as your experience is quite positive. I like sharing my experience to help people who could live the ssame situation, that means  I sometimes share mys frustration.
Then people like you and also Jin come to help me and generally, I finally succeed.
Did you check the spark plug ? Did you modify / check the needle screw adjustment before its first start ? 
 
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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
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Jim

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Re: Jim's Hit & Miss Engine M92
« Reply #5 on: October 16, 2020, 01:29:18 am »
Raphael, I haven't touched the spark plug or carburetor needle. Its as it came out of the box.

I'll have to read a bit more about the carburetor needle until I'm game to touch it.
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Jim

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Raphael

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Re: Jim's Hit & Miss Engine M92
« Reply #6 on: October 16, 2020, 06:25:46 am »
Bonjour Jim,
If your engine work, ad it does well, DON'T TOUCH ANYTHING  ;)
On my side, I was suggested to use Zippo lighter fuel instead of Unleaded 98, I will do that.

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Raphaël, Membre du Modèle Yacht Club de Paris : http://mycparis.fr/
Membre de l'Offshore Club de Paris: http://site-ocparis.wifeo.com/
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Jim

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Re: Jim's Hit & Miss Engine M92
« Reply #7 on: October 16, 2020, 05:48:57 pm »
Yes presently Raphael I don't want to change anything until I know a lot more about it.

I've been reading through all the threads in this section of the forum and picking up a lot of info from other members.
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Jim

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Nick

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Re: Jim's Hit & Miss Engine M92
« Reply #8 on: October 16, 2020, 07:32:03 pm »
Looks like you got a good runner there  8)

I don’t have this model, and your videos definitely making me want to change that!!
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Nick

Jim

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Re: Jim's Hit & Miss Engine M92
« Reply #9 on: October 16, 2020, 08:41:42 pm »
Quote from: Nick on October 16, 2020, 07:32:03 pm
Looks like you got a good runner there  8)

I don’t have this model, and your videos definitely making me want to change that!!

LOL....I'm well pleased to be able to return the favour :)
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Jim

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Jim

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Re: Jim's Hit & Miss Engine M92
« Reply #10 on: October 17, 2020, 04:52:08 pm »
How many hours do you all think these are good for? Is the easily replaceable 'O' ring the thing that cops the wear and tear?

How many hours have you logged?

Spare spark plug a good idea to have on hand?
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Jim

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Stoker

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Re: Jim's Hit & Miss Engine M92
« Reply #11 on: October 17, 2020, 06:43:19 pm »
Hard to say how long the O-rings may last. It seems to be the consensus that only one is needed, so you automatically have a spare right there.

I have broken a spark plug myself, which I found to be very easy to do by mis-aligning a slightly oversize long socket, and putting a little torque on it. They are rather delicate me thinks!!!

Properly handled, they'll probably last a lifetime though, I just screwed up!

Still, it probably is best to have a spare around, just as a bit of Murphy prevention if nothing else!??!  ;c)
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RedRyder

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Re: Jim's Hit & Miss Engine M92
« Reply #12 on: October 17, 2020, 09:12:20 pm »
Hi Jim, we just got back from 4 days at the Coolspring Power museum.


Regarding your too much oil question.... You do not have too much. Oil should pass through the engine. As long as you are using a naphtha based fuel and plenty of oil, the O-ring will last a long time. Since I started mixing fuel a bit rich with oil, I have not yet needed to replace an O-ring.


To get the oil away from the engine, I bored a hole straight through the front of the muffler and plugged all 4 holes.
Or... you could replace the muffler with a short straight brass tube about 1-1 1/4" long.
Wither way the engine will stay a lot cleaner.


Enjoy!


Gil
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Nick

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Re: Jim's Hit & Miss Engine M92
« Reply #13 on: October 17, 2020, 09:22:33 pm »
Quote from: RedRyder on October 17, 2020, 09:12:20 pm
To get the oil away from the engine, I bored a hole straight through the front of the muffler and plugged all 4 holes.

And now you have a clean engine, but oil spray all over your shirt  ;)  :D
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Nick

classixs

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Re: Jim's Hit & Miss Engine M92
« Reply #14 on: October 18, 2020, 02:22:14 am »
I admittedly don´t own a M92, but my M90 have not seen a single drop of oil/lubricant in the fuel, and after more than 2 cans of Zippo fuel, i have noticed absolutely no difference in running characteristics or output.
Since the engine runs quite cool and wet from fuel on its own, and the pistonrings are made of rubber/nitrile, little to no wear is expected in the cylinder.
Personally i prefer this to avoid any chance of gum forming during longer storage, over the slight inconvenience of having to change a very cheap rubber-ring...which by the way will decay and stiffen up over time on its own anyway, nomatter if its greased up by the fuel or not.
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Jan
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