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Author Topic: Jin Engine's new owners thread  (Read 1524 times)

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Jin Engine's new owners thread
« on: July 19, 2020, 04:57:22 pm »
While I'm impatiently waiting for my m94 from China, Please share your experiences & advice.
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Re: Jin Engine's new owners thread
« Reply #1 on: July 20, 2020, 11:29:20 am »
Have bought a half dozen engines from jin. Only 1 problem and he sent a replacement part immediately. Shipping time from china is what it is. It usually takes a week to 10 days once it is shipped
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Re: Jin Engine's new owners thread
« Reply #2 on: July 20, 2020, 02:13:45 pm »
Bonjour,
I share my experience with Jin products I bought on my YouTube channel research word "Microcosm". I have steam and gasoline engines, Jin is always very reactive if I have a problem (uncommon hopefully).
My concernis that I have to be patient when I order...
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Re: Jin Engine's new owners thread
« Reply #3 on: July 20, 2020, 03:42:40 pm »
I purchased a quart of Marvin's mystery oil, and a can of zippo lighter fluid.
Should I buy CRC or wd-40 branded ptfe dry spray lubricant?
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Re: Jin Engine's new owners thread
« Reply #4 on: July 20, 2020, 04:42:47 pm »
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Re: Jin Engine's new owners thread
« Reply #5 on: July 23, 2020, 05:52:49 am »
Hi Partcleman,...the Mmo @ 20:1 or 5% fuel mix is a favorite...traditional wet ptfe lubes like 3-IN-One, Super Lube ptfe iso 100 & WD-40 Spray & Stay Gel lube on cylinder wall, piston wrist pin & bearings and "fling off" gear & sliding parts respectively  work good for me. I just haven't tried the dry spray lubes yet to comment....tom.
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Re: Jin Engine's new owners thread
« Reply #6 on: July 23, 2020, 10:55:29 am »
Do these come with pre lubricated cylinder walls?
If not I think the first thing I should do is pull the piston.
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Re: Jin Engine's new owners thread
« Reply #7 on: July 23, 2020, 12:33:32 pm »
Hi Partcleman,

2 drops of silicone friendly oil in the carb before first start and oil the small end and inside of the bore with the piston at TDC and that will be fine,  no need to strip it.  (they are lubed from the factory).

Of course it is always fun to see what is inside  ;D but run it first in case it is faulty and you have to return it IMHO

Best wishes
Ade
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Re: Jin Engine's new owners thread
« Reply #8 on: July 23, 2020, 01:18:09 pm »
Good advice.  On making sure it runs before any disassembly.
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Re: Jin Engine's new owners thread
« Reply #9 on: July 26, 2020, 04:35:03 am »
Hi Partcleman,...my M90 arrived without evidence of any factory lube. Very clean, precision fabricated & assembled but very dry & as per instruction sheet,.. battery & pure fuel up & go for it crank up !.....Unlike the century old reliable full size h&m workhorse engines it's patterned from, strangely there's no factory provided, replica piston-cylinder or crank bearing lube holes & regardless of excessive flingoff, i suspect the engine runs functionality dryer more times than operator realized....tom.
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Re: Jin Engine's new owners thread
« Reply #10 on: August 03, 2020, 08:17:45 pm »
Yay my new engine arrived!  I noticed in a lot of videos the base gets quite dirty.  So the first thing I did was removed the engine and finished the base. Now any oil that gets on it won't soak in.  Last night I remounted the engine and played with it for about 4 hours.  Wow I had so much fun but.. I may have over did it.  I was leaning over the engine most of the time and although I had my garage windows open  I started to feel a little sick from the exhaust. Next run I will have a fan pointed at me.  Also my arm was sore this morning from starting it so many times.  That's all for now I'm going to play 😁

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Re: Jin Engine's new owners thread
« Reply #11 on: August 04, 2020, 02:52:55 am »
They are great fun and it sounds like you are really enjoying it :D
All the best
Ade
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Re: Jin Engine's new owners thread
« Reply #12 on: August 05, 2020, 01:54:20 pm »
We all know the boxes these are mounted to are flimsy.  Especially the top piece where the engine mounts.  I feel like over time it could break.  My solution was to glue 1/4" plywood onto the top piece from the inside of the box. I had to route out the new piece a little for the ignition box. I replaced the mounting screws with longer ones. I Also used some dense foam as a bettery holder. Cheers
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Re: Jin Engine's new owners thread
« Reply #13 on: August 05, 2020, 02:14:04 pm »
pics
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Re: Jin Engine's new owners thread
« Reply #14 on: August 05, 2020, 02:52:17 pm »
Accident or design the engine is level upside down :D
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