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Old 05-18-2019, 04:21 PM   #1
JayRec
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Need help identifying these engines


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I just got these gas engines from an estate. They have Walbro carbs
They were serviced and then stored in plastic bags. Do they have any value?
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Old 05-18-2019, 10:08 PM   #2
R Plante
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Re: Need help identifying these engines

The one on the left looks like a ryobi weedeater conversion... next one going by the orange case is probably an old A&M Sachs based engine
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Old 05-21-2019, 07:28 PM   #3
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Re: Need help identifying these engines

To me they all look to be chainsaw/weed whip conversions. As for value - if they are in good condition, if they put out a reasonable amount of power for thier weight and displacement then the only value would be found in using them yourself. I would not expect to get very much for them on the market due to the glut of proven brand name engines out there.

Not all conversions were successful especially the grass whip ones. They often are rpm limited by port size and timing and will not turn a prop at a high enough rpm to fly a plane.
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Old 05-21-2019, 07:38 PM   #4
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Re: Need help identifying these engines

Thanks for the insight Mervin.
I took them to the flying field the other day and your right all are chainsaw/weedwacker conversions one of them actually was converted by one of the guys there, they said it ran well and i may use it in a Balsa USA Citabria Pro after I ditch the magneto and flywheel for CDI. Still reading up on how to do that.
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Old 05-21-2019, 11:01 PM   #5
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Re: Need help identifying these engines

I converted a Kioritz weed eater engine that would not rev above 6700 rpm unless it had a 4" pitch prop on it. Then it would only hit about 7300 rpm and with a 4" pitch, would lift the plane off the ground but was flying just on the ragged edge of a stall. A 6" pitch would drop the rpm to 6700 and the plane would not lift off. The engine looked a lot like the one on the right in your first photo.
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Old 05-22-2019, 07:31 AM   #6
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Re: Need help identifying these engines

For the learning experience and the challenge I can totally see trying to get one running ,I've done many myself and it's a lot of fun and quite rewarding when you get a good runner .. In a straight value sense I think it would be cheaper to purchase a good used engine, conversions can get quite expensive in time and money, and like Merv said you may end up with nothing you can use . When gas engines fist came out they were very expensive and that made conversions quite popular ,one could even argue that conversions actually started the whole gas engine thing ,but now with the flood of inexpensive good running engines conversions are more for the guy that wants to take on a challenge for the learning experience ..
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Old 05-22-2019, 05:30 PM   #7
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Re: Need help identifying these engines

Agreed except for the expense part. If you have access to a lathe and a small engine repair shop junk pile, time will be your biggest cost. 90% of chain saws and weed eaters are thrown out for reasons other than the condition of the engine. I have even picked up several good running ones at the dump!
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Old 05-23-2019, 07:57 AM   #8
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Re: Need help identifying these engines

I just meant as he was talking about converting to electronic ignition , he would be into it for $100 just for the ignition and still have a unknown outcome .but I agree he could just run it the way it is for nothing , can't beat that .
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Old 05-23-2019, 08:06 AM   #9
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Re: Need help identifying these engines

The Armature coil on these is placed in a position to keep RPM in a certain zone for the desired load (nylon line). You need to bypass this ignition system with an aftermarket one to have a variable ignition timing to get the desirable RPM with a useable prop. As you will find out, with the current ignition timing, the engine will put out mediocre power within a governed maximum.
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Old 05-23-2019, 11:08 AM   #10
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Re: Need help identifying these engines

I totally agree James , That's why I mentioned it's hardly worth while in a value sense, unless you want the challenge . My first dla 56 was picked up for $160 new . IMO conversions hardly make sense anymore . Maybe in a WW1 that needs little power and a ton of nose weight . I think it makes more sense to put $150-$300 into something you know will do the job rather then $100 into something that may not, but if your just doing it for fun , have at it . .
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