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Engine in Dad's 125 croaked!


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#1 skyrydr2 ONLINE  

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Posted May 22, 2016 - 01:38 PM

Well the engine went south...smokes like an o)d Detroit diesel on start up... And had no power at all... Anyways, he wi ed and cried about it so bad we gave in..( me and my younger brother PJ) he donated the engine and i the time and brain power.... Lets nust say this wasn't for the week or timmid!!
Stuffing a 18hp Magnum into something not intended to use this beast was not easy, at first anyways...
You need to modify the frame for starter clearance first and remove the engine mount tabs. Then you can get it to set in enough to line up the driveshaft.
The doner tractor was a craftsman gt6000 and it has everything needed to make this work.
This takes a bunch of mocking up to get the placement correct but in the end it works out great.
You need to cut down the engine plate to fit in the frame nicely so it can be welded in later. I used 1/2" plywood for a spacer between the front axle mount and engine plate and welded it in. No isolation mounts needed these engines run nice and smooth.
If you need a rear pto then forget this option as it aint gonna happen!!!
Tin side covers need to be trimmed at the bottom to fit. And the mule drive moved forward about an inch and a half so it reaires 2 spacers for the cross bar and a 3" longer belt to run the deck.
Exaust is also going to be outside the tin. Mounted out infront. Should keep the engine compartment nice nice this way, as my dad mows for hours at a time.
Pics coming...

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Edited by skyrydr2, May 22, 2016 - 05:15 PM.

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#2 Delmar OFFLINE  

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Posted May 22, 2016 - 03:09 PM

Sounds like you got this under control. Nice job on the repower! That 18 HP magnum ought to do the job.
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#3 skyrydr2 ONLINE  

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Posted May 22, 2016 - 05:37 PM

Im not sure what was heavier, the k engine or the m? But boy they both are heavy!! As soon as i get the flywheel fixed ill get some pics with the engine installed.
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#4 skyrydr2 ONLINE  

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Posted May 23, 2016 - 04:17 AM

For all the folks out there that do engine swaps only to find you can't shut the rig off because you go from a B+ ignition coil to a magneto style, I will show you just how silly simple it is to fix this issue. And if your doner Tractor is a Craftsman 6000 like mine was, it has all the parts needed.
You will need 4 female blade terminals, and one 5 pole relay ( normal open/ normally closed)
Some black 16 gage wire and one ring terminal sized to what ever ground stud youe unit has.
Crimp a blade teriminal to your old ignition wire and install it on terminal 86 of the relay.
Next install grounding wire from ignition magneto to terminal 87a .
Now you need to make a short jumper ( strip wire 2" down from end 5/8" section of jacket removed fold in half and install in terminal)
Install one end ( double wire) to terminal 30 on relay and the short end to terminal 85 .
Lastly crimp on ring terminal on this black wire and install on your ground stud. Easy peasy!!!

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Edited by skyrydr2, May 23, 2016 - 05:22 AM.

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#5 KennyP ONLINE  

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Posted May 23, 2016 - 05:49 AM

So the relay would be normally closed without power to it?



#6 skyrydr2 ONLINE  

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Posted May 23, 2016 - 05:59 AM

Yes , so when you kill power with the key, it closes and grounds the mag.
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#7 toppop52 ONLINE  

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Posted May 23, 2016 - 09:27 AM

Would it have been easier to fix up the GT6000? :D

 

Nice work, I love engine swaps!



#8 skyrydr2 ONLINE  

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Posted May 23, 2016 - 10:41 AM

No, Ford has hydro, hydraulics, and 3 point hitch as well as a mowing deck that mows perfect. The craftsman has nothing but the engine LOL. Doesnt even have a cast front axle....
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#9 WoodyChuck OFFLINE  

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Posted May 23, 2016 - 12:28 PM

I got an old 1200 cub that smoked real bad with no power I picked up for free. I adjusted the carb and it runs good now the carb could really use a rebuild but I just haven't gotten to it

#10 skyrydr2 ONLINE  

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Posted May 24, 2016 - 05:29 AM

The 12 hp engine is whipped ,it burns more oil than gas...

#11 skyrydr2 ONLINE  

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Posted May 25, 2016 - 03:02 AM

OK here is the M18 installed. Dad worked all day on his exhaust, he wanted it outside the sheet metal. It came out really nice this way, and should keep out dang near all the heat.

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#12 KennyP ONLINE  

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Posted May 25, 2016 - 05:05 AM

That looks real good in there! Did you get it charging?

I'm very happy with the M18 in Alice!



#13 skyrydr2 ONLINE  

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Posted May 25, 2016 - 06:47 PM

Didn't even have to trim side panels

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#14 skyrydr2 ONLINE  

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Posted May 26, 2016 - 03:26 AM

Well pops loves that Tractor now!!! He mowed the entire farm with it yesterday, stopped for lunch and charged the battery( yeah never got it charge correctly yet) and finished about 5 pm. He said it has more power than imaginable. I was laughing at him, he was like a kid with a new toy.
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#15 skyrydr2 ONLINE  

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Posted May 29, 2016 - 06:06 PM

Drove dads lgt today with the m18 engine WOW!!!!!! What a powerhouse!! And man is it smooth holly smooth!! That is a match made in heaven!!! If i showed you what i was pulling around you would say i was nuts, but it handled it as good as the 8n does! Now i see why he was all giddy after he mowed his lawn with it, its a sweetheart!
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