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212 repower

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#1 tomgodd OFFLINE  


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Posted October 16, 2011 - 08:57 PM

I would love to repower my JD 212 with a modern more efficient engine. Anyone know anything? Jimsrepair said it can be done with a BS vanguard 18 horse twin cylinder. He did not tell me what it would required to do it. He said for him to do it would cost 2500 out the door. I would consider this if I lived in Minnesota, but I live in Kentucky. I am fairly handy with a welded. Any ideas would be great.

#2 EricFromPa ONLINE  



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Posted October 16, 2011 - 09:25 PM

My neighbor just got a 212 for parts with a worn out 10hp kohler.His block has been bored a few times.It's .030 over and the piston rings are no longer making contact with the cylinder wall.And it has a nasty rod knock.

He bought it for parts for a 112.But after going over it the 212 is in better cosmetic condition than the 112.He's considering repowering it with either a Vanguard or one of those cheap Ebay 16hp engines.DUROMAX 16 HP GAS ENGINE GO CART MOTOR LOG SPLITTER | eBay

Slight engine cradle modification may be needed and always make sure you get an engine with the correct Crank size.

#3 Trav1s ONLINE  


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Posted October 17, 2011 - 08:11 AM

From the ad:

Displacement: 420cc Bore: 90, Stroke: 66.
Max Output: 16.0 HP / 3600 RPM.
Max Torque: 28.5 Nm / 21.0 ft/lb.
Ignition Type: Transistorized Magneto
Splashing Lubricating Type System
Shaft Size: 1" Diameter, 2-3/4" Long, 1/4" Keyway,
Shaft End is Drilled and Tapped with a 3/8" 24 UNF.

Dimensions Of Unit: 20.47" Long x 18.5" Wide 22" High
Recommended Fuel Type: Gasoline - 87 Octane Rating Or Better
Shaft Dimensions & Measurements
Shaft Size: 1" Diameter, 2-3/4" Long, 1/4" Keyway,
Shaft End is 3/8" Size 24 UNF - Drilled and Tapped

Measurement from Center of Shaft to Base: 5-Inches

Looks doable but would likely take some serious measuring and fab work to get it in place. I would also expect the swap to go easier with an electric clutch than the old skool manual clutch I am familiar with on the 200 series machine.

#4 662termite467 OFFLINE  


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Posted October 17, 2011 - 09:10 AM

make sure of the crankshaft length.just measured an engine that was removed from a 212 and the length is 3.25 inches . this will throw everything out of alignment.the treaded hole in the end of the crank is also 7/16" sae fine not 3/8"

#5 Jehtro OFFLINE  



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Posted October 17, 2011 - 12:20 PM

You could always do what this guy did

Davidsfarm 0226 4xGLj6CosdM HQ john deere lawntractor motor swap - YouTube

#6 olcowhand ONLINE  


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Posted October 17, 2011 - 05:27 PM

Small Engine Warehouse says nothing they have tried works. They are heavily into this & if they say there's no easy swap, then they're likely right. Here's a link.
John Deere 212 Outdoor Power Equipment Repower from Small Engine Warehouse

#7 tomgodd OFFLINE  


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Posted October 17, 2011 - 06:37 PM

I have talked to small engine warehouse.
Jimsrepairjimstractor.com say they have done it. It requires some fabing but possible with a v twin 18 horse vanguard. Dunno. He Jim has not really given me any info on the difficulties of the repower though.