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Reload this Page 782 Onan Engine swap - need some advice for the driveline
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  #11  
Old 12-01-2018, 11:51 PM
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What's the serial # on it? Looks just like mine. I'd say the hood on yours is a little nicer actually. Mine is a dual hydro/ series 1 as well.
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  #12  
Old 12-02-2018, 12:24 AM
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Originally Posted by SS5150 View Post
What's the serial # on it? Looks just like mine. I'd say the hood on yours is a little nicer actually. Mine is a dual hydro/ series 1 as well.
This is one of the few original 82 series I've seen with a hood that has no surface rust. My 1811 hood had surface rust all over it. I guess this one was stored inside its whole life.

The serial number is 825870.
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-1984 CUB CADET 782 w/ONAN P218G Engine, Power Steering, Dual Brake Pedals, 3-Point Hitch
-1987 CUB CADET 2072 w/FACTORY ONAN B48G Engine, 50" Mower Deck, 3-Point Hitch

-PAST: '73 CUB CADET 86, '74 CUB CADET 129, '74 CUB CADET 169, '80 CUB CADET 782, '84 CUB CADET 882 DIESEL, '88 CUB CADET 1811, '89 CUB CADET 2072, '04 CUB CADET LT1024, '05 CUB CADET SLT1554, '09 CUB CADET GT2550
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  #13  
Old 12-02-2018, 08:55 AM
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The Onan to M18 swap isn’t exactly plug n play. I did it in my 1912. It bolts right in perfectly, but you have to wire a relay for the ignition because you’re going from points (needing power to run) to magneto (needing ground to turn off the engine).

You would need this for any swap from onan to an engine that doesn’t have points.
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  #14  
Old 12-02-2018, 09:09 AM
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Originally Posted by MichaelTJD60 View Post
..................

Is that adapter you speak of for installing a Super Cyclops-style CV driveshaft? If I decide to keep the original straight shaft, I was planning to replace all 4 rag joints anyway.

.............
I make adapters and also couplers. Here's some of them on page two of my parts threads
https://www.onlycubcadets.net/forum/...t=20875&page=2

You can also get there by clicking "Parts by Jeff" at the top of the page.

Jeff
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  #15  
Old 12-02-2018, 10:05 AM
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I love Onan's too!

Gary's Place is pretty hard to beat on prices for Pistons, rings, rods, gaskets and seals.
DSCN2204.jpg DSCN2216.jpg

I think it would be easier changing the oil pan and using a new starter.

I had to switch the rear bearing plate(front of engine) so I could use the original 982 pto also. The one on the left is from a 982 and the one on the right was from a Grasshopper mounted pto.
DSCN2098.jpg
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  #16  
Old 12-02-2018, 10:31 AM
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Nice looking 782, did the rod ventilate the block?
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  #17  
Old 12-02-2018, 02:50 PM
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Originally Posted by sorner View Post
The Onan to M18 swap isn’t exactly plug n play. I did it in my 1912. It bolts right in perfectly, but you have to wire a relay for the ignition because you’re going from points (needing power to run) to magneto (needing ground to turn off the engine).

You would need this for any swap from onan to an engine that doesn’t have points.
The P218G engine has mag ignition just like the Magnum 18, so I'll have to run a magneto kill wire anyway. It's different than the B48G with points.

Quote:
Originally Posted by Jeff in Pa View Post
I make adapters and also couplers. Here's some of them on page two of my parts threads
https://www.onlycubcadets.net/forum/...t=20875&page=2

You can also get there by clicking "Parts by Jeff" at the top of the page.

Jeff
Thanks Jeff! Once I get the KT17 pulled out and do some measuring, I'll know who to go to for the driveline parts I need.

Quote:
Originally Posted by Oak View Post
I love Onan's too!

Gary's Place is pretty hard to beat on prices for Pistons, rings, rods, gaskets and seals.
Attachment 97045 Attachment 97046

I think it would be easier changing the oil pan and using a new starter.

I had to switch the rear bearing plate(front of engine) so I could use the original 982 pto also. The one on the left is from a 982 and the one on the right was from a Grasshopper mounted pto.
Attachment 97047
Gary sells some good stuff. I also buy from Boomer's Onan Parts occasionally. Changing out the bearing plate won't do me any good because the crankshaft is much larger on this engine than on a 982 engine, and a 982 PTO clutch won't fit. I'm going to have to use a PTO clutch from a JD 318 since that's what this engine is out of.

Quote:
Originally Posted by darkminion_17 View Post
Nice looking 782, did the rod ventilate the block?
Surprisingly, no. The engine still runs pretty good on one cylinder. It even has a new starter. But I'll be selling the starter and the adjustable-jet carburetor when I get it pulled out of the tractor.
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-1984 CUB CADET 782 w/ONAN P218G Engine, Power Steering, Dual Brake Pedals, 3-Point Hitch
-1987 CUB CADET 2072 w/FACTORY ONAN B48G Engine, 50" Mower Deck, 3-Point Hitch

-PAST: '73 CUB CADET 86, '74 CUB CADET 129, '74 CUB CADET 169, '80 CUB CADET 782, '84 CUB CADET 882 DIESEL, '88 CUB CADET 1811, '89 CUB CADET 2072, '04 CUB CADET LT1024, '05 CUB CADET SLT1554, '09 CUB CADET GT2550
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  #18  
Old 12-02-2018, 02:51 PM
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Aside from being able to use a CV driveshaft, is there any other advantage to using a Cyclops hydro pump with the splined shaft? I'm debating whether it would be worth swapping the pump with one from an 1862 or 1864. I might just be making this project more difficult than it needs to be.

Also, at some point down the road I would like to install power steering using the parts from an 1862/1864. Would I have to swap the pump for this too, or can I still use the original 782 pump?
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-1984 CUB CADET 782 w/ONAN P218G Engine, Power Steering, Dual Brake Pedals, 3-Point Hitch
-1987 CUB CADET 2072 w/FACTORY ONAN B48G Engine, 50" Mower Deck, 3-Point Hitch

-PAST: '73 CUB CADET 86, '74 CUB CADET 129, '74 CUB CADET 169, '80 CUB CADET 782, '84 CUB CADET 882 DIESEL, '88 CUB CADET 1811, '89 CUB CADET 2072, '04 CUB CADET LT1024, '05 CUB CADET SLT1554, '09 CUB CADET GT2550
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  #19  
Old 12-02-2018, 07:02 PM
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Quote:
Originally Posted by MichaelTJD60 View Post
Aside from being able to use a CV driveshaft, is there any other advantage to using a Cyclops hydro pump with the splined shaft? I'm debating whether it would be worth swapping the pump with one from an 1862 or 1864. I might just be making this project more difficult than it needs to be.

Also, at some point down the road I would like to install power steering using the parts from an 1862/1864. Would I have to swap the pump for this too, or can I still use the original 782 pump?
The 782 pump works just fine with power steering, BTDT
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  #20  
Old 12-02-2018, 07:19 PM
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MichaelTJD60 MichaelTJD60 is offline
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Originally Posted by ol'George View Post
The 782 pump works just fine with power steering, BTDT
Great to know, thanks!
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-1984 CUB CADET 782 w/ONAN P218G Engine, Power Steering, Dual Brake Pedals, 3-Point Hitch
-1987 CUB CADET 2072 w/FACTORY ONAN B48G Engine, 50" Mower Deck, 3-Point Hitch

-PAST: '73 CUB CADET 86, '74 CUB CADET 129, '74 CUB CADET 169, '80 CUB CADET 782, '84 CUB CADET 882 DIESEL, '88 CUB CADET 1811, '89 CUB CADET 2072, '04 CUB CADET LT1024, '05 CUB CADET SLT1554, '09 CUB CADET GT2550
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