12-21-2022 - TODAY A CUSTOMER WITH A MDJF BLOCK CAME AND COMPARED HIS BLOCK SIDE BY SIDE TO MY BLOCK AND WE CAME TO THE CONCLUSION THAT THESE ARE THE SAME BLOCKS. (Minus a plug here and there)
And my RDJF block has on one end mounting holes tapped for a water pump.


RDJF ENGINE BLOCK
110-1699 ONAN 4 CYLINDER ENGINE BLOCK

CASTING NUMBER ON BLOCK IS 170-2722

CYLINDER BORE IS 3.5"
BLOCK IS 21.375" OVERALL LENGTH

ATTENTION PLEASE:

These 110-1699 block got wet while in storage before I purchased them.  I have cleaned off some surface rust.  There may be a small amount of pitting that may take a bit more work to get to 100%.  A wire wheel on an angle grinder was used.
I have oiled the blocks down after my cleaning.   Please ask for more details if necessary.


NOS

new old stock

 

 Other countries must contact me for a postage quote.

I am not an expert concerning much of what I sell.   Please send Onan part numbers when inquiring about certain parts or the Onan model and spec #.

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....

Cheers, Mike


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11-3-21