Bobcat MT55 needs engine or rebuild

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tttahoe1

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Nov 4, 2009
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Team, Long time. Hope everyone is well. I just acquired a new project: An MT55 with a boo boo'd motor. The Kubota D902 spun the bearing on the rear main. After making a few calls - I think the most cost effective route will be to rebuild the engine (as long as the rear main journal on the crank cleans up OK at the machine shop). If the crank won't clean up correctly - I'll have to do some thinking as a new crank from Bobcat is over $800 once you include tax. Ouch!!! I must be getting really old - I seem to remember high performance rebuild kits for small block Chevy's costing less than that - for the WHOLE KIT! A reman unit from Bobcat is $3,456 plus tax. Actually not a bad warranty: 1 year with unlimited hours. If I was using the machine all the time - the unlimited hours would be of substantial interest. I only have a couple of projects to knock out and the machine will probably go up for sale. Any thoughts on a different series engine? Maybe a D1100? (made up the number). I have no idea what or - if - there is a different series that would allow everything to bolt up/on. You guys always have great ideas and input. Look forward to anything you have time to post. Thanks, Jim
 
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tttahoe1

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Nov 4, 2009
Messages
61
Thank you Sir!! I will call tomorrow.
Old Machinist, I keep missing 902s that are for sale. Plus, I'm thinking of just biting the proverbial bullet and starting fresh. This D902 I've got pushed a lot of bearing material thru the oil system before it was shut down. The cam journals on the cam don't look so good. The 902 block does not have cam bearings. Any history on boring a non-cam bearing block large enough to accept bearings? Local machine shop (very good reputation ) said they would sleeve the cylinders but told me I was on moon dust on the idea of machining in cam bearings. Your advice is always valued. Thank you, Jim
 

antfarmer2

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Oct 28, 2013
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2,801
Old Machinist, I keep missing 902s that are for sale. Plus, I'm thinking of just biting the proverbial bullet and starting fresh. This D902 I've got pushed a lot of bearing material thru the oil system before it was shut down. The cam journals on the cam don't look so good. The 902 block does not have cam bearings. Any history on boring a non-cam bearing block large enough to accept bearings? Local machine shop (very good reputation ) said they would sleeve the cylinders but told me I was on moon dust on the idea of machining in cam bearings. Your advice is always valued. Thank you, Jim
Ouch found a drop in rebuild on ebay 3,500 + 800 core
 

Tazza

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Dec 7, 2004
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16,829
Team, Anyone know if a D905 will fit in the place of the D902 I need to replace? I know zero about Kubota compatibility. Hope y'all are great. Thanks, Jim
I believe it would bolt right up. The only difference is the D905 is newer.
 

Tazza

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Dec 7, 2004
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Tazza, as always- thank you for the help.
*fingers crossed* that i am 100% right on that :)
That is the good thing with Kubota, most models have the same block size, the internals are the only difference.
 
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