g4200 engine into b5100d
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North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Right off the top,
Killer is the oil pan on the G4200 is deeper and that will lead to a clearance issue with the front axle, might fit, might not, you will need to verify clearance!
Second would be the throttle and stop linkage is completely different, but that might be workable.
Main concern would be fly wheel, looks like the B5100 might bolt up to the G4200, but you would have to confirm.
Killer is the oil pan on the G4200 is deeper and that will lead to a clearance issue with the front axle, might fit, might not, you will need to verify clearance!
Second would be the throttle and stop linkage is completely different, but that might be workable.
Main concern would be fly wheel, looks like the B5100 might bolt up to the G4200, but you would have to confirm.
North Idaho Wolfman
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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
if the pans have the same bolt pattern (probably) and the pick up tubes can be swapped (maybe, about 50/50) and the dipstick is the same (again maybe) then it will work.
Yes the mounts are, or appear to be the same.
Yes the mounts are, or appear to be the same.
They are asking 800.00 for this g4200, which is outside the cost to rebuild my motor, unless I need a full on rebuild. But if I could get it for 500 (doesent have a mowing deck so basically a yard ornament) I getting into the range where a swap would be reasonable. All of this is off the reservation, so to speak.
I guess Im wondering why Kubota would even make 2 different 12 hp motors in the same model years..
I find my b5100 very useful but it leaks oil out the exhaust manfold and blows blue smoke under any kind of load. It has 2100 hrs on the meter, but obviously needs some attention. So sending the head out for r&r, buying gaskets and maybe a couple of pistons, it starts to add up parts wise.
Thanks for the info-- sounds like it might not be worth the risk. I suppose Im better off rebuilding what I have rather than starting over. God knows, lawn mowers get rode pretty hard, so the g4200 could easily be just a worn out.
I guess Im wondering why Kubota would even make 2 different 12 hp motors in the same model years..
I find my b5100 very useful but it leaks oil out the exhaust manfold and blows blue smoke under any kind of load. It has 2100 hrs on the meter, but obviously needs some attention. So sending the head out for r&r, buying gaskets and maybe a couple of pistons, it starts to add up parts wise.
Thanks for the info-- sounds like it might not be worth the risk. I suppose Im better off rebuilding what I have rather than starting over. God knows, lawn mowers get rode pretty hard, so the g4200 could easily be just a worn out.
Kubota is and continues to be mainly a engine manufacturer. The other items that they build and market just go to support this main endeavor.
Being that there main business model is this, Kubota may make a hundred different variations, or "spec" models in a given year of "the same" 12hp engine, to fit a hundred different applications of the needed 12hp engine size.
In addition, it is easy for Kubota to run off a certain production run of the same basic block casting, but machined differently, which would then be accessorized with specific parts to meet a particular need, or spec.
Which means that there is a lot of interchangeability, some of the differences may be minor such as a specific fuel setting, but also a lot of non interchangeability between engine types due to basic machining differences. The only way to know for sure is to compare ALL of the engine specification numbers to what you are interchanging. If ALL of the engine specification numbers are the same, then it is a direct interchange, if not it is a crap shoot.
All of the engine spec number are more than say a D903, they would be the D903, followed or proceeded by all of the prefixes or additions to the basic number.
David
North Idaho Wolfman
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Staff member
Lifetime Member
Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
In this situation that's not the case.
The B5100 Z500 was made 1978 to 1984
The G4200 Z483 was made 1984 to 1990