Diesels In Super Garden Tractors

[cubcadet128]

I have had an ongoing idea of finding a gas super garden tractor somewhere and putting a diesel engine in it. I was looking around on youtube at the different makes of diesels like kubota and yanmar but one kind of caught my eye. I was wondering if anyone has ever seen or would possibly have a picture of a super garden tractor with a 1.6 l VW Turbo Diesel in it.

[Sam Mac]

Sounds like a cool project. Just one thing to consider, the hydro won't be able to use that much power and it will just bypass

[CADplans]

Originally Posted by Sam Mac

Sounds like a cool project. Just one thing to consider, the hydro won't be able to use that much power and it will just bypass

I don't know about that Sam. Yes at some point in the circuit there is a bypass, but, there is too much of a chance that bypass will not occur and parts will "twist".

I have had at least 8 hydro Cub Cadets. In each case they will stall the engine rather than "bypass" at maximum torque.

The bypass valves may only be for the charge circuit, rather than the drive circuit.

I know the tractor will stall at low machine speed, but I thought that was due to "pump leakage or cavitation" rather than lifting a bypass valve.

Question - Has anybody had a hydrostatic transmission "bypass" rather than stall the engine at high machine ground speed?

[Sam Mac]

Just spent a little more time looking at the Sundstrand design for the 15U and I was wrong. They do not have a high pressure relief on the 15U series, I’m used to the larger stuff like I used to have on my concrete trucks that do have a high pressure relief, so as Cad said you would twist something with enough power.

[fourinchdragslicks]

I thought the supers ran a different hydropump than the gt

[Sam Mac]

Originally Posted by fourinchdragslicks

I thought the supers ran a different hydropump than the gt

Same pump but different output shaft and reduction gear.

[fourinchdragslicks]

got it, thanks for the clarification

[rdmanone]

I was thinking about putting a diesel in my tractor. I have a 3 cylinder Mits diesel that came out of a Toro lawn tractor. It puts out about 20hp. Thought that would be a good project.

[restore49]

Would the gear ratio for a GAS work with the Diesel ?? Is the diesel top rpm lower than 3600 rpm?

[Sam Mac]

Originally Posted by restore49

Would the gear ratio for a GAS work with the Diesel ?? Is the diesel top rpm lower than 3600 rpm?

Gearing is the same.

RPM depends on what engine you are talking about.