I have a 2021 John Deere z355e with a 22hp B&S engine.
I’m wanting to buy the 27hp v twin B&S engine, and I want to know if it will increase the cutting power as my zero turn for better cutting in taller grass?.
seems to run the deck off the revs to the wheels and cutting deck and not separately if that makes sense lol. The engine would fit perfectly just unsure if it will allow me to do more commercial mowing by giving better performance/Torque to the deck.
The makers of the lawn mower will have designed the blades to run at a specific tip speed. As you will know, the mower is designed to be driven at max throttle to run at the chosen blade tip speed.
Since HP = TORQUE X REVS, you need to identify whether the bigger engine is getting its increased HP from a higher torque or higher Revs. You will need more torque, not more revs.
With higher torque the machine should be able to drive up steeper slopes and not slow down in thicker grass (not sure if longer grass is relevant since it has a maximum height for the cutters).
Whether the belt drive to the wheels and blades is capable of handling the extra torque is something you may just need to experience, or even ask the manufacturer.
