Can anyone tell me the advantages to using these covers?
Are they to keep snow out of the engine compartment when plowing or blowing?
At what temperature do they cause overheating problems?
Slowpoke Slim was right on target with his answers to your questions. And it really depends on your particular tractor and the conditions your using it in.
My smaller Kubota B2650 when used outside in sub zero temperatures could not produce enough heat to get close to normal operating temperature. If left idling outside in our cold ND sub zero temps, the gauge woould would not even register one bar. A piece of cardboard in the radiator screen wasn't enough to raise the temps either. Also, (on my B2650) the hydraulic oil cooler sits out in front of the radiator and in temperatures near -25 to -30°F even the hydraulic oil was cooling enough that I couldn't get up to rated engine rpm. Trials with different materials and blocking off the side vent areas and the full front grill area solved all the issues I was having. After some revisions and refinements the results were the covers that I now make.
My original write up on making these covers is located
here. A few others with the same issues were interested in the covers so I started offering them for sale. If they had a different model tractor, we'd work up a set of patterns for their model and add them to the list.
Larger HP tractors put out more heat and may or may not benefit from winterfronts. It all depends on their location, use, loading, outdoor temps, etc....and where the owner likes to keep his operating temperature range within when operating in those cold temps.
Some benefits of using the covers:
Quick warmups in cold outdoor temps.
Help in keeping the engine temperature where you'd like it in those cold outdoor temps.
Keeping your engine oil temperature in the correct range will boil off any accumulated condensation.
Keeps your hydraulic oil warm if the cooler sits out front of your radiator. Same for the AC if cabbed.
Better heat output from your cab heater.
Helps keep snow from being ingested into the air intake nozzle.
Helps keep your engine compartment warm....including your fuel tank if mounted under the hood!
If your engine temp starts to climb above your normal operating range...just open up a cover or remove.
The covers are easy On/Off with no tools as they're held in place with strong Neodymium magnets.
The covers sit out in front of your radiator so your fan is still drawing air through the nooks and crannies, etc. Completely blocking off the airflow directly using something in the radiator screen location may cause fan blade problems.
Again, larger HP tractors have less issues with engine heat. But (depending on your location) a huge amount of frigid air gets sucked through some of these smaller diesel engines and they just don't burn enough fuel to get or keep the engine temps up in sub freezing outdoor temps. The covers help them out!
I don't have a front mount snowblower. But some that do have experienced severe snow ingestion into their air intake nozzles in the right conditions causing the filters to clog and freeze up with snow/ice.
These covers have also helped with that issue. Here's a link to one person's
results.
As far as overheating: I'll put my covers on when the outdoor temperature starts falling below the freezing point. In the teens, I'll maybe just have the side covers on or fold open one end of the front cover to give limited access to fresh air. If you keep an eye on your temperature gauge, there's plenty of time to react and either open up or remove the front cover to drop the engine temperature. If you have a smaller tractor and operate in sub zero temperatures....you'll have to be loading your tractor engine heavy and steady to be worrying about overheating issues!
At least that's my experience while using the B2650.
Good questions, bdhsfz6. Thanks for asking and your interest!!